Earbuds / Compare

Bose QuietComfort Ultra Earbuds (2nd Gen) vs Samsung Galaxy Buds4 Pro

A

Product A: Bose

QuietComfort Ultra Earbuds (2nd Gen)

90 of 166 known

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B

Product B: Samsung

Galaxy Buds4 Pro

85 of 166 known

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Every value links to where we found it.

Only differences

ABose QuietComfort Ultra Earbuds (2nd Gen)

BSamsung Galaxy Buds4 Pro

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.

Galaxy Buds3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Maker model heading names the Galaxy Buds4 series. Pro is the product level. The Galaxy Buds line is stored as the series, as for the other Galaxy Buds.

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.

SM-R640, SM-R640NZKAXAR, SM-R640NZWAXAR, SM-R640NZDAXAR, SM-R640NZKADBT, SM-R640NZWADBT, SM-R640NZDADBT4Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-pro/buyRead 30 September 2026Exact product purchase configuration lists US XAR and German DBT SKU model codes.5Maker product pagesamsung.com/de/audio-sound/galaxy-buds4-pro/buyRead 30 September 2026Germany black variant model code, parent model SM-R640.

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.

Not available

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.

25 February 20267Press articlegsmarena.com/samsung_galaxy_buds4_and_buds4_pro_unveiled_with_new_blades_better_audio-news-71709.phpRead 30 September 2026Unveiled 25 February 2026 alongside the Galaxy S 26

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.

Available4Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-pro/buyRead 30 September 2026On sale on samsung.com/us on 2026-09-30

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.

Samsung Galaxy Buds3 Pro14Measurementrtings.com/headphones/reviews/samsung/galaxy-buds3-pro-truly-wirelessRead 23 October 2026A notice on the RTINGS Galaxy Buds3 Pro review says these headphones were replaced by the Samsung Galaxy Buds4 Pro.15Reviewtomsguide.com/audio/earbuds/embargo-25th-feb-6pm-gmt-samsung-announces-galaxy-buds-4-and-galaxy-buds-4-pro-5-key-features-you-can-expectRead 23 October 2026Tom's Guide names the Galaxy Buds 3 and Galaxy Buds 3 Pro as the predecessors of the Galaxy Buds 4 and Buds 4 Pro.

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

Not available

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.

$249.9910Press releasenews.samsung.com/us/samsung-galaxy-s26-series-galaxy-buds4-series-now-available-worldwideRead 30 September 2026Launch availability release March 2026: Galaxy Buds 4 Pro $249.99, standard Buds 4 $179.99.

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

€24911Press releasenews.samsung.com/de/top-klang-trifft-auf-tragekomfort-samsung-prasentiert-galaxy-buds4-serieRead 30 September 2026Launch Pricing and Availability: Buds 4 Pro UVP €249. Standard Buds 4 €179.

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, DE4Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-pro/buyRead 30 September 2026Exact product purchase configurations in US and German maker stores.5Maker product pagesamsung.com/de/audio-sound/galaxy-buds4-pro/buyRead 30 September 2026The German maker store lists the black variant as in stock.

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, White, Pink Gold1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 20263Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Pink Gold is an online exclusive4Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-pro/buyRead 30 September 2026

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-ear1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026"canal-fit design"

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.

Stem1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Blade (stem)

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 bud8Reviewsoundguys.com/samsung-galaxy-buds-4-pro-review-153435Read 30 September 2026Review FAQ confirms either earbud can be used individually.

RGB lighting

Not available

Not available

Drivers and sound

9 of 17 differ

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.

BSamsung Galaxy Buds4 Pro

Type	Role	Diameter (mm)	Count per earbud
Dynamic	Woofer	11	1
Not available	Tweeter	Not available	1

Source1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Speaker: Φ11 3.5 t (WF) / 5.5 x 3.5 x 0.9 T (TW). The tweeter is 5.5 x 3.5 mm, not round, so no single size. Driver type not stated13Maker product pagesamsung.com/us/audio-sound/galaxy-buds4Read 8 October 2026Find the best Galaxy Buds comparison, exact Pro column: Enhanced Dynamic Driver (Woofer) plus Tweeter. This establishes dynamic woofer technology only. Tweeter diameter remains unknown.

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.

Not available

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

Not available

11mm=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

2=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

Not available

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

Not available

Sensitivity reference

Not available

Not available

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

96kHz1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Pro Sound Quality column: 96 kHz UHQ requires listed Samsung Galaxy devices with One UI 6.1.1+.

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

24bits1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Pro Sound Quality column: 24-bit Hi-Fi requires compatible Samsung Galaxy devices/One UI 4.0+, 96 kHz UHQ requires 6.1.1+.

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

Not available

Yes1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 20266Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Adjust sound to fit

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.

Yes6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Adapt sound (Galaxy Buds 4 Pro only)

Onboard EQ

Not available

Not available

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

93Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026"9-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

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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).

360 Audio3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026360 Audio paragraph expressly mentions head tracking.

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

Yes3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026360 Audio paragraph expressly mentions head tracking.

Noise cancelling

3 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).

Yes2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Exact R640 German specs row: ANC yes.

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.

Not available

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

Not available

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.

Yes2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Exact R640 German specs row: Adaptive ANC yes.

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).

Yes2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Exact R640 German specs row: Ambient Sound yes.

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.

Yes6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Ambient sound volume slider (Galaxy Buds 4 Pro only)

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.

Yes2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Exact R640 German specs row: Adaptive Noise Control yes.

Conversation detection

Not available

Yes2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Exact R640 German specs row: Voice Detection yes.

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.

Not available

Measured

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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 signature. Bass emphasized, treble slightly underemphasized.9Measurementrtings.com/headphones/reviews/samsung/galaxy-buds4-proRead 30 September 2026Sound signature: Warm. Detailed results 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

3dB9Measurementrtings.com/headphones/reviews/samsung/galaxy-buds4-proRead 30 September 2026Public summary on test bench 2.3: Emphasized (3 dB)

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

-2dB9Measurementrtings.com/headphones/reviews/samsung/galaxy-buds4-proRead 30 September 2026Slightly Underemphasized (-2 dB)

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

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

BSamsung Galaxy Buds4 Pro

Hours (h)
6.02

Source8Reviewsoundguys.com/samsung-galaxy-buds-4-pro-review-153435Read 30 September 20266 h 1 min in the SoundGuys standardized battery test. ANC setting and codec 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)

6.02h=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

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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.

63Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026HD Voice feature: six microphones isolate the voice for calls. The companion video text explicitly gives three per earbud, six across pair.

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.

61Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Pro microphone column: two HSNR digital plus one digital microphone per earbud, six across the pair. VPU is not a microphone.2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 20263Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026

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

Yes8Reviewsoundguys.com/samsung-galaxy-buds-4-pro-review-153435Read 30 September 2026Exact model mic review calls voice pickups bone conduction.

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)

AI1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Machine learning models for noise reduction (DNN)

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

Not available

Super wideband6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Advanced quality: Super wideband speech 16 kHz. The source must be a qualified compatible Galaxy phone. (PDF page 28)

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

Not available

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

Not available

Connectivity

11 of 18 differ

Chip

Not available

Not available

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.

Bluetooth2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Exact R640 German specs row: Bluetooth 6.1.

Bluetooth

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

6.12Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Exact R640 German specs row: Bluetooth 6.1.

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, Samsung Seamless, SSC UHQ, LC32Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Exact R640 German specs row: AAC, SBC, SSC, SSC-UHQ and 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.

A2DP, AVRCP, HFP, PBP, TMAP2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Technical specifications: A2DP, AVRCP, HFP, PBP, TMAP.

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.

Yes2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Exact R640 German specs row: LE Audio yes.

Auracast

Not available

Yes1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 20266Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Listen to audio broadcast

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)

No8Reviewsoundguys.com/samsung-galaxy-buds-4-pro-review-153435Read 30 September 2026"The earbuds don't support true Multipoint"

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)

Not available

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

Not available

Automatic switching between own devicesiThrough the maker's account

Not available

Yes6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Auto Switch Buds automatically switches between own Galaxy devices for call and media. (PDF page 30)

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

0 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.

Yes6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Gaming mode under Labs, Samsung mobile devices only

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

Not available

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, iOS2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Compatibility: Bluetooth audio works with iOS as well as Android. Advanced earbud settings require compatible Android/Galaxy device.

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.

ABose QuietComfort Ultra Earbuds (2nd Gen)

Not available

BSamsung Galaxy Buds4 Pro

Platform	Connection	Microphone works
Android	Bluetooth	Yes
iOS	Bluetooth	Yes

Source12Maker spec sheet (PDF)image-us.samsung.com/SamsungUS/home/mobile/audio-sound/galaxy-buds4/Buds4F-Available-Features-by-Device-As-of-2026-03-03.pdfRead 8 October 2026Page 1 exact Pro column: standard audio/call streaming on Galaxy, other Android, and other Bluetooth devices including iOS/PC. Stored phone routes require a compatible Bluetooth host. No direct Xbox/PlayStation support is inferred from the generic console category.

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)

BSamsung Galaxy Buds4 Pro

Feature	Needs
Ultra High Quality audio up to 24-bit / 96 kHz	Galaxy S26, S25, S24 and S23 Series, Z Fold7, Z Flip7, Z Fold6, Z Flip6, Z Fold5, Z Flip5, Tab S11, Tab S10 and Tab S9 Series with One UI 6.1.1+. UHQ is off by default. Use phone settings on One UI 8.0+ or Galaxy Wearable on earlier versions.
Super wideband calls	Samsung March 3, 2026 chart lists S26 / S25 Series, Z Fold7 / Fold6 / Flip7 / Flip6, Tab S11 / S10 Series, S25 FE / S24 FE, A57, A56, A37, A36, A17 and A16. Maker product FAQ requires One UI 6.1.1+ and warns that support also depends on the mobile network.
360 Audio	Samsung Galaxy smartphones and Galaxy Tab devices with One UI 3.1 or later, and selected Samsung TV models
Head gestures	Compatible Galaxy device with One UI 8.5 or later. Feature is off by default and requires setup. Samsung account required for Galaxy Wearable settings.
Advanced settings	One UI 8.0 or later, or the Galaxy Wearable app on Android 12.0 or above with at least 1.5 GB of memory. Not supported on iOS
Gaming mode	Samsung mobile device
Interpreter	Galaxy smartphone with Galaxy AI on One UI 6.1.1 or later
24-bit / 48 kHz audio	Samsung March 3, 2026 compatibility chart lists Galaxy S25 FE, S24 FE, A57, A56, A37, A36, A17 and A16 as 24-bit / 48 kHz hosts, not 96 kHz hosts.
Saved settings on iOS or other Bluetooth devices	First enable Adaptive Noise Control, Adaptive ANC/EQ, Equalizer, Voice/Siren Detect or Voice Command through Galaxy Wearable on Android. These enabled features persist on other Bluetooth devices until disabled through the same Android process.
Auracast	Galaxy or other Android source device with Auracast capability. Samsung March 3, 2026 compatibility chart does not support Auracast on iOS or other Bluetooth devices.
Auto Switch	Samsung account registered through Galaxy Wearable. Samsung chart supports Galaxy and other Android devices, not iOS or other Bluetooth devices.

Source3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Current FAQ retains S23/S24, Fold5 / Flip5 and Tab S9 among 96 kHz hosts absent from the shorter March chart. UHQ is off by default. One UI 8.0 refers to settings location, not eligibility. SWB also depends on network support.6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 202612Maker spec sheet (PDF)image-us.samsung.com/SamsungUS/home/mobile/audio-sound/galaxy-buds4/Buds4F-Available-Features-by-Device-As-of-2026-03-03.pdfRead 8 October 2026As of 3 March 2026. Page 2 distinguishes 96 kHz hosts from S25 FE / S24 FE and listed A-series 48 kHz hosts, which also support SWB. Page 1 footnote **: listed Android-enabled settings persist on other Bluetooth hosts until disabled in Wear. Product FAQ separately lists older 96 kHz hosts absent from the shorter chart. No custom-profile capacity or firmware-independent storage claim is inferred.

Official licence

Not available

Not available

Battery and charging

10 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

61mAh1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Typical. Rated 57 mAh2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Technical specifications: 61 mAh typical, not 57 mAh rated.

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.

BSamsung Galaxy Buds4 Pro

Mode	Includes case recharges	Hours (h)
ANC on	No	6
ANC off	No	7
ANC on	Yes	26
ANC off	Yes	30
Call	No	5
Call	Yes	22

Source1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Pro column: 6 h ANC on/7 h off earbuds-only. 26 h on/30 h off case-inclusive. Call 5 h/22 h totals with ANC off, versus 4.5 h/20 h ANC on. The stored call claim uses ANC off.2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026

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

7h=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

6h=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

7h=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

26h=CalculatedFrom Claimed battery life

Talk time (claimed)

4h=CalculatedFrom Claimed battery life

5h=CalculatedFrom Claimed battery life

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

Not available

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)

Not available

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

530mAh1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Typical. Rated 515 mAh2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Technical specifications: 530 mAh typical, not 515 mAh rated.

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-C6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 20268Reviewsoundguys.com/samsung-galaxy-buds-4-pro-review-153435Read 30 September 2026USB-C port on the back of the case

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.

Yes3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Exact-model FAQ: Galaxy Buds4 Pro charging case supports wireless charging.

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

Not available

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

Not available

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)

Pressure, Swipe, Head gestures, Voice commands3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Pinch on a force sensor, swipe for volume, head gestures, voice commands (Buds 4 Pro only)

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)

Swipe6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Earbud controls table: pinch, double, triple, hold and swipe volume. (PDF page 17)

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)

Pinch, Double pinch, Triple pinch, Pinch and hold, Swipe up or down, Nod or shake head6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Earbud controls table: pinch, double, triple, hold and swipe volume. (PDF page 17)

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)

Yes6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Manual page 24: left and right pinch-and-hold shortcuts can be assigned independently.

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.

Bixby, Gemini, Perplexity1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026AI agents Bixby, Google Gemini and Perplexity started hands-free

Sensors and health

3 of 9 differ

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)

Yes6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026In-ear detection routing. (PDF page 31)

Sensors

Not available

Voice Pickup Unit (VPU), Force & Touch (Swipe), SWIR, Accelerometer, Gyro, Hall sensor1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Verbatim from the Buds 4 Pro spec column

Heart rate sensor

Not available

Not available

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

Not available

Not available

Hearing aid featureiAmplification for mild to moderate hearing loss

Not available

Not available

Medical clearances

Not available

Not available

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

Not available

Not available

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

Not available

Health features

Not available

Neck stretch reminders6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Neck stretch reminders for a head position held ten minutes. (PDF page 31)

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.

S, M, L3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Exact model FAQ: 3 sets, small, medium and large. Medium is installed.

Ear tip materials

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

Silicone3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026FAQ: "3 sets of silicone ear tips"

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

Not available

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

Yes6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Manual page 28: Earbud fit test applies to Galaxy Buds4 Pro.

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.

IP571Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026IP57, earbuds only2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 20266Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026

Dust and water rating, case

Not available

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Water resistance depth

Not available

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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.

Galaxy Wearable3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Exact model linked app compatibility: Android 12+, minimum 1.5 GB memory.6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Access features via device Settings One UI 8+ or Galaxy Wearable. (PDF page 21)

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.

Android3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Exact model linked app compatibility: Android 12+, minimum 1.5 GB memory.6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Access features via device Settings One UI 8+ or Galaxy Wearable. (PDF page 21)

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)

Yes6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Earbuds software update user instructions. (PDF page 34)

Finding network

Not available

Samsung Find2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Services and Apps: Samsung Find Yes.

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Yes3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Interpreter section: paired Galaxy S26, Samsung Phone app, live call translation and face-to-face phone-screen interpretation.

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

5.1g(0.2 oz)1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026With M size ear tip2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026

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

Width18.1Height30.9Depth19.6mm(0.7 × 1.2 × 0.8 in)1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026Earbud 18.1 x 19.6 x 30.9 mm, axes from the Samsung EU spec table (H 30.9, W 18.1, D 19.6)2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026Technical specifications explicitly H 30.9 x W 18.1 x D 19.6 mm.

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.

44.3g(1.6 oz)1Press releasenews.samsung.com/global/samsung-unveils-all-new-galaxy-buds4-series-with-ultimate-soundRead 30 September 2026With M size ear tip, as listed2Maker product pagesamsung.com/de/audio-sound/galaxy-buds/galaxy-buds4-pro-black-sm-r640nzkadbtRead 30 September 2026

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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Not available

Communication certifications

Not available

Not available

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

Not available

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

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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.

Earbuds, 3 sets of ear tips (S/M/L), Charging Case, Quick Start Guide3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026FAQ. Charger and USB Type-C cable not included

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

BSamsung Galaxy Buds4 Pro

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Links

Not compared

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.

www.samsung.com/us/audio-sound/galaxy-buds4-pro3Maker product pagesamsung.com/us/audio-sound/galaxy-buds4-proRead 8 October 2026Opened exact maker product page heading.

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.

Not available

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)

downloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdf6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026Maker user guide cover. (PDF page 1)

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.

Not available

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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

1year6Owner's manualdownloadcenter.samsung.com/content/UM/202603/20260311043809413/WEA_R540_R640_EN_UG_YLA_022626_FINAL.pdfRead 30 September 2026US: Standard One-year Limited Warranty

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