Headsets and headphones / Compare

Bose QuietComfort Headphones (2nd Gen) vs Sennheiser MOMENTUM 4 Wireless

A

Product A: Bose

QuietComfort Headphones (2nd Gen)

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B

Product B: Sennheiser

MOMENTUM 4 Wireless

90 of 161 known

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Only differences

ABose QuietComfort Headphones (2nd Gen)

BSennheiser MOMENTUM 4 Wireless

General

4 of 8 differ

Series

QuietComfort1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Exact QuietComfort Headphones (2nd Gen) product identity. Ultra, original 2023 QuietComfort and soft-case SC packages are excluded.

MOMENTUM2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026

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

443644, 895491-01002Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Original Bose 2026 guide AM901307-0010 Rev01, regulatory pages 4-8 name model 443644. Commercial 895491-0100 comes from the exact retailer below.6Retailer pagenfm.com/bose-quietcomfort-2nd-gen-headphones-in-black-70869201/70869201.htmlRead 8 October 2026Exact US Black item 70869201 lists Model 895491-0100. The commercial identifier and regulatory 443644 are separate naming systems. No soft-case SC bundle or Ultra identifier.

M4AEBT, 800107, 800074, 700383, 800073, 509267, 800109, 8001081Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 20263Maker product pageus.sennheiser-hearing.com/products/momentum-4-wireless.jsRead 5 October 2026Commercial SKU identifiers from public current maker data joined to exact colors/GTIN rows. Regulatory model M4AEBT independently established by manual cover.4Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Exact regulatory model M4AEBT is printed on the current manual cover. Commercial SKU identifiers sit in the exact sold-configuration rows.

GTIN / EAN

0178178596846Retailer pagenfm.com/bose-quietcomfort-2nd-gen-headphones-in-black-70869201/70869201.htmlRead 8 October 2026Exact US Black item 70869201 lists UPC 017817859684. No soft-case SC bundle or Ultra identifier.

810091270431, 810091274095, 810091272626, 810091274088, 810091270455, 810091274323, 8100912743163Maker product pageus.sennheiser-hearing.com/products/momentum-4-wireless.jsRead 5 October 2026Each barcode joined to exact SKU and color in variants. Black current SKU 800107 differs from stale product specification Black 509266. Barcode 810091270431 matches current Black. Current SKU used without claiming another hardware generation.

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

6 August 20263Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026Dated maker launch announcement August 6 2026. Preorder August 8, shipping August 13.

9 August 20226Press releasecdn.uc.assets.prezly.com/ba6f235a-b675-4ed2-bacf-090e7ac559bd/-/inline/no/press-releasesennheiser-momentum-4-wireless.pdfRead 5 October 2026Exact manufacturer US launch PDF, dated August 9, 2022. Four pages opened.

Status

Available1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Exact US Black reference can be purchased at the time of access.

Available2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026

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

Bose QuietComfort Headphones (2023)3Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026The release refines the first-generation 2023 QuietComfort Headphones. No Ultra predecessor inferred.

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 5 Wireless10Reviewsoundguys.com/sennheiser-momentum-5-wireless-131570Read 23 October 2026SoundGuys's launch article calls the MOMENTUM 4 the previous model of the MOMENTUM 5 Wireless.

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

$3593Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026US launch paragraph states 359 USD. Excludes tax and later discounts.

$349.956Press releasecdn.uc.assets.prezly.com/ba6f235a-b675-4ed2-bacf-090e7ac559bd/-/inline/no/press-releasesennheiser-momentum-4-wireless.pdfRead 5 October 2026Page 4 MSRP 349.95 USD, 459.95 CAD. Only USD retained, before applicable local sales tax. Planned sale August 23 is separately corroborated by retrospective actual release source. Euro launch 349.90 has unproven VAT scope and is omitted.

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

Not available

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

US1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Exact US product page and US retailer SKU prove US sale. Page language alone is not used.

US6Press releasecdn.uc.assets.prezly.com/ba6f235a-b675-4ed2-bacf-090e7ac559bd/-/inline/no/press-releasesennheiser-momentum-4-wireless.pdfRead 5 October 2026

ColoursiThe maker's own colour names

Black1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Black selected on exact maker page. Reference is US Black 895491-0100. Other colourways are not variants in this reference file.

Black, Brown, Graphite, Teal, White, Denim, Copper3Maker product pageus.sennheiser-hearing.com/products/momentum-4-wireless.jsRead 5 October 2026Public official product data currently lists seven sold color configurations. Related M5 colors and accessories excluded.

Segment

Music1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Maker Headphones category, everyday music listening product. USB videoconferencing support does not establish a dedicated office edition.

Music1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Design

1 of 7 differ

Form factor

Over-ear1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Technical Specifications explicitly Around Ear Circumaural.

Over-ear1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Ear cup enclosureiClosed, open or semi-open acoustic enclosure. This does not describe how the headset folds.

Closed10Retailer pagebhphotovideo.com/c/product/1993087-REG/bose_895491_0100_quietcomfort_headphones_2nd_gen.htmlRead 8 October 2026Exact US Black 895491-0100 Specs, Open/Closed-Back: Closed-Back. No fold geometry substitution.

Closed1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Wearing style

Headband1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Technical Specifications Headband: On Head Adjustable.

Headband1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

FoldingiFlat means the ear cups rotate flat. Inward means the ear cups fold toward the headband.

Flat and inward2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Care and Maintenance pages 37-38: rotate both cups flat, retract into the headband, fold the left cup inward toward the headband and place in the case.

Flat6Press releasecdn.uc.assets.prezly.com/ba6f235a-b675-4ed2-bacf-090e7ac559bd/-/inline/no/press-releasesennheiser-momentum-4-wireless.pdfRead 5 October 2026US manufacturer launch PDF Design section expressly fold-flat design. Current manual page 34 case diagram corroborates flat rotated earcups.

Swivelling ear cupsiEar cups can rotate relative to the headband. Tilting alone does not count.

Yes2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Care and Maintenance page 37: rotate earcups inward until flat. B&H lists swivel No, which conflicts and is excluded.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Current manual page 34 storage diagram and exact maker fold-flat claim show each cup rotated flat without an inward-folded headband. No separate folding hinge asserted.

RGB lighting

Not available

Not available

Lighting zonesiNumber of independently controllable lighting areas across both ear cups.

Not available

Not available

Drivers and sound

11 of 20 differ

Driver type

Dynamic10Retailer pagebhphotovideo.com/c/product/1993087-REG/bose_895491_0100_quietcomfort_headphones_2nd_gen.htmlRead 8 October 2026Exact SKU Specs, Driver Type: Dynamic. Diameter omitted due to a credible 30 mm and 40 mm source conflict.

Dynamic1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Driver sizeiDiameter of the largest sound driver. Do not use the microphone capsule diameter.

Not available

42mm1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Drivers per sideiNumber of sound-producing transducers in one side, excluding microphones.

110Retailer pagebhphotovideo.com/c/product/1993087-REG/bose_895491_0100_quietcomfort_headphones_2nd_gen.htmlRead 8 October 2026Exact SKU Specs Number of Drivers: 1 per Earpiece. Microphones not counted as audio transducers.

Not available

Diaphragm material

Not available

Not available

Magnet

Not available

Not available

Frequency response (wired or passive)iPublished acoustic range for wired listening, or the maker’s single range when no mode is distinguished. Power state and test standard belong in the source note.

Not available

Min6 HzMax22 kHz1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 39 headphone range 6 Hz-22 kHz at -10 dB, not microphone or Bluetooth transmission bandwidth.

Wireless audio transmission bandiFrequency range of audio transmitted over the wireless connection, not the acoustic response of the driver. Codec, sampling rate and bitrate conditions belong in the source note. When the maker gives a range per codec, the widest range is stored and its codec goes in the source note.

Not available

Not available

Impedance (passive when specified)iUse the headset-off value for a passive analog connection when the maker publishes both powered and passive values. Note the power state and test frequency.

Not available

60Ω2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026Exact specification gives active 470 ohms and passive 60 ohms. Passive value 60 retained by schema rule. Active 470 is not substituted.

Sensitivity (passive when specified)iUse the headset-off figure when both powered and passive values exist. The power or voltage reference, test distance and frequency belong in the source note.

Not available

106dB1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 39 gives 106 dB SPL at 1 kHz / 0 dBFS. This is not 1 mW or 1 V sensitivity, so sensitivity_reference omitted.

Sensitivity referenceiPublished power or voltage reference for sensitivity. Do not assume 1 mW when the source gives only a dB value.

Not available

Not available

THD (claimed)iPublished distortion figure or numerical upper bound. The source note states any less-than sign and test level.

Not available

0.3%1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 39 less than 0.3%, 1 kHz / 100 dB SPL. Stored 0.3 is the stated bound, not measured distortion.

Max input power

Not available

Not available

Max digital audio sample rateiHighest supported digital audio sample rate over a USB cable or wireless dongle. This is not the microphone rate or acoustic frequency response.

48kHz5Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Wired listening FAQ: lossless USB input up to 24-bit/48 kHz. No Bluetooth codec maximum imported.

Not available

Max digital audio bit depthiHighest published digital playback bit depth over a USB cable or wireless dongle.

24bits5Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Wired listening FAQ: USB input 24-bit/48 kHz.

Not available

DAC

Not available

Not available

Personalised soundiA manufacturer-supported hearing test or ear scan creates a device sound profile tailored to the listener. Generic equalizer adjustments do not count.

Not available

Not available

Onboard EQiCustom playback EQ profiles stored in the headset and applied without the host app running. Note supported active connections. Receiver-only or software-only EQ does not count.

Not available

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 31 explicitly says sound effects are stored in headphones and active without Smart Control on another Bluetooth device.

Custom EQ bandsiNumber of bands in the custom playback equalizer. Microphone EQ bands are excluded.

33Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026Controls Connectivity Convenience section explicitly adjustable three-band EQ in Bose app.

52Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026Current exact comparison column states 5-band EQ plus personalization. Original launch app had fewer bands, so current count is not asserted as launch configuration.

EQ presets

Bass Boost, Treble Boost7Reviewsoundguys.com/i-tested-the-bose-quietcomfort-headphones-2nd-gen-and-theyre-a-legit-upgrade-161251Read 8 October 2026Sound section separately measures named Bass Boost and Treble Boost presets. No unnamed presets inferred.

Bass boost1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Volume limit

Not available

Not available

Spatial audio

2 of 3 differ

Spatial audio supportiNamed headset or host spatial-audio systems that the maker or reviewer explicitly supports. A platform feature may require compatible hardware, software or a separate licence.

Bose Immersive Audio, Cinema Mode3Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026Immersive Listening section names Bose TrueSpatial and Bose Immersive Audio Still, Motion and Cinema listening modes. Works with any audio source, not licensed Dolby Atmos decoding.

Not available

Spatial audio licence includediA paid spatial-audio licence is bundled or embedded. Compatibility with a separately purchased app does not count.

Not available

Not available

Head tracking

Yes3Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026Still keeps virtual audio fixed in the room as the head moves. Motion follows head movement. Maker spatial head-movement behavior.

Not available

Noise cancelling

2 of 10 differ

Active noise cancelling

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Technical Specifications says active adjustable noise cancellation. ANC can be disabled in the app.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

ANC typeiFeedforward uses outside microphones. Feedback uses inside microphones. Hybrid uses both. Voice-call noise filtering is separate.

Hybrid1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Acoustic Noise Cancelling FAQ explicitly identifies microphones inside and outside the earcups. Hybrid architecture, not inferred solely from adaptive controls.

Hybrid1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

ANC microphonesiTotal microphones used for active playback noise cancellation across both sides. Do not substitute the total physical or voice microphone count.

63Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026Noise section explicitly describes six-microphone system compensating for earcup seal gaps and maintaining active cancellation. Six is the complete system across headphones, not per cup. Separate call-microphone role count remains unproved.

41Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 7 explicitly two outward and two inward ANC microphones, total 4. It does not imply 8 speech microphones.

Adaptive ANCiNoise cancellation automatically changes with the environment or fit. Manually choosing a level does not count.

Yes3Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026Noise section identifies adaptive feedforward controls compensating gaps from glasses, hair and hats. ActiveSense increases cancellation for sudden sounds in Aware mode.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 26 app Adaptive switch automatically adjusts reduction to noise conditions. Manual excludes Transparency Mode during calls.

ANC levelsiNumber of adjustable cancellation strength steps. Off and transparency modes are excluded.

109Reviewtomsguide.com/audio/headphones/bose-quietcomfort-headphones-2nd-gen-reviewRead 8 October 2026Review ANC section states 10 levels of adjustment. Off, Aware and custom mode counts are excluded.

Not available

ANC attenuation (claimed)

Not available

Not available

Transparency mode

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Aware Mode FAQ explicitly identifies transparency using microphone arrays to reproduce environmental sound.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Adjustable transparency

Yes3Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026Custom Modes explicitly let users set individual balance between noise cancelling and acoustic transparency.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Conversation detectioniAudio pauses or lowers automatically when the wearer speaks. Voice assistant activation does not count.

Not available

Not available

Wind noise reduction

Yes4Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Listening Modes Custom row, page 23: supports a wind block noise-control setting. This is selectable processing, not an inferred foam microphone windscreen.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 26 Off/Auto/Max wind-noise reduction settings. No numeric attenuation claim inferred.

Measured

4 of 21 differ

Frequency response notesiMeasured by a reviewer, not claimed by the maker

The measured response has slightly emphasized bass and mids. The treble has peaks and dips. Disabling ANC makes the response more uneven.7Reviewsoundguys.com/i-tested-the-bose-quietcomfort-headphones-2nd-gen-and-theyre-a-legit-upgrade-161251Read 8 October 2026Reviewer curves relative to the SoundGuys preference target, default profile and ANC on and off. Firmware and connection or codec are not published. Numerical dB and THD values are not read from graphs.

The lab response has a small sub-bass boost and some emphasized highs against the SoundGuys headphone preference curve. The reviewer describes good overall agreement and clear speech detail.5Reviewsoundguys.com/sennheiser-momentum-4-wireless-review-2-86111Read 5 October 2026SoundGuys lab measurement and reviewer discussion, not the maker 6-22 kHz frequency range. No qualitative chart peak converted to dB.

Bass amountiReviewer’s bass deviation from its stated target. Positive is more bass. Target and test method belong in the source note.

Not available

Not available

Treble amountiReviewer’s treble deviation from its stated target. Positive is more treble. Target and test method belong in the source note.

Not available

Not available

Deviation from targetiReviewer’s full-range error from its target curve. Do not substitute a regional bass or treble error.

Not available

Not available

Consistency between fittingsiReviewer’s standard deviation across repeated fittings. Test rig and fitting procedure belong in the source note.

Not available

Not available

Harmonic distortioniIndependently measured harmonic distortion, with test level and method in the source note.

Not available

Not available

Sound leakageiIndependently measured leakage at 30 cm. Playback level and method belong in the source note.

Not available

Not available

Measured noise isolationiIndependently measured attenuation. Positive values mean more noise reduction. ANC state, rig and frequency bands belong in the source note.

Not available

Not available

Noise isolation (measured, best)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

Mic quality notesiMeasured by a reviewer, not claimed by the maker

Speech was clear in quiet and reverberant rooms. Office noise weakened clarity. Street and wind tests suppressed more of the voice along with background noise.7Reviewsoundguys.com/i-tested-the-bose-quietcomfort-headphones-2nd-gen-and-theyre-a-legit-upgrade-161251Read 8 October 2026Ideal, office, street, wind and reverberant microphone demos. Firmware, phone, codec and USB or Bluetooth route are unreported. No numeric microphone frequency limits inferred.

Recorded speech samples show usable voice quality. Background-noise rejection remains a limitation. Samples cover ideal, office, street, wind and reverberant conditions.5Reviewsoundguys.com/sennheiser-momentum-4-wireless-review-2-86111Read 5 October 2026Multiple tested units, latest stated firmware 2.13.35/app 4.9.1. The article does not date every speech recording or identify codec. These remain unknown.

Mic low-frequency extensioniMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic high-frequency extensioniMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic speech-to-noise ratioiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Measured latencyiEnd-to-end latency measured by a reviewer for a specific connection, platform and codec. Firmware, method and operating mode belong in the source note.

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Measured battery lifeiReviewer’s continuous playback test. State the connection, ANC and lighting where known. Unknown settings stay omitted and are described in the source note.

ABose QuietComfort Headphones (2nd Gen)

Not available

BSennheiser MOMENTUM 4 Wireless

Connection	ANC	Hours (h)
Bluetooth	Yes	56.35

Source5Reviewsoundguys.com/sennheiser-momentum-4-wireless-review-2-86111Read 5 October 2026Continuous music peaking 75 dB SPL, ANC on, 56 h 21 min. Codec and test-specific firmware not published. Article reviewed multiple units and names latest firmware 2.13.35/app 4.9.1, but it does not assign that firmware to this battery sample. No latest-firmware assumption.

Battery life (measured, max)iMeasured by a reviewer, not claimed by the maker

Not available

56.35h=CalculatedFrom Measured battery life

Clamping forceiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Weight (measured)iIndependently weighed headset. A review that repeats the maker’s number does not qualify. Cable and microphone inclusion belong in the source note.

Not available

Not available

Microphone

8 of 16 differ

MicrophoneiMain microphone used for speech. Secondary internal microphones may be described in the source note.

Built-in7Reviewsoundguys.com/i-tested-the-bose-quietcomfort-headphones-2nd-gen-and-theyre-a-legit-upgrade-161251Read 8 October 2026Call section describes headphone microphones used for calls. The owner guide Device Voice Control section also identifies earcup microphones. No in-line microphone in the supplied analog cable.

Built-in1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Microphone element

Not available

MEMS1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Microphone pickup patterniUse the maker’s exact named pattern. Unidirectional does not establish whether the capsule is cardioid, supercardioid or hypercardioid.

Not available

Omnidirectional1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Voice microphonesiTotal microphones used for voice pickup or beamforming across both sides. ANC-only microphones are excluded.

Not available

41Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Pages 6/39 explicitly four speech microphones as two 2-mic beamforming arrays. ANC-only mics are separately counted.

Total microphonesiEvery physical microphone across the headset, including call, ANC and calibration microphones. Shared microphones count once. Excludes microphones in charging cases or receivers, and vibration sensors. Use an explicitly published physical total, never a sum of overlapping role counts.

Not available

Not available

Mic frequency responseiAcoustic microphone response, not its digital sampling rate. Connection-specific ranges belong in the source note.

Not available

Min80Max8,000Hz1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Latest manual page 39 gives 80 Hz-8 kHz at -3 dB. Current product page says 50 Hz-10 kHz, so newer exact manual is preferred and conflict recorded.

Mic sensitivityiPublished microphone sensitivity. Reference such as dBV/Pa or dBFS, frequency and distance belong in the source note.

Not available

Not available

Mic signal-to-noiseiPublished microphone signal-to-noise ratio. Minimum or typical conditions belong in the source note.

Not available

Not available

Mic sample rateiExplicitly published digital microphone capture or speech sampling rate. State the audio route in the source note, or say it is unpublished. Internal capture does not prove the effective rate on every connection. Acoustic bandwidth, playback rate and generic microphone-chip capability do not qualify.

16kHz5Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Wired listening FAQ: voice output signal up to 24-bit/16 kHz through USB-C. This is transmitted USB microphone audio, not acoustic microphone bandwidth.

Not available

Mic noise reductioniProcessing that removes noise from transmitted speech. Playback ANC and a directional microphone alone do not count.

Not available

DSP2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026

Flip to mute

Not available

Not available

Mute button

Not available

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 28 multifunction button toggles call microphone mute. Page 30 also explains sensor mute after taking off.

Mute indicatoriPublished indication of microphone mute. mechanical_marker is a visible physical marker showing the microphone's mute-switch position. LED options require an electronic light. The in-line controller option is for a mute light on a cable remote.

Not available

Voice prompt1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 28 explicitly audible Mute on/Mute off voice prompts.

Sidetone

Yes2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Noise Cancellation While On a Call, page 20: Self voice is activated so the user hears their voice naturally.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Adjustable sidetone

Yes2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Page 20 directs Self voice adjustment through Bose app Settings. Maker FAQ says self voice is unavailable with ANC disabled.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 29 Sidetone enabled/disabled and intensity slider.

Foam microphone windscreeniA foam cover for the voice microphone. An internal metal mesh pop filter does not count.

Not available

Not available

Connectivity

11 of 20 differ

Audio connectionsiConnections that carry playback audio. Charging or firmware USB alone does not count as USB audio.

Analog, USB, Bluetooth2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Bluetooth menu pairing page 26, Aux Audio page 31 and USB Type-C Audio page 32 document these source audio routes. The analog source uses an active USB-C to 3.5 mm cable.

Analog, USB, Bluetooth1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Pages 26/32/33 explicitly Bluetooth, analog and USB playback. USB-C port carries audio, microphone and power.

Analog source plugsiAnalog plug(s) supplied for the source device, including adapters. The headset-side jack is listed separately.

3.5 mm TRS14Reviewrtings.com/headphones/reviews/bose/quietcomfort-headphones-2nd-genRead 8 October 2026Exact review Wired Gaming verdict identifies the included 1/8-inch TRS-to-USB-C cable as audio-only. This is the analog source plug. The headset has USB-C, requires power and disables voice pickup on this route per owner guide page 31.

3.5 mm TRS1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026SoundGuys exact TRS cable corroborates manual 3.5 mm source plug and 2.5 mm headset plug.

Cable connector on headsetiConnection used by the playback cable at the headset. A fixed cable is not replaceable through a headset jack.

USB-C2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Aux Audio page 31: both supplied cables attach to USB-C on the right cup. No 3.5 mm headset socket or original 2.5 mm jack.

2.5 mm1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Longest included cableiLength of the longest supplied cable, including charging and dongle cables. Individual cable lengths are listed in Cables included.

Not available

1.2m8Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 8 October 2026Package contents printed page 5: both supplied USB-C to USB-A cable and 2.5 mm to 3.5 mm analog cable are approximately 1.2 m. Longest supplied cable, not an optional longer accessory.

Headset USB plug or portiUSB plug or port on the headset or its included wired audio adapter. A charging-only USB port can appear here.

USB-C2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Headphone Controls diagram and Wired Connections identify USB-C port on right cup.

USB-C1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Audio over USB-C cableiPlayback through a USB-C cable or included wired USB-C audio adapter. A charging-only USB-C port does not count.

Yes2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026USB Type-C Audio page 32 supports playback from a connected USB-C source.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Passive wired listeningiAnalog playback works with the headset powered off or its battery empty. An active analog converter that needs headset power does not count.

No2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Aux Audio page 31 requires the headphones to be powered on. Battery-depleted operation requires a powered USB connection, not passive analog playback.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 32 explicitly analog listening when the headphone battery is empty. Music/call/assistant controls disabled, ANC requires charged battery.

Wireless receiveriDedicated wireless audio receiver or dongle. A wired USB sound card does not count.

None11Reviewrtings.com/headphones/reviews/bose/quietcomfort-headphones-2nd-genRead 8 October 2026Wireless Gaming verdict says no low-latency wireless dongle is included. Generic optional Bluetooth transmitters such as AirFly do not establish a dedicated 2.4 GHz headset receiver.

Not available

Wireless receiver connectoriPhysical USB connector on the receiver. Supplied extension cables and adapters are explained in the source note. Both means two native connector types.

Not available

Not available

Wireless range (claimed)iMaker’s advertised wireless range. Connection and indoor or outdoor conditions belong in the source note. Measured distance is not stored here.

9m1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Range FAQ: up to 30 ft (9 m). The maker metric claim of 9 m is stored, not a conversion of the rounded 30 ft. Walls, doors and radio interference reduce range.

Not available

Bluetooth

5.41Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Technical Specifications explicitly Bluetooth 5.4. Bluetooth Low Energy listing does not establish LE Audio support.

5.21Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Bluetooth codecsiNamed Bluetooth audio codecs supported by this exact model. Host, firmware and operating-mode restrictions belong in the source note.

SBC, AAC7Reviewsoundguys.com/i-tested-the-bose-quietcomfort-headphones-2nd-gen-and-theyre-a-legit-upgrade-161251Read 8 October 2026Exact 2nd Gen review Connectivity section: SBC and AAC only, no LDAC or aptX. No sibling Ultra codec inherited.

SBC, AAC, aptX, aptX Adaptive1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Printed page 39 lists aptX Adaptive, AAC and SBC. Current August 2026 maker specification separately confirms classic aptX, included from that exact table. Bluetooth Low Energy device name does not prove LE Audio.9Maker product pagesupport.sennheiser-hearing.com/hc/en-at/articles/37791406604189-MOMENTUM-4-Wireless-SpecificationsRead 8 October 2026Current exact MOMENTUM 4 table updated August 8, 2026 expressly lists SBC, AAC, aptX and aptX Adaptive. It identifies the Black 509266 and other exact finish SKUs. Older manual omits classic aptX. Current explicit maker specification supports it without implying aptX HD, aptX Lossless or a firmware version.

LE AudioiLE Audio playback support. Bluetooth Low Energy for app control alone does not count.

No8Reviewexpertreviews.co.uk/technology/headphones-audio/bose-quietcomfort-headphones-2nd-gen-reviewRead 8 October 2026The exact base QCH2 review says no LE Audio and no Auracast. Source tested for 3 weeks. Original Ultra or Ultra 2 later beta firmware excluded.

Not available

AuracastiAuracast broadcast audio support. Required phone, firmware and app conditions belong in the source note.

No7Reviewsoundguys.com/i-tested-the-bose-quietcomfort-headphones-2nd-gen-and-theyre-a-legit-upgrade-161251Read 8 October 2026Connectivity: no Auracast at launch. Later Ultra LE Audio and Auracast firmware is excluded from this base model.

Not available

Bluetooth multipointiCan remain connected to multiple Bluetooth source devices at once. Mixing Bluetooth with a proprietary dongle is a separate field. A maker's dual connection to two Bluetooth devices at once counts.

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026FAQ explicitly maintains connection to two devices simultaneously.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Multipoint devicesiNumber of Bluetooth source devices connected at once, not the number remembered for later pairing.

21Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026FAQ explicitly two simultaneous Bluetooth source connections. Pairing memory is separate.

21Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Paired devices remembered

Not available

68Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 8 October 2026Bluetooth connection section printed page 16: six saved profiles, two active connections. A seventh pairing overwrites the least-used stored profile. One audio source plays at a time.

Mixes 2.4 GHz and Bluetooth audioiPlays both wireless audio streams at the same time. Automatic switching or Bluetooth standby does not count.

Not available

Not available

Fast pairing

Google Fast Pair2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Bluetooth Connections, page 30: Google Fast Pair enables one-tap pairing on Android devices. Bluetooth and Location must be enabled. No Swift Pair inferred.

Not available

Base station

Not available

Not available

Latency

None of 2 known

Low latency modeiA selectable mode intended to reduce audio delay. A low-latency connection without a distinct mode does not count.

Not available

Not available

Claimed latencyiMaker’s claimed delay for the stated connection and mode. Minimum claims and host restrictions belong in the source note.

Not available

Not available

Compatibility

2 of 3 differ

Compatible platformsiPlatforms with a documented audio path. This does not imply every connection or microphone function works. Platform editions must be checked individually.

Android, iOS12Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Bose App setup page 12 directs to the App Store and Google Play. Bluetooth Fast Pair is explicitly Android. Phone Call and Voice Control sections document microphone operation on a paired mobile source. No specific desktop or console USB compatibility is inferred from generic computer charging instructions.

Windows, macOS, Android, iOS1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Connection per platformiOnly explicitly documented playback paths for the exact model. Microphone support is separate. Leave unknown microphone support omitted. An Xbox and a PlayStation edition of one headset can connect differently, so it is per variant.

ABose QuietComfort Headphones (2nd Gen)

Platform	Connection	Microphone works
Android	Bluetooth	Yes
iOS	Bluetooth	Yes

Source12Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Phone Call and Voice Control sections document microphone operation on a paired mobile source over Bluetooth. Bose App setup page 12 directs to the App Store and Google Play. No specific desktop or console USB compatibility is inferred from generic computer charging instructions.

BSennheiser MOMENTUM 4 Wireless

Platform	Connection	Microphone works
Windows	USB	Yes
macOS	USB	Yes
Windows	Bluetooth	Yes
macOS	Bluetooth	Yes
iOS	Bluetooth	Not available
Android	Bluetooth	Not available

Source1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 33 USB playback and microphone recording for PC/Mac/mobile device. Page 27 explicitly PC/Mac Bluetooth calling. Page 29 mobile assistant Siri/Google Assistant plus maker iPhone battery test establishes iOS/Android Bluetooth playback. Unknown mobile call path remains omitted.

Official licence

Not available

Not available

Battery and charging

7 of 13 differ

Battery capacityiRated capacity of one headset battery. Do not use case, receiver or total multi-battery capacity.

530mAh10Retailer pagebhphotovideo.com/c/product/1993087-REG/bose_895491_0100_quietcomfort_headphones_2nd_gen.htmlRead 8 October 2026Exact SKU Battery section: 530 mAh LiPo battery. Typical or rated basis unstated. Manufacturer manual omits capacity. The exact 2nd Gen John Lewis item independently indexed 530 mAh. Inaccurate retailer cable and wired-support rows are excluded.

700mAh1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 39 one built-in 3.7 V, 700 mAh, 2.59 Wh pack. Capacity and energy agree. No headset Wh field is available.

Swappable batteryiBattery can be exchanged by the user as part of normal operation. Service or recycling disassembly does not count.

No2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Safety section says battery removal is only by a qualified professional. Page 39 directs Bose battery service and compatible Bose-certified batteries. No routine user exchange or disposal procedure is represented as swappable operation.

No1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 36 built-in battery faults are repaired through Sonova service. It is not a normal removable or hot-swap pack.

Batteries includediNumber of headset batteries supplied, including the one already installed.

Not available

Not available

Claimed battery lifeiMaker’s maximum playback time per stated connection, codec, ANC, spatial audio and lighting settings. Name the spatial processing mode and other conditions in the source note. Unknown settings stay omitted.

ABose QuietComfort Headphones (2nd Gen)

ANC	Spatial audio	Hours (h)
Yes	No	24
Yes	Yes	18

Source4Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Battery page 34: 24 h full ANC with Immersive Audio off and 18 h full ANC with Immersive Audio on. Connection and codec are unstated in this claim, so the rows leave them unknown. Maker product footnote gives 75 dB SPL volume. These are not ANC-off figures or the Ultra 30 h.

BSennheiser MOMENTUM 4 Wireless

Connection	ANC	Hours (h)
Bluetooth	Yes	60

Source1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 39 up to 60 h music playback via Bluetooth with ANC on. Current maker page specifies iPhone, mid-volume, codec unspecified.

Battery life (claimed, max)

24h=CalculatedFrom Claimed battery life

60h=CalculatedFrom Claimed battery life

Battery life with ANC (claimed)

24h=CalculatedFrom Claimed battery life

60h=CalculatedFrom Claimed battery life

Battery life without ANC (claimed)

Not available

Not available

Charging port

USB-C2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Battery page 33: charges through the right-earcup USB-C.

USB-C1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Full charge timeiPublished time to fully charge a depleted headset. In-use charging can take longer.

180min2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Battery page 34 says allow up to 3 hours. Faster powered off. Slower during use.

120min1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 13 explicitly complete charging cycle approximately 2 h. Page 39 repeats 2 h. Ambient temperature and power source can change it.

Quick charge timeiCharge duration in the maker’s quick-charge claim. Read together with Quick charge playback.

15min2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Battery page 34: a 15 minute charge of a depleted battery gives up to 2.5 hours with ANC on and Immersive Audio off.

5min2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026

Quick charge playbackiPlayback gained from Quick charge time. Charger power, codec, volume and ANC conditions belong in the source note.

2.5h2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Page 34 footnote: 75 dB SPL playback, 3-band EQ at zero, Quiet full ANC and Immersive Audio off. Up to 2.5 h. The Immersive Audio on alternative of 2 h is not this field. Maker test conducted April 2025 on production-representative 2nd Gen units.

4h2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026Exact specifications states 5 min up to 4 h. Separate marketing section says 10 min / 6 h, a different charge duration. The matched 5 min / 4 h pair is kept.

Use while charging

Yes2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Battery page 33: Bluetooth or USB audio during charging. Page 32 supports battery-depleted operation using external USB power. Analog playback while charging is not asserted.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 13 explicitly permits music and phone calls during charging, possibly extending charge time.

Charging dock or stand

Not available

Not available

Controls

5 of 6 differ

Controls

Buttons2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Headphone Controls pages 13-19 describe the Bluetooth/Power switch, Action, multifunction and volume buttons. No touch controls inferred.

Buttons, Touch1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Volume control

Buttons2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Media Playback and Volume page 16 uses plus and minus buttons.

Touch1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Game and chat mixiBalances separate game and chat audio streams. Mixing Bluetooth and dongle source volume alone does not count. Supported platforms belong in the source note.

Not available

Not available

Remappable controlsiOn-device button, touch or dial functions can be reassigned. Changing EQ alone does not count.

Yes2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Shortcuts page 19 allows enabling, disabling or changing the Action-button shortcut through the app. Other fixed buttons are not described as remappable.

Not available

Wear detection

No9Reviewtomsguide.com/audio/headphones/bose-quietcomfort-headphones-2nd-gen-reviewRead 8 October 2026Review Specs and Design sections state no wear detection. No RGB or additional microphone sensors inferred from missing wear detection.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Voice assistant

Not available

Siri, Google Assistant1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 29 host assistant activated by button over Bluetooth or USB, example Siri/Google Assistant depending on mobile system/app. No built-in always-listening assistant assumed.

Comfort and build

5 of 11 differ

Headband type

Padded3Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 8 October 2026Refined Design section explicitly plush soft synthetic-leather headband cushioning.

Padded1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Headband material

Plastic with protein-leather cushioning1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Product comparison identifies streamlined plastic headband. Protein-leather material and plush headband cushioning are described in exact product specs and launch release. No prior-model steel reinforcement imported.

Plastic5Reviewsoundguys.com/sennheiser-momentum-4-wireless-review-2-86111Read 5 October 2026Use section explicitly describes a plastic band replacing the predecessor metal band. Not mapped to earcup shell material.

Frame material

Plastic yoke1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Product comparison, exact second-generation column explicitly plastic yoke. This describes the structural yoke, not a claim that every internal part is plastic.

Not available

Ear cup material

Not available

Not available

Ear pad material

Protein leather1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Technical Specifications Ear Cushion Material explicitly Protein Leather.

Leatherette5Reviewsoundguys.com/sennheiser-momentum-4-wireless-review-2-86111Read 5 October 2026Use section explicitly soft leatherette padding.

Replaceable ear pads

Yes1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Technical Specifications says Removable Cushion. Owner guide pages 40-41 releases and reinstalls all retaining tabs and identifies replacement accessories.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Ear pad attachmentiHow a replacement ear pad attaches to the ear cup, not how the decorative outer cover attaches. A press-fit or snap-on pad counts as clip.

Clip2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Pages 40-41: release tabs around the earcup rim and snap every tab back into place. Stored as clip, not magnetic or twist-lock.

Clip1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 35 removal with fastening ring and new pad clicks into earcup.

Ear pad openingiUsable opening inside an ear pad, excluding the outer cushion. Depth is the internal space between pad surface and driver cover.

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Width35Height60mm(1.4 × 2.4 in)5Reviewsoundguys.com/sennheiser-momentum-4-wireless-review-2-86111Read 5 October 2026Exact model metadata Inside earcup 60 x 35 mm, matching vertical oval in photos. Height 60, width 35. Depth unknown.

Ear tips included

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Dust and water rating

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User-replaceable parts

Ear cushions, USB-C cables2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Pages 40-41 show removable cushions and page 39 lists replacement accessories. Both USB cables are separate replaceable accessories. Battery service is excluded.

Ear pads1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Software

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Companion app

Bose2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Bose App page 12 identifies the app for setup and product control.

Sennheiser Smart Control Plus2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026Current page names Smart Control Plus, while the 2025 manual still says Smart Control. Existing product remains supported.

App platforms

Android, iOS2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Bose App setup diagram gives App Store and Google Play. Google Fast Pair is explicitly Android. The Tom's Guide review independently names iOS and Android app support.

Android, iOS1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 19 explicitly Apple App Store and Google Play downloads.

User firmware updates

Yes2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Care and Maintenance page 39: updates automatically when the Bose app finds firmware. Alternative user update via btu.Bose.com on a computer.

Yes1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026

Dimensions and weight

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Headset weightiPublished headset mass without detachable cable or microphone when stated. A fixed cable remains included. Any unqualified maker weight is identified in the source note.

230g(8.1 oz)5Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Technical Specs, Entire Product System: 0.507 lb. Converted using 453.59237 g/lb and rounded to 0.1 g. Published rounded claim, cable condition unstated. SoundGuys 230 g agrees. TechRadar 241 g conflicts. No reviewer measurement is asserted.

293g(10.3 oz)1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Page 39 maker approximate 293 g whole headset. No review metadata treated as a scale test.

Headset dimensionsiBody size with headband upright and ear cups in their normal wearing position. Width is across the head, height is top to bottom, and depth is front to back. Folded or flat-swivel dimensions are not substituted.

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Certifications

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Hi-Res Audio

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Communication certifications

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FCC ID

A944436442Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Regulatory section gives FCC ID A94443644 for model 443644.

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Other certifications

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In the box

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In the box

QuietComfort Headphones (2nd Gen), Carry case, USB-C to USB-C cable, USB-C to 3.5 mm cable, Safety Sheet5Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Product What is in the box inventory. Technical Specs says Audio Cable Included No, which the inventory and FAQ contradict, so it is excluded.

MOMENTUM 4 headphones, Carry case, USB-A to USB-C cable, 2.5 mm to 3.5 mm audio cable, Airplane adapter, Quick guide, Safety guide, Compliance sheet1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Manual page 5 includes the headphones, USB cable, analog cable, carry case, in-flight adapter, Quick guide, Safety guide and Compliance sheet.2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026Exact maker box section corroborates manual page 5. Both cables approximately 1.2 m. BTD 700 is optional and excluded.

Cables includediSupplied playback, charging, dongle and adapter cables. A permanently attached headset cable is included and named as fixed.

ABose QuietComfort Headphones (2nd Gen)

Type	Length (m)	Count
USB-C to USB-C	0.9906	1
USB-C to 3.5 mm	Not available	1

Source5Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Maker inventory lists a C-to-C 39 in cable plus a USB-C-to-3.5 mm cable. Analog length left unknown. The B&H 20 in charging cable claim conflicts and is excluded.

BSennheiser MOMENTUM 4 Wireless

Type	Length (m)	Count
USB-A to USB-C charging and audio cable	1.2	1
2.5 mm to 3.5 mm TRS audio cable	1.2	1

Source1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 2026Manual page 5 explicitly gives both USB-A to USB-C and 2.5 mm to 3.5 mm audio cables at approximately 1.2 m each.

Carrying caseiSupplied carrying case or pouch. A retail carton does not count as a carrying case.

Hard4Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Store the Headphones pages 37-38 depict a protective zipper carrying case. The SoundGuys review calls it a sturdy protective case. The US Black reference includes the hard case, not the SC soft-case package.

Hard5Reviewsoundguys.com/sennheiser-momentum-4-wireless-review-2-86111Read 5 October 2026Exact review calls the supplied case fabric with rigid plastic. Hard case enum describes its supporting shell, not a soft pouch.

Links

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Product page

www.bose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.html1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Exact current maker product page with Black colour selection.

us.sennheiser-hearing.com/products/momentum-4-wireless2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026

Spec sheet

www.bose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.html1Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026Maker Technical Specifications and product FAQ. No separate technical datasheet was found.

us.sennheiser-hearing.com/products/momentum-4-wireless2Maker product pageus.sennheiser-hearing.com/products/momentum-4-wirelessRead 5 October 2026

Manual

assets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdf2Owner's manualassets.bosecreative.com/m/1bc02035222c5422/original/901307_OG_QCHII-Headphonearn_en.pdfRead 8 October 2026Official Bose-hosted 45-page English Owner Guide linked from the current product page. Not the QuietComfort 2 2003 guide or the Ultra guide.

cdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdf1Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-4-wireless/Instruction%20manual%20MOMENTUM%204%20Wireless/Instruction_manual_MOMENTUM_4_Wireless.pdfRead 5 October 202641-page current English manual, version 07/25 A05. Hardware 6-7, specifications 39, charging 13-15, audio 32-33, controls 22/26-31 and pad replacement 35 checked.

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/headphones/bose-quietcomfort-headphones-2nd-gen/QC2G-HEADPHONEARN.htmlRead 8 October 2026US product page Bose 1-Year Limited Warranty section. Starts immediately and covers mechanical breakdown and battery failure. Optional BoseCare years excluded.

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Both are also in the API. Back to all headsets and headphones.