Earbuds / Compare

Bose QuietComfort Ultra Earbuds (2nd Gen) vs Sennheiser MOMENTUM True Wireless 4

A

Product A: Bose

QuietComfort Ultra Earbuds (2nd Gen)

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B

Product B: Sennheiser

MOMENTUM True Wireless 4

94 of 166 known

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Every value links to where we found it.

Only differences

ABose QuietComfort Ultra Earbuds (2nd Gen)

BSennheiser MOMENTUM True Wireless 4

General

6 of 8 differ

Series

QuietComfort1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Exact product heading establishes the QuietComfort family.

MOMENTUM3Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-4Read 6 October 2026Site menu Headphones by Series lists MOMENTUM Headphones. Product name MOMENTUM True Wireless 4

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

444965, 408L, 408R, 896637-0010, 896637-00304Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Manual regulatory section: charging case model 444965, earbud models 408L and 408R.14Retailer pageharveynorman.com.au/bose-quietcomfort-ultra-earbuds-2nd-gen-black.htmlRead 7 October 2026Exact second-generation Black product heading and manufacturer SKU 896637-0010. Regulatory case and earbud model numbers remain separately retained.15Retailer pageharveynorman.com.au/bose-quietcomfort-ultra-earbuds-2nd-gen-deep-plum.htmlRead 7 October 2026Exact second-generation Deep Plum product heading and manufacturer SKU 896637-0030. Regulatory case and earbud model numbers remain separately retained.

MTW4, MTW4 R, MTW4 L, MTW4 C, 700365, 700366, 700367, 700441, 7004491Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Cover and specifications: Model MTW4, MTW4 R, MTW4 L, MTW4 C. Article numbers 700365, 700366, 700367, 700441 and 700449 come from the maker's stores2Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 20263Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-4Read 6 October 2026Article No. per colour, e.g. 700367 Black Copper

GTIN / EAN

017817861120, 01781786115114Retailer pageharveynorman.com.au/bose-quietcomfort-ultra-earbuds-2nd-gen-black.htmlRead 7 October 2026Specifications Barcode (GTIN): 017817861120, exact Black SKU 896637-0010. No barcode inferred for other colours.15Retailer pageharveynorman.com.au/bose-quietcomfort-ultra-earbuds-2nd-gen-deep-plum.htmlRead 7 October 2026Specifications Barcode (GTIN): 017817861151, exact Deep Plum SKU 896637-0030. No barcode inferred for other colours.

4260752332408, 4260752332415, 4260752332422, 4260752333351, 42607523333992Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 2026Shopify product data of the EU store: EAN per colour

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

12 June 20258Press releasebose.com/pressroom/bose-announces-the-quietcomfort-ultra-earbuds-2nd-genRead 7 October 2026Dated manufacturer announcement: June 12, 2025.

8 January 20245Press releasenewsroom.sennheiser.com/sennheiser-triples-down-at-ces-24Read 6 October 2026Las Vegas, January 8th, 2024: debut at CES

Status

Available1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Selectable color, USD price and Add to Cart establish available status.

Available2Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 2026EU maker store sells all five colours with Add to Cart in October 2026. The US maker store marks the product End of Life

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Bose QuietComfort Ultra Earbuds8Press releasebose.com/pressroom/bose-announces-the-quietcomfort-ultra-earbuds-2nd-genRead 7 October 2026Like its predecessor, the QC Ultra Earbuds feature Bose's proprietary CustomTune sound calibration technology.

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Sennheiser MOMENTUM True Wireless 511Reviewwhathifi.com/headphones/wireless-earbuds/sennheisers-flagship-earbuds-are-back-to-battle-bose-and-sony-and-they-could-have-an-ace-up-their-sleeveRead 23 October 2026What Hi-Fi calls the MOMENTUM True Wireless 5 the sequel to the MOMENTUM True Wireless 4.

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$2998Press releasebose.com/pressroom/bose-announces-the-quietcomfort-ultra-earbuds-2nd-genRead 7 October 2026Opening availability paragraph: $299 original launch price.

$299.955Press releasenewsroom.sennheiser.com/sennheiser-triples-down-at-ces-24Read 6 October 2026Available to pre-order on February 15th for $299.95 USD / $429.95 CAD

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

€299.996Press releasenewsroom.sennheiser.com/sennheiser-triples-down-at-ces-24-vd4darRead 6 October 2026Available to pre-order on February 15th for £259.99 / €299.99 EUR

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US, GB, DE, AU1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 20262Maker product pagebose.de/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 30 September 20263Maker product pagebose.co.uk/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 30 September 2026Listed at £299.9514Retailer pageharveynorman.com.au/bose-quietcomfort-ultra-earbuds-2nd-gen-black.htmlRead 7 October 2026Exact AU retailer offers this SKU with an AUD price and Add to cart.15Retailer pageharveynorman.com.au/bose-quietcomfort-ultra-earbuds-2nd-gen-deep-plum.htmlRead 7 October 2026Exact AU retailer offers this SKU with an AUD price and Add to cart.

US, CA, GB, DE2Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 2026DE: EU maker store, prices incl. VAT3Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-4Read 6 October 2026US maker store, listed at USD 299.95. Marked End of Life on the page in October 20265Press releasenewsroom.sennheiser.com/sennheiser-triples-down-at-ces-24Read 6 October 2026CA: launch price in CAD6Press releasenewsroom.sennheiser.com/sennheiser-triples-down-at-ces-24-vd4darRead 6 October 2026GB: launch price in GBP

ColoursiThe maker's own colour names

Black, White Smoke, Deep Plum, Midnight Violet, Desert Gold1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Five colour swatches on the US page, Deep Plum selected

Black Graphite, White Silver, Black Copper, Gold, Denim2Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 2026Colour selector: Black Graphite, Black Copper, White Silver, Gold, Denim3Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-4Read 6 October 2026Same five colours as the EU store

Segment

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Design

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Form factoriIn-ear seals the ear canal with a tip. Semi-in-ear rests in the outer ear without a seal. Open-ear leaves the ear canal unobstructed.

In-ear1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Technical Specifications: Headphone Fit In-ear.

In-ear1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: wearing style True Wireless stereo earbuds, ear coupling ear-canal

Bud shapeiStem describes an extending control or microphone stalk. Stemless describes a compact body without a stalk.

Stem9Reviewtechradar.com/audio/earbuds-airpods/bose-quietcomfort-ultra-earbuds-2nd-gen-reviewRead 30 September 2026Features section explicitly describes swiping/stroking the stem to change volume. Short external control stalk.

Not available

Use one bud aloneiWhich earbud can operate alone. This does not mean two earbuds can play from different sources.

Either bud1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Either the left or right earbud can be used alone

Either bud1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 27: The right or left earbud can be used alone4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026

RGB lighting

Not available

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Drivers and sound

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Drivers per budiAudio transducers in one earbud. Rows distinguish their type, acoustic role and published diameter. Do not count microphones.

ABose QuietComfort Ultra Earbuds (2nd Gen)

Type	Count per earbud
Dynamic	1

Source10Reviewgalaxus.nl/en/page/bose-quietcomfort-ultra-earbuds-2nd-gen-what-bose-improves-and-what-it-doesnt-39335Read 7 October 2026Exact second-generation hands-on review states a conventional dynamic driver per side. One audio transducer per bud. Diameter is omitted because this source gives 9.3 mm while the TechRadar exact review gives 10 mm and Bose publishes neither. No acoustic-role label inferred.

BSennheiser MOMENTUM True Wireless 4

Type	Diameter (mm)	Count per earbud
Dynamic	7	1

Source1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: transducer principle dynamic, transducer size 7 mm. One transducer size is listed per earbud

Driver typeiPublished transducer technology. High-excursion, composite and neodymium do not by themselves establish a driver type.

Dynamic10Reviewgalaxus.nl/en/page/bose-quietcomfort-ultra-earbuds-2nd-gen-what-bose-improves-and-what-it-doesnt-39335Read 7 October 2026Review explicitly states conventional dynamic driver. Manufacturer does not publish the transducer technology.

Dynamic1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: transducer principle dynamic

Driver sizeiLargest explicitly published circular driver diameter in one earbud. A rectangular driver width is not a diameter.

Not available

7mm=CalculatedFrom Drivers per bud

Drivers per budiTotal audio transducers in one earbud, summed from explicit driver quantities. A row with an unknown quantity makes the total unknown.

1=CalculatedFrom Drivers per bud

1=CalculatedFrom Drivers per bud

Diaphragm material

Not available

Not available

Frequency responseiPublished acoustic frequency response of the earbuds. Codec transmission bandwidth alone does not qualify. Conditions belong in the source note.

Not available

Min5 HzMax21 kHz1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: 5 Hz to 21 kHz

Impedance

Not available

Not available

SensitivityiPublished acoustic sensitivity. The electrical reference and frequency must be stated in sensitivity_reference or the source note.

Not available

107dB1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: sound pressure level (SPL) 107 dB (1 kHz/1 mW)

Sensitivity reference

Not available

Per 1 mW1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026107 dB at 1 kHz/1 mW

Max sample rateiHighest supported audio sample rate under the codec and source-device conditions in the source note. This does not establish lossless playback.

Not available

96kHz1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 38: High Resolution Audio mode via aptX Adaptive transmits at 96 kHz and 24 bits. Needs an aptX Adaptive source

Max bit depthiHighest supported audio bit depth under the codec and source-device conditions in the source note. Bluetooth version alone does not establish this.

Not available

24bits1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 38: High Resolution Audio mode via aptX Adaptive transmits at 96 kHz and 24 bits. Needs an aptX Adaptive source

Adaptive EQiAn inner mic tunes the sound to your ear in real time

Not available

Not available

Personalised soundiA profile from a hearing test or ear scan

Yes1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026CustomTune FAQ describes an acoustic calibration tone at each power-on while worn. Reflected sound measures the unique ear and ear canal shape and adjusts playback. An ear-acoustic scan, not a hearing assessment.

Yes4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026Sound Personalization: guided listening test developed with the Fraunhofer Institute

Onboard EQ

Not available

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 38: The sound effects are stored in the earbuds and stay active with other Bluetooth devices

Custom EQ bandsiNumber of independently adjustable custom equalizer frequency bands. Availability may require current firmware, an app or a compatible device.

34Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Battery test footnotes use a 3-band EQ set to zero

52Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 20265-band equalizer

EQ presetsiNamed equalizer sound presets. Noise-control modes and spatial-audio modes are separate features.

Bass Boost, Bass Reducer, Treble Boost, Treble Reducer11Reviewsoundguys.com/what-do-the-bose-quietcomfort-ultra-earbuds-2nd-gens-eq-presets-sound-like-140870Read 7 October 2026Exact second-generation EQ comparison names these four Bose app sound presets as section headings. Default and Custom poll choices are not extra named presets. Listening modes are separate.

Not available

Volume limit

Not available

Not available

Spatial audio

2 of 2 differ

Spatial audioiNamed spatial or surround audio processing supported with the source and platform conditions stated in the source note.

Bose Immersive Audio1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Exact-model FAQ listening modes include Immersion (full noise cancellation with Immersive Audio).

Not available

Head trackingiSpatial audio changes with head movement. Static spatial processing alone does not qualify. Compatible device or content requirements belong in the source note.

Yes4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Immersive Audio Motion and Still settings: Still keeps the virtual speakers in place when you move your head

Not available

Noise cancelling

2 of 11 differ

Active noise cancelling

Yes1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Exact-model FAQ listening modes include Quiet (full noise cancellation).

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026

ANC typeiFeedforward uses exterior microphones. Feedback uses interior microphones. Hybrid uses both. Adaptive control is separate from microphone placement.

Hybrid1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026ANC FAQ: cancellation uses microphones both inside and outside the earbuds.

Hybrid1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: Hybrid Adaptive ANC technology

ANC microphones in both earbudsiPhysical microphones used by ANC across the pair. A shared call and ANC microphone counts once. Case microphones and vibration sensors are excluded.

Not available

44Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026The advanced system uses four microphones to continuously monitor ambient noise

Adaptive ANCiANC strength or calibration adjusts automatically to noise, fit or ear acoustics. The source note states the adjustment conditions.

Yes1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026FAQ: ActiveSense adapts cancellation in Aware Mode. CustomTune calibrates audio and cancellation at power-on.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 31: Adaptive mode reduces noise depending on the noise conditions

ANC levelsiNumber of selectable ANC strength levels. Excludes ANC off, transparency and activity profiles unless they explicitly set distinct strength levels.

Not available

Not available

ANC attenuation (claimed)iManufacturer maximum claimed noise attenuation. Frequency and measurement conditions belong in the source note. This is not reviewer-measured overall attenuation.

Not available

Not available

Transparency mode

Yes1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Exact-model FAQ listening modes include Aware (full audio transparency).

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026

Adjustable transparency

Yes10Reviewgalaxus.nl/en/page/bose-quietcomfort-ultra-earbuds-2nd-gen-what-bose-improves-and-what-it-doesnt-39335Read 7 October 2026Review explicitly describes adjusting ANC and transparency levels in the Bose app. Not an automatically selected activity profile.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 32: The intensity of Transparency Mode can be adjusted in the app

Automatic ANC and transparency blendiAutomatically blends active cancellation with ambient sound. Automatic activity-based switching between separate modes alone does not qualify.

Yes4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Aware Mode/ActiveSense automatically adjusts cancellation to loud external noise while allowing surroundings.

Not available

Conversation detection

Not available

Not available

Wind noise reductioniA documented physical design or processing feature for reducing wind noise. The source note distinguishes mesh or shape changes from selectable processing.

Yes1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026SpeechClarity FAQ explicitly filters surroundings and wind for phone and video calls. AI voice-pickup processing, not a dedicated user-selectable ANC wind mode.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 31: selectable Anti Wind ANC mode reduces wind or movement noise. Processing mode, not a mesh

Measured

6 of 23 differ

Frequency response notes (measured)iMeasured by a reviewer, not claimed by the maker

Warm sound signature7Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-earbuds-2nd-genRead 7 October 2026Sound signature: Warm

Warm sound signature10Measurementrtings.com/headphones/reviews/sennheiser/momentum-true-wireless-4Read 6 October 2026Sound Signature: Warm. Full measurements are members only and were not read

Bass amount (measured)iDeviation from the review source target in the bass range. Positive means more bass. Target, test method and settings belong in the source note.

5dB7Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-earbuds-2nd-genRead 7 October 2026Very Emphasized (5 dB), test bench 2.3

3dB10Measurementrtings.com/headphones/reviews/sennheiser/momentum-true-wireless-4Read 6 October 2026Emphasized (3 dB), test bench 2.3

Treble amount (measured)iDeviation from the review source target in the treble range. Positive means more treble. Values from different targets may not be directly comparable.

0dB7Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-earbuds-2nd-genRead 7 October 2026Balanced (0 dB), test bench 2.3

-4dB10Measurementrtings.com/headphones/reviews/sennheiser/momentum-true-wireless-4Read 6 October 2026Underemphasized (-4 dB), test bench 2.3

Deviation from target (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Consistency between fittings (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Harmonic distortion (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Sound leakage (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Noise isolation (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Noise isolation, best (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Passive isolation (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Call quality notes (measured)iMeasured by a reviewer, not claimed by the maker

Speech sounds clean and natural. Higher voices can lack airiness. Background-noise rejection is adequate but sustained loud sounds such as an arriving subway remain difficult.7Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-earbuds-2nd-genRead 7 October 2026Public Microphone usage assessment, test bench 2.3 on Deep Plum second-generation unit. Qualitative recording and noise-handling results. Exact firmware and microphone test settings are not stated in the free summary. Numeric frequency extension and noise-handling results remain member-locked and are not imported.

Not available

Mic low-frequency extension (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic high-frequency extension (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Mic speech-to-noise ratio (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Latency (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Bluetooth latency, worst (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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2.4 GHz latency, worst (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Latency in game mode (measured)iThe best case the buds can reach. Measured by a reviewer

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Battery life (measured)iReviewer-tested operation from one full charge of the earbuds. Excludes case recharges. ANC, codec, connection, volume and tested edition belong in the row or source note.

ABose QuietComfort Ultra Earbuds (2nd Gen)

ANC	Hours (h)
Yes	5.57
Not available	6.5

Source5Reviewsoundguys.com/bose-quietcomfort-ultra-earbuds-2nd-gen-review-140812Read 30 September 20265.57 h row: 5 h 34 min (334 min), ANC on, music peaking at 75 dB, firmware 4.9.146Measurementsoundguys.com/how-good-is-the-bose-quietcomfort-ultra-earbuds-2nd-gens-battery-life-141004Read 30 September 20265 h 34 min with ANC enabled, sample track peaking at 75 dB7Measurementrtings.com/headphones/reviews/bose/quietcomfort-ultra-earbuds-2nd-genRead 7 October 20266.5 h row: 6.5 hours of continuous playback in the usage summary. ANC state not stated in the free text. Full measurements are members only and were not read

BSennheiser MOMENTUM True Wireless 4

Hours (h)
7.75

Source9Reviewsoundguys.com/sennheiser-momentum-true-wireless-4-review-111429Read 6 October 2026Standardized battery test: 7 hours 45 minutes of music, peaking at 75 dB. Firmware 5.3.5. ANC state not stated

Longest tested use per chargeiHighest earbuds-only duration among stored reviewer tests. Modes and settings may differ between tests and products.

6.5h=CalculatedFrom Battery life (measured)

7.75h=CalculatedFrom Battery life (measured)

Battery life with case (measured)iReviewer-tested total including earbuds and case recharges. Do not calculate this by multiplying one-charge runtime by claimed recharge count.

Not available

Not available

Full charge time (measured)iBuds in the case, 0 to 100 %. Measured by a reviewer

Not available

Not available

Weight per bud (measured)iMeasured by a reviewer, not claimed by the maker

7.09g(0.3 oz)16Measurementtechgearlab.com/reviews/audio/wireless-earbuds/bose-quietcomfort-ultra-gen-2-earbudsRead 7 October 2026Exact Gen 2 review Specifications: Measured Weight 7.09 g (0.25 oz). The public table tooltip explicitly defines wireless earbuds as the weight of a single earbud. Ear-tip size and weighing instrument are not specified. This reviewer mass is separate from conflicting maker nominal masses.

Not available

Microphones and calls

4 of 7 differ

Voice microphones in both earbudsiPhysical call and beamforming microphones across the pair. Excludes case microphones and vibration sensors. Shared ANC microphones can also count here when used for calls.

88Press releasebose.com/pressroom/bose-announces-the-quietcomfort-ultra-earbuds-2nd-genRead 7 October 2026Launch voice-pickup paragraph explicitly combines the eight earbud microphones with AI noise suppression, dynamic mixing and adaptive filters for clearer calls. Pair total, including shared ANC microphones used for voice. Excludes the separate vibration sensors and case hardware.

62Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 2026Its high-quality 6-mic system ensures you can be heard perfectly during calls

All microphones in both earbudsiEvery physical microphone across the pair, including call and ANC microphones. Shared microphones count once. Excludes the charging case and voice vibration sensors.

88Press releasebose.com/pressroom/bose-announces-the-quietcomfort-ultra-earbuds-2nd-genRead 7 October 2026Voice pickup section: eight microphones in the earbuds.

61Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: 3 microphones per earbud (speech and ANC), MEMS

Bone conduction voice sensoriA dedicated bone or jaw conduction sensor for detecting speech vibrations. A microphone or speech-detecting accelerometer alone does not prove this architecture.

Yes5Reviewsoundguys.com/bose-quietcomfort-ultra-earbuds-2nd-gen-review-140812Read 30 September 2026Bone conduction pickup enabled by the August 2025 firmware update

Not available

Mic noise reduction

AI1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026AI-based background noise suppression (SpeechClarity)

AI4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026AI-supported voice pickup (firmware update required)

Call audio bandwidthiHighest supported call-audio bandwidth. Compatible phone, operating system, call app or network requirements belong in the source note.

Not available

Super wideband4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026Supports an advanced call mode called Super Wideband Audio

Mic mute controliAn earbud control that mutes the microphone during calls. Includes touch or pressure gestures and physical buttons. Phone/app-only controls do not qualify.

Yes4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Tap an earbud to mute or unmute during a call

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 36: Tap the right or left touch panel 1x during a call to mute

SidetoneiHear your own voice in calls

Yes4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Self voice during calls, adjustable in the app

Yes3Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-4Read 6 October 2026A 6-mic system, adjustable sidetone, and call virtualization for clear calls

Connectivity

8 of 18 differ

Chip

Not available

Qualcomm S5 Sound Gen 25Press releasenewsroom.sennheiser.com/sennheiser-triples-down-at-ces-24Read 6 October 2026Built on the Qualcomm S5 Sound Gen 2 platform and Snapdragon Sound Technology

Connections

Bluetooth1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Technical Specifications list Bluetooth 5.3 and Bluetooth audio profiles.

Bluetooth1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026

Bluetooth

5.31Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Technical Specifications: Bluetooth 5.3.

5.41Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: Bluetooth 5.4 certified, class 1. FAQ: some early packaging says 5.3

Bluetooth codecs

SBC, AAC, aptX Adaptive4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026aptX Adaptive with Snapdragon Sound devices5Reviewsoundguys.com/bose-quietcomfort-ultra-earbuds-2nd-gen-review-140812Read 30 September 2026SBC, AAC and aptX Adaptive family

SBC, AAC, aptX, aptX Adaptive, aptX Lossless, LC31Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: aptX, aptX Adaptive/Lossless, AAC, SBC, Auracast Broadcast Audio, LC3

Bluetooth profiles

A2DP, HFP1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Technical Specifications: A2DP Bluetooth Audio Streaming and HFP Bluetooth.

AVRCP, A2DP, HFP, TMAP, PBP1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: AVRCP, A2DP, HFP, TMAP, PBP

LE Audio

No12Maker product pagesupport.bose.com/article/quietcomfort-ultra-earbuds-gen-2-specificationsRead 7 October 2026Bluetooth footnote explicitly says the earbuds do not receive content over LE Audio. BLE is used for app communication and control. Does not inherit the later over-ear headphones LE Audio update.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 20: Bluetooth 5.4, LE Audio and Auracast broadcast audio certified. Launch firmware lacked LE Audio, added by a firmware update

Auracast

Not available

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Pages 21 to 26: Auracast transmitters are selected in the Smart Control app. Added by a firmware update

MultipointiConcurrent Bluetooth connections to multiple source devices. Pairing memory and switching through a manufacturer account alone do not qualify.

Yes4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Bluetooth connections: actively connected up to two devices at a time, explicitly multi-point. (PDF page 44)

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 20264Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026Can be connected to two of the paired devices simultaneously

Multipoint devicesiMaximum source devices concurrently connected by Bluetooth, not the number remembered in pairing history.

24Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Bluetooth connections: actively connected up to two devices at a time, explicitly multi-point. (PDF page 44)

21Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: number of active connections 2

Multipoint with LDACiMany buds turn multipoint off on LDAC

Not available

Not available

Paired devices rememberediMaximum remembered Bluetooth source pairings. This is separate from simultaneous multipoint connections.

64Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Up to six devices in the device list, two active at once

61Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 20: saves the connection profiles of up to six Bluetooth devices

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Google Fast Pair4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Android devices: Connect using Fast Pair via Google Play Services. (PDF page 48)

Not available

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

9m2Maker product pagebose.de/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 30 September 2026Bluetooth-Reichweite 9 m4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026

Not available

Wireless receiveri2.4 GHz dongle

Not available

Not available

Receiver connector

Not available

Not available

Simultaneous 2.4 GHz and Bluetooth audioiBoth connection types can play audio together. Quick switching between independent modes does not qualify.

Not available

Not available

Latency

2 of 3 differ

Low latency mode

Yes12Maker product pagesupport.bose.com/article/quietcomfort-ultra-earbuds-gen-2-specificationsRead 7 October 2026aptX Adaptive footnote explicitly names low latency mode, also called Gaming Mode. Maker launch release restricts automatic low-latency aptX Adaptive processing to Snapdragon Sound-certified source devices. It adapts to wireless conditions. No fixed latency or exposed app toggle is claimed.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 39: Low Latency mode in the Smart Control app, for all Bluetooth codecs

Claimed latency

ABose QuietComfort Ultra Earbuds (2nd Gen)

Not available

BSennheiser MOMENTUM True Wireless 4

Connection	Mode	Latency (ms)
Bluetooth	Snapdragon Sound in Bluetooth LE Audio mode	20

Source4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026Gaming with up to approx. 20 ms latency needs an audio device that supports Snapdragon Sound in Bluetooth LE Audio mode

Lowest claimed latency

Not available

20ms=CalculatedFrom Claimed latency

Compatibility

2 of 4 differ

PlatformsiPlatforms with documented audio support. App availability and advanced features can be more limited. Edition-specific support is listed in variants.

Android, iOS1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Support page for the exact product: Bose app available on Google Play and the Apple Store, so Android and iOS are supported.

Android, iOS, Windows2Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 2026App support: Sennheiser Smart Control app for iOS and Android4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026Windows: FAQ covers Windows PC audio profiles MOMENTUM TW4 Stereo and Hands-Free

Connection per platformiDocumented audio connection for each platform. USB-C phone routes require a compatible port. Platform edition and microphone restrictions belong in source notes or feature requirements.

Not available

Not available

Features that need a specific deviceiDevice, operating system, firmware, codec, content, account or region requirements for a named feature.

ABose QuietComfort Ultra Earbuds (2nd Gen)

Feature	Needs
Fast Pair	Android device running Android 6.0 or higher
Snapdragon Sound	Snapdragon Sound-certified device, such as a compatible Android device
SimpleSync	Bose Smart Speaker or Bose Smart Soundbar

Source4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Fast Pair Android 6.0 or higher. (PDF page 48)

BSennheiser MOMENTUM True Wireless 4

Feature	Needs
Lossless Audio mode (aptX Lossless, 16 bit/44.1 kHz)	Snapdragon Sound certified smartphone or audio source that supports aptX Adaptive Lossless
High Resolution Audio mode (24 bit/96 kHz)	Audio source that supports aptX Adaptive and audio material in High Resolution quality
Latency of approx. 20 ms	Audio device that supports Snapdragon Sound in Bluetooth LE Audio mode
Eco mode	Devices that support aptX transmission
Bluetooth LE Audio, LC3 and Auracast	Firmware update

Source1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Pages 38 to 39 for Eco, High Resolution and Lossless modes4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026Lossless needs a Snapdragon Sound certified source with aptX Adaptive Lossless. LE Audio and Auracast came by firmware update

Official licence

Not available

Not available

Battery and charging

9 of 13 differ

Battery per budiBattery cell capacity of one earbud. The source note states typical or rated capacity. Charging input current is not capacity.

Not available

Not available

User-replaceable earbud batteryiThe maker documents normal battery replacement by the user with its approved procedure and tools. Service or recycling disassembly does not count.

Not available

Not available

Claimed battery lifeiManufacturer maximum runtime under the stated mode, codec and spatial processing state. Name the spatial or immersive processing mode and other conditions in source notes. Omit unspecified settings. with_case false means one charge of the earbuds. true means earbuds plus case recharges.

ABose QuietComfort Ultra Earbuds (2nd Gen)

Mode	Spatial audio	Includes case recharges	Hours (h)
ANC on	No	No	6
ANC on	Yes	No	4
Call	Not available	No	4

Source17Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 8 October 2026The exact manufacturer guide on printed page 41 gives up to 6 hours with Bose Immersive Audio Off and up to 4 hours with it On after a full charge. Both music rows use Quiet Mode with full active noise cancellation, Bluetooth A2DP streaming at 75 dB SPL playback loudness, and all three equalizer bands at zero. Manufacturer testing used production-representative units in January 2025 with IEC 60268-1 pink noise. The Bluetooth codec and Immersive Still/Motion setting are unspecified, so neither is inferred. These are manufacturer claims, not independent reviewer measurements. Both music rows are the earbuds alone from one charge. The case provides three additional full recharge cycles, but a total hour figure is not calculated. The call row has its own source below.18Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 8 October 2026The exact second-generation maker technical specification states Maximum Talk Time 4 hours. This supports only the unchanged call row. Its ANC, codec, volume, and spatial-processing test settings are not inferred from music-playback conditions.

BSennheiser MOMENTUM True Wireless 4

Mode	Codec	Includes case recharges	Hours (h)
ANC off	AAC	No	7.5
ANC on	Not available	No	7
ANC off	AAC	Yes	30

Source2Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 2026Battery lifespan: up to 7.5 hrs with earbuds (ANC off), up to 7.0 hrs (ANC on), up to 30 hrs overall with charging case. Test condition iPhone, mid volume level 85 dB. The manual pairs 7.5 h with ANC activated, which reverses ANC on and off4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 20267.5 h and 30 h total confirmed with iPhone within 1 m, AAC codec, medium volume, ANC and Transparency Mode off, custom EQ off

Longest claimed use per chargeiHighest earbuds-only runtime among all stored modes. This can be ANC off, Hearing Aid, heart-rate or call use. Read the battery table and source conditions.

6h=CalculatedFrom Claimed battery life

7.5h=CalculatedFrom Claimed battery life

Playback per charge with ANC (claimed)iHighest claimed earbuds-only playback with ANC enabled. Codec and spatial-audio conditions belong in the source note.

6h=CalculatedFrom Claimed battery life

7h=CalculatedFrom Claimed battery life

Playback per charge without ANC (claimed)iHighest claimed earbuds-only playback with ANC disabled. Codec and volume conditions belong in the source note.

Not available

7.5h=CalculatedFrom Claimed battery life

Total with case (claimed)iHighest claimed runtime including the initial earbud charge and all case recharges. It is not the case recharge runtime alone.

Not available

30h=CalculatedFrom Claimed battery life

Total with case and ANC (claimed)iClaimed total playback with ANC, including the initial earbud charge and case recharges.

Not available

Not available

Talk time (claimed)

4h=CalculatedFrom Claimed battery life

Not available

Full charge time, budsiTime to charge discharged earbuds to full in the case. Excludes charging the case itself or a combined buds-and-case result.

120min1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 20264Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Earbuds up to 2 hours

Not available

Charging guidanceiPublished charging guidance or estimates that do not separate earbuds and case. Preserve the maker’s component scope and limits. Do not assign an unspecified or combined estimate to a component-specific numeric field.

Not available

Not available

Quick charge timeiCharge duration corresponding to quick_charge_playback_h. Source note states earbuds-only or case-inclusive charging and playback settings.

20min1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 20264Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 202620-minute charge gives up to 2 hours

8min1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 16 and specifications: approx. 8 minutes of charging for approx. 1 hour of music playback

Earbud playback after quick chargeiEarbuds-only runtime after quick_charge_min of charging. A claimed case-inclusive total does not qualify. ANC, codec and volume conditions belong in the source note.

2h4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Charging Time notes: 20 minute charge powers earbuds up to 2 h. Full ANC, Quiet Mode, Immersive Audio off, 75 dB SPL footnote. (PDF page 41)

1h1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 16 and specifications: approx. 8 minutes of charging for approx. 1 hour of music playback

Charging case

3 of 10 differ

Case batteryiCharging-case battery cell capacity. The source note distinguishes typical, rated and output capacity. USB output capacity alone does not qualify.

Not available

820mAh1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: charging case 3.6 V, 820 mAh, 2.952 Wh2Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 2026Battery type: charging case 820 mAh

User-replaceable case batteryiThe maker documents normal case battery replacement by the user with its approved procedure and tools. Service or recycling disassembly does not count.

Not available

Not available

Case charging port

USB-C1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Technical specifications: Charging Interface USB C PORT.

USB-C1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026

Case full charge timeiBy cable, 0 to 100 %. A time the maker gives with the earbuds inside the case counts, and the source note says so.

180min4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Charging case up to 3 hours

Not available

Wireless charging

Yes4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Manual page 38: Charge wirelessly using a compatible third-party wireless charger.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026

Wireless standardsiDocumented case charging standards or supported chargers. Magnetic alignment alone does not establish Qi2 certification.

Qi5Reviewsoundguys.com/bose-quietcomfort-ultra-earbuds-2nd-gen-review-140812Read 30 September 2026Any Qi-compatible charging pad

Qi1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: Qi wireless charging

Wireless charging poweriHighest wireless charging input the maker states for the case. The output of a charging pad does not count.

Not available

Not available

Speaker in caseiAn audio speaker physically in the charging case, for locating or status sounds. A microphone in the case is separate.

Not available

Not available

Screen on case

Not available

Not available

Case works as audio transmitteriCase relays external source audio through USB or an analog audio input. A case microphone for recording or calls does not qualify.

Not available

No9Reviewsoundguys.com/sennheiser-momentum-true-wireless-4-review-111429Read 6 October 2026You can't use the charging case as a transmitter

Controls

3 of 5 differ

ControlsiPressure is a force sensor that does not move, such as a stem you squeeze. Button is a key that moves when pressed.

Touch, Swipe4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Touch Control: tap and swipe. (PDF page 24)

Touch1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Pages 29 to 36: touch control panels, tap and touch-and-hold gestures

Earbud volume controliHow earbud controls adjust volume, including a voice command if supported. Phone or app controls alone do not qualify.

Swipe4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Touch Control: swipe up or down for volume. (PDF page 24)

Touch1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Pages 29 to 30: touch and hold the right panel for louder, the left panel for quieter

Gestures

Tap, Double-tap, Triple-tap, Touch and hold, Swipe up, Swipe down4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Touch Control: tap and swipe, swipe up or down for volume. (PDF page 24)

Tap 1x, Tap 2x, Tap 3x, Touch and hold1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Pages 29 to 36: tap 1x, 2x, 3x and touch and hold

Remappable controls

Yes4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Change or disable shortcut, assign different shortcuts to each bud in the Bose app. (PDF page 28)

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 39: control functions can be customized in the Smart Control app

Voice assistant

Siri, Google Assistant13Maker product pagebose.co.uk/stories/how-to-control-bose-wireless-earbudsRead 7 October 2026Maker names Siri and Google Assistant as phone voice assistants. The exact QuietComfort Ultra Earbuds (2nd Gen) row instructs assigning press-and-hold to launch that connected phone assistant. Requires a supported source device and Bose app shortcut configuration. No independent always-listening earbud assistant is claimed.

Siri, Google Assistant1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 33: Siri, Google Assistant or similar, depending on the device

Sensors and health

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In-ear detection

Yes4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026In-ear Detection automatic play/pause on removing or reinserting. (PDF page 29)

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 7: infra-red proximity sensor. Page 33: Smart Pause stops playback when an earbud is removed

Sensors

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Infra-red proximity sensor1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 7: product overview lists an infra-red proximity sensor

Heart rate sensor

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Skin temperature sensingiA documented skin temperature sensor. This is separate from the operating temperature range or a heart-rate sensor.

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Hearing aid featureiAmplification for mild to moderate hearing loss

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Medical clearances

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Hearing testiA documented hearing assessment feature, including consumer sound-personalization tests. Medical diagnostic clearance must be stated separately.

Not available

Yes4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026Consumer sound-personalization listening test in the Smart Control app. Not a medical test

Hearing protectioniLimits sudden loud sounds

Yes1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026ActiveSense applies noise cancellation to very loud sudden sounds in Aware Mode

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Health features

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Fit and durability

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Ear tips includediTip sizes supplied with the product, including the pair fitted to the earbuds. Do not list separately sold sizes as included.

S, M, L1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026What's in the box, exact 2nd Gen: three eartip pairs S/M/L.

XS, S, M, L1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Package contents page 5: silicone ear adapters XS, S, M (pre-mounted) and L

Ear tip materials

Silicone1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Silicone eartips

Silicone1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026

StabilisersiPhysical stabilizing fittings or structures. Stability bands are separate from fins, wings and ear hooks.

Stability bands1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Stability bands in sizes 1, 2, 3

Fins1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Package contents page 5: silicone ear fins S, M (pre-mounted) and L

Ear tip fit test

Yes1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Earbud Seal Test in the Bose app

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 13: Fit Test function in the Smart Control app

Dust and water rating, buds

IPX41Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Technical Specifications: Water Resistant IPX4.

IP541Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Page 3 and specifications: earbuds IP54. The charging case is not splash waterproof

Dust and water rating, case

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Water resistance depth

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Software

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Companion app

Bose app1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Support page for the exact product names the Bose app.

Sennheiser Smart Control1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026

App platforms

Android, iOS1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Support page for the exact product: Bose app available on Google Play and the Apple Store.

Android, iOS1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026

User firmware updates

Yes4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Bose app setup enables future updates and new features. (PDF page 13)

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026

Finding network

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Precision findingiUWB in the case

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Live translation

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Dimensions and weight

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Weight per budiMass of one earbud. Tip size and approximate values belong in the source note. Do not store pair or case-inclusive mass.

Not available

6g(0.2 oz)1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: earbuds approx. 6 g each, charging case approx. 66 g, both earbuds and case approx. 78 g

Bud dimensionsiDimensions of one earbud on the explicitly identified width, height and depth axes. An unlabeled tuple cannot establish those axes.

Width12.4Height30Depth24.9mm(0.5 × 1.2 × 1 in)2Maker product pagebose.de/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 30 September 2026Einzelner Earbud 3.0 cm H x 1.24 cm W x 2.49 cm D

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Case weightiCharging case mass excluding earbuds. Case-inclusive product mass does not qualify unless the source explicitly gives the empty-case figure.

60g(2.1 oz)12Maker product pagesupport.bose.com/article/quietcomfort-ultra-earbuds-gen-2-specificationsRead 7 October 2026Physical Specifications gives Case: 0.06 kg, approximately 60 g, separately from One earbud. Maker product page independently lists Case 0.132 lb, consistent with about 60 g after rounding. Empty charging case, not case plus earbuds.

66g(2.3 oz)1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Specifications table, PDF page 48 to 49: charging case approx. 66 g

Case dimensionsiCharging-case width, height and depth on explicitly identified source axes. Report conflicting axis labels rather than reorder a tuple by appearance.

Width59.7Height66Depth26.9mm(2.4 × 2.6 × 1.1 in)2Maker product pagebose.de/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 30 September 2026Etui 6.6 cm H x 5.97 cm W x 2.69 cm D

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Certifications

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Hi-Res AudioiThe Japan Audio Society logos. Hi-Res Audio Wireless is also written Hi-Res Wireless Audio.

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Communication certifications

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FCC IDs

A94408L, A94408R4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026FCC ID: A94408L / A94408R, IC: 3232A-408L / 3232A-408R

2A3ULMTW48Regulatory filingcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/safety_instruction/Compliance_Information_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026USA: FCC ID 2A3ULMTW4 for the earbuds. No FCC ID for the charging case

Other certifications

Snapdragon Sound3Maker product pagebose.co.uk/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 30 September 2026Wireless Connectivity lists Snapdragon Sound4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Features Snapdragon Sound technology

Snapdragon Sound4Maker product pagefirmware.s-consumer-cloud.com/help/products/mtw4/en/faq/index.htmlRead 6 October 2026Snapdragon Sound feature with aptX Lossless

In the box

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In the box

2 Bose QuietComfort Ultra Earbuds (2nd Gen), 3 pairs of eartips (S, M, L), 3 pairs of stability bands (1, 2, 3), Wireless charging case, 12" USB-C® (A to C) cable, Safety sheet1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026What's in the box, exact 2nd Gen: 2 buds, three eartip pairs S/M/L, three stability bands 1/2/3, wireless case, 12 inch USB-A to C cable, safety sheet.

Earbud R for right ear (model: MTW4 R) and earbud L for left ear (model: MTW4 L), Charging case (model: MTW4 C) with built-in rechargeable battery for the earbuds and wireless charging function, USB charging cable with USB C and USB A connector, approx. 0,4 m, Silicone ear adapters (size XS, S, M (pre-mounted to the earbuds) and L), Silicone ear fins (size S, M (pre-mounted to the earbuds) and L), Quick guide, Safety guide, Compliance sheet1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Package contents, page 5

Cables included

ABose QuietComfort Ultra Earbuds (2nd Gen)

Type	Length (m)	Count
USB-C (A to C)	0.3048	1

Source1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 202612 inch cable, converted exactly to 0.3048 m

BSennheiser MOMENTUM True Wireless 4

Type	Length (m)	Count
USB-C to USB-A	0.4	1

Source1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Package contents: USB C to USB A cable, approx. 0.4 m. EU declaration of conformity lists USB-C 400mm

Links

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Product page

www.bose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.html1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026Exact product heading identifies the maker product URL.

eu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-42Maker product pageeu.sennheiser-hearing.com/en-de/products/momentum-true-wireless-4Read 6 October 2026EU maker store, English

Spec sheet

support.bose.com/article/quietcomfort-ultra-earbuds-gen-2-specifications12Maker product pagesupport.bose.com/article/quietcomfort-ultra-earbuds-gen-2-specificationsRead 7 October 2026Exact model support Specifications page. Readable public indexed text. Direct HTTP yields a support-shell page.

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Manual

assets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdf4Owner's manualassets.bosecreative.com/m/36b7ddda21b6edfd/original/898447_OG_QCUE2-HEADPHONEIN_EN.pdfRead 30 September 2026Owner guide cover identifies QUIETCOMFORT ULTRA EARBUDS (2ND GEN). (PDF page 1)

cdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdf1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Instruction manual version 07/25 A04, model MTW4, MTW4 R, MTW4 L, MTW4 C

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year1Maker product pagebose.com/p/earbuds/bose-quietcomfort-ultra-earbuds-2nd-gen/QCUE2-HEADPHONEIN.htmlRead 7 October 2026US: one-year Bose limited warranty

1year1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-4/Instruction%20manual%20MOMENTUM%20True%20Wireless%204/Instruction_manual_MOMENTUM_True_Wireless_4.pdfRead 6 October 2026Manufacturer declarations page 50: Sonova Consumer Hearing GmbH gives a warranty of 12 months on this product. The maker FAQ names a 2-year global warranty program except USA, Australia, New Zealand and Brazil, so EU buyers may get 2 years

Both are also in the API. Back to all earbuds.