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Bose QuietComfort Headphones (2023) vs Sennheiser MOMENTUM 4 Wireless

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Product A: Bose

QuietComfort Headphones (2023)

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Product B: Sennheiser

MOMENTUM 4 Wireless

90 of 161 known

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Every value links to where we found it.

Only differences

ABose QuietComfort Headphones (2023)

BSennheiser MOMENTUM 4 Wireless

General

4 of 8 differ

Series

QuietComfort2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026

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.

437310, 884367-01001Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Regulatory model 437310 is shared with some related QuietComfort revisions. Marketed 2023 model identified by exact current product page and 884367 commercial SKU in review, not model number alone.10Retailer pagebhphotovideo.com/c/product/1785014-REG/bose_884367_0100_quietcomfort_wireless_over_ear_active.htmlRead 7 October 2026Exact MFR 884367-0100 Black commercial SKU added alongside preserved regulatory 437310. These are different identifier systems, not two claimed chipset revisions.

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

01781784896110Retailer pagebhphotovideo.com/c/product/1785014-REG/bose_884367_0100_quietcomfort_wireless_over_ear_active.htmlRead 7 October 2026Exact Black US commercial SKU 884367-0100 UPC 017817848961. Base union of known identifiers. Black variant alone records this gtin, no other color assigned its code.

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.

14 September 20234Press releaseprnewswire.com/news-releases/bose-announces-new-quietcomfort-ultra-headphones-and-earbuds-with-bose-immersive-audio-for-the-most-realistic-sound-ever-301928295.htmlRead 5 October 2026Exact maker release September 14, 2023. Planned September 21 sale is separately corroborated by retrospective launch-history source.

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

Available2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Exact original QC product offers Add to Cart, current 359 USD is not used as launch price.

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.

Not available

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.

Bose QuietComfort Headphones (2nd Gen)16Press releasebose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphonesRead 23 October 2026Bose's press release calls the QuietComfort Headphones (2nd Gen) the next generation and compares them with the first-generation model.

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.

$3494Press releaseprnewswire.com/news-releases/bose-announces-new-quietcomfort-ultra-headphones-and-earbuds-with-bose-immersive-audio-for-the-most-realistic-sound-ever-301928295.htmlRead 5 October 2026Bose-authored US launch release explicitly original QuietComfort 349 USD, planned September 21. Ultra Headphones 429 USD and Ultra Earbuds 299 USD are separate products and excluded. US MSRP before local sales tax. No EUR figure with proven VAT scope.

$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.

US4Press releaseprnewswire.com/news-releases/bose-announces-new-quietcomfort-ultra-headphones-and-earbuds-with-bose-immersive-audio-for-the-most-realistic-sound-ever-301928295.htmlRead 5 October 2026

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

Black, Moonlight Grey, White Smoke, Cypress Green, Twilight Blue, Ice Blue, Sandstone, Petal Pink, Blue Dusk, Chilled Lilac, Moonstone Blue2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Exact initial product color swatches in public maker HTML use dwvar_QC-HEADPHONEARN_color. Ultra, 2nd Gen and related product swatches excluded. Historical Chilled Lilac color not in current selector is separately researched.11Maker product pagesupport.bose.com/s/article/quietcomfort-headphones-specificationsRead 7 October 2026Exact support Product Specifications entry explicitly Sold from 2023 and Available Colors list includes Blue Dusk, Chilled Lilac and Moonstone Blue in addition to existing eight colors. Public search-index table read. Live HTTP 200 page is a JS shell and web direct fetch failed, noted externally. No second-generation colors added.

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

Music1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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-ear1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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.

Closed2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Maker FAQ describes passive seal and TriPort acoustic structure with closed earcups. Vents are not open-back classification.

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

Headband1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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 inward1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 35 expressly rotate both cups flat and fold left cup toward headband.

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.

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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

9 of 20 differ

Driver type

Dynamic7Reviewtomsguide.com/audio/headphones/dont-get-the-new-bose-quietcomfort-2nd-gen-gen-1-is-currently-just-usd169-for-prime-dayRead 7 October 2026Comparison explicitly says both 2023 first generation and 2026 second generation use the same 40 mm dynamic drivers. Exact original model scope, not Ultra. B&H exact 884367-0100 Driver Type Dynamic corroborates.

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.

40mm7Reviewtomsguide.com/audio/headphones/dont-get-the-new-bose-quietcomfort-2nd-gen-gen-1-is-currently-just-usd169-for-prime-dayRead 7 October 2026Comparison explicitly says both generations use same 40 mm drivers. Exact original TechRadar review specification table independently states 40 mm, contrasted with 35 mm Ultra. Not borrowed merely because older headphones look similar.12Reviewtechradar.com/audio/wireless-headphones/bose-quietcomfort-headphones-reviewRead 7 October 2026Exact original 2023 QuietComfort review specification table explicitly 40 mm drivers, independently read. Later Ultra and 2nd Gen not substituted.

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.

115Retailer pagebhphotovideo.com/c/product/1785014-REG/bose_884367_0100_quietcomfort_wireless_over_ear_active.htmlRead 8 October 2026The exact Black 884367-0100 Number of Drivers row explicitly states one per earpiece. This is a physical transducer count, not a stereo-channel inference. Other retailer charging and dimensional rows disagree with the maker and are not used.

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.

Not available

Not available

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

Not available

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.

32Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Maker FAQ and customization section explicitly bass, midrange, treble, three controls. Review independently calls three-band slider.

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 Boost, Treble Reduce3Reviewsoundguys.com/bose-quietcomfort-headphones-review-99695Read 7 October 2026Exact original review EQ section has Bass Boost EQ and Treble Boost EQ subheadings with tested curves. Only explicitly named presets listed. Custom EQ is user adjustment, not a fixed preset. Later-generation preset lists excluded.12Reviewtechradar.com/audio/wireless-headphones/bose-quietcomfort-headphones-reviewRead 7 October 2026Exact original review explicitly names selectable presets like Bass Boost or Treble Reduce. Treble Reduce retained as the reviewer-published name, not an independently inspected app-label string. SoundGuys independently names Bass Boost and Treble Boost. other unnamed presets omitted.

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

None of 3 known

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.

Not available

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

Not available

Not available

Noise cancelling

2 of 10 differ

Active noise cancelling

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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.

Hybrid2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Maker FAQ explicitly microphones inside and outside earcups, hybrid feedback/feedforward arrangement. No adaptive-ANC claim inferred from adaptive call microphone system.

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.

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 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.

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 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.

Not available

Not available

ANC attenuation (claimed)

Not available

Not available

Transparency mode

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Pages 20-21 two fixed Quiet/Aware and up to two Custom noise-control modes. Aware is full transparency, Custom adjusts noise control. No 11-level count inferred from number of modes.

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

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 20 Custom mode supports Wind Block. Current page FAQ duplicates conflicting later model text, so only the exact manual mode is used.

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

Lab measurements show a strong sub-bass emphasis and uneven upper-frequency response against the SoundGuys preference curve. Broad three-band app adjustments do not fully correct the profile.3Reviewsoundguys.com/bose-quietcomfort-headphones-review-99695Read 7 October 2026Same purchased review sample, stock firmware, app 8.0.5. No numeric graph extraction, score-to-dB conversion or band-average inference.

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

Recorded speech tests found background-noise rejection limited. Wind handling was more effective in the tested sample. Samples cover quiet, office, wind, street and reverberant environments.3Reviewsoundguys.com/bose-quietcomfort-headphones-review-99695Read 7 October 2026Same sample and firmware conditions. It does not prove a numerical microphone capsule count.

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 (2023)

Connection	Hours (h)
Bluetooth	27.23

Source3Reviewsoundguys.com/bose-quietcomfort-headphones-review-99695Read 7 October 2026Purchased sample ran 27 h 14 min under SoundGuys standardized continuous music test. Firmware stock version number unknown, app 8.0.5. ANC state/codec not explicitly named for this run and omitted. Linked methodology states 75 dB SPL peak playback. 27.23 h versus claim 24 h is documented actual measurement, not an estimate.6Measurementsoundguys.com/how-we-testRead 5 October 2026Battery methodology explicitly continuous playback peaking 75 dB SPL recorded to empty. It does not state a universal ANC setting, so the QC row retains unknown ANC and codec rather than inferring them.

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

27.23h=CalculatedFrom Measured battery life

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

6 of 16 differ

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

Built-in1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 30 explicitly distinguishes earcup voice microphones from the inline microphone supplied in the audio cable. Main field represents built-in voice system. Physical capsule count not stated and omitted.

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.

Not available

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

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 16 double-press left Action button mutes/unmutes active call. This is a context-sensitive control, not a separate physical mute button.

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

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 21 self voice activated during calls and adjustable in Bose 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 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

8 of 20 differ

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

Analog, Bluetooth1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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 TRRS15Retailer pagebhphotovideo.com/c/product/1785014-REG/bose_884367_0100_quietcomfort_wireless_over_ear_active.htmlRead 8 October 2026The exact Black 884367-0100 Wired Audio Connector row states one 3.5 mm TRRS source connector. The original Bose guide independently confirms the supplied 2.5 mm to 3.5 mm microphone cable and its source-side 3.5 mm plug. No headset-side contact count is imported.

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.

2.5 mm1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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-C1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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.

No3Reviewsoundguys.com/bose-quietcomfort-headphones-review-99695Read 7 October 2026Exact connectivity section explicitly no USB-C audio on original 2023 QC. The 2nd Gen model is different hardware 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 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.

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 30 audio and calls through supplied inline-mic cable when battery depleted or headphones off. Built-in earcup voice pickup and Bluetooth disabled when cable connected.

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.

Not available

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.

9m14Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones/QC-HEADPHONEARN.htmlRead 8 October 2026The exact product range FAQ states up to 30 feet or nine meters from the Bluetooth source. Walls, doors, and electronic interference can reduce this distance. The maker metric figure is used without converting its rounded feet figure.

Not available

Bluetooth

5.12Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026

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, AAC3Reviewsoundguys.com/bose-quietcomfort-headphones-review-99695Read 7 October 2026

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.

Not available

Not available

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

Not available

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.

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 25 up to two active devices, one audio source playing at a time. Pairing-list memory size not stated.

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.

21Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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

81Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Printed page 23 explicitly says store up to eight devices in headphone device list. Active simultaneous count remains two.

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

Not available

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, iOS2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Exact maker FAQ says audio and calls on any smartphone and names native Siri plus Zoom/FaceTime. Exact manual setup uses Google Play/Apple App Store on Android/iOS. Only these documented mobile platforms listed, no console or generic desktop assumption.13Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Original manual Bose app setup page 11 uses App Store/Google Play and Bluetooth menu pairing to mobile device. Combined with maker explicit any-smartphone calls/audio claim, Android/iOS paths documented. No desktop/console inferred.

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 (2023)

Platform	Connection	Microphone works
Android	Bluetooth	Yes
iOS	Bluetooth	Yes

Source2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Bluetooth smartphone call path from exact FAQ. Built-in microphones used. Bose app platform setup corroborates Android/iOS. Analog path not assigned to platforms because plug-type/source-mic compatibility evidence conflicts.13Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Original Bluetooth menu/setup path and maker smartphone call FAQ establish Android/iOS Bluetooth playback and speech. Built-in microphones, not analog in-line route.

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.

Not available

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.

No1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Printed page 4 explicitly says do not attempt battery removal and only a qualified professional should remove it. This rules out normal user battery swapping, not repairability.

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 (2023)

Connection	ANC	Hours (h)
Bluetooth	Yes	24

Source2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Exact FAQ explicitly 24 h audio playback with noise cancellation turned on. Codec, volume, device and lighting unspecified.

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-C1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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.

150min1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 27 up to 2.5 hours to fully charge, 150 minutes.

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.

15min14Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones/QC-HEADPHONEARN.htmlRead 8 October 2026The current first-generation QuietComfort Headphones charging FAQ states a 15-minute fast charge. The product is identified as the successor to QuietComfort 45, not QuietComfort Headphones 2nd Gen.

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.

4h14Maker product pagebose.com/p/headphones/bose-quietcomfort-headphones/QC-HEADPHONEARN.htmlRead 8 October 2026The same FAQ states up to four hours of playback from a 15-minute charge. Codec, volume, and ANC state are not specified. The page also contains conflicting full-charge estimates of two and 2.5 hours. The existing 2.5-hour manual value is retained.

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

No1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 27 explicitly do not play while charging and unavailable in app. USB-C is charging only, not 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 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

Buttons1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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

Buttons1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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.

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 19 Action hold shortcut can be assigned to Spotify or battery-level announcement. No Immersive Audio shortcut borrowed from Ultra or 2nd Gen.

Not available

Wear detection

No8Reviewtomsguide.com/reviews/bose-quietcomfort-headphonesRead 7 October 2026Original 2023 review explicitly says touch controls, wear detection and Find My Headphones key features are missing. Current 2026 comparison separately confirms both generations lack 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

Siri2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Exact FAQ names phone native assistant Siri. Generic mobile voice control in manual does not establish built-in Alexa or Google Assistant service.

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

Padded10Retailer pagebhphotovideo.com/c/product/1785014-REG/bose_884367_0100_quietcomfort_wireless_over_ear_active.htmlRead 7 October 2026Premium Materials section explicitly underside of band uses soft protein-leather-covered foam. Original TechRadar review independently says headband well padded.12Reviewtechradar.com/audio/wireless-headphones/bose-quietcomfort-headphones-reviewRead 7 October 2026Exact original review design calls headband well-padded. Corroborates original Black retailer foam underside.

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

Protein leather-covered foam with steel reinforcement10Retailer pagebhphotovideo.com/c/product/1785014-REG/bose_884367_0100_quietcomfort_wireless_over_ear_active.htmlRead 7 October 2026Premium Materials section explicitly steel in headband and soft protein-leather-covered foam underside. Maker exact first-generation comparison independently confirms steel reinforcement.

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

Steel-reinforced headband9Maker product pagebose.co.uk/stories/bose-quiet-comfort-headphones-second-gen-vs-first-genRead 7 October 2026Exact maker first-generation comparison explicitly describes classic design with steel-reinforced headband. Value scoped to structural headband, not a claim of all-metal earcups.

Not available

Ear cup material

Not available

Not available

Ear pad material

Protein leather2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026

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

Replaceable ear pads

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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.

Clip1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 37 cushion removal releases tabs around inside rim, clip attachment.

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 cushions1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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

Bose app1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026

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, iOS1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 11 Apple App Store and Google Play listings.

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

Yes1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Manual update/troubleshooting section directs current Bose app updates.

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.

235.9g(8.3 oz)2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Exact original QuietComfort Headphone specification publishes 0.520 lb. Converted using 453.59237 g/lb and rounded to 0.1 g = 235.9 g. Source does not qualify cable inclusion or configuration. Claimed mass, not independent scale result. SoundGuys 240 g table is a secondary spec and does not override maker.

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.

Width157Height195.1Depth80mm(6.2 × 7.7 × 3.1 in)2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Exact current maker headphone dimensions 7.68 in H, 6.18 in W, 3.15 in D, converted to mm and rounded to 0.1 mm. Headband extension and fold setting are unspecified. Review 184 x 152 x 76 mm unfolded differs, so the maker is preferred.

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Certifications

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Hi-Res Audio

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Communication certifications

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FCC ID

A944373101Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Printed page 4 explicitly gives FCC ID A94437310 for the exact original QuietComfort manual.

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Other certifications

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In the box

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In the box

Bose QuietComfort Headphones, Carry case, USB-A to USB-C cable, 3.5 mm to 2.5 mm audio cable with microphone, Safety Sheet1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Page 10 illustrates the headphones, case and two cables. The current exact product page additionally names the Safety Sheet. No airline adapter or SC soft-case bundle is included.2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Current exact original QuietComfort product What is in the box list explicitly includes the Safety Sheet alongside headphones, carry case and two cables. The current manual identifies the analog cable as including a microphone.

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 (2023)

Type	Length (m)	Count
USB-A to USB-C charging cable	0.3048	1
2.5 mm to 3.5 mm audio cable with inline microphone	Not available	1

Source2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Maker box USB-A to C 12 in, exact conversion 0.3048 m. Analog cable length not given.

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.

Hard2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Exact product specifications states Product Case Material Leather (Hard). This applies standard model, not QuietComfort 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/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.html2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026Current maker page of the original QuietComfort. The page carries generic Immersive Audio app text that does not fit the original QC manual. No Immersive Audio or CustomTune claims are stored. The page has conflicting quick charge claims: the FAQ says 15 min for 4 h and the original QC comparison says 15 min for 2.5 h. The FAQ pair is stored from the separate first-generation page. The published 0.520 lb is stored as the converted maker claim of 235.9 g. The secondary 240 g table does not override the maker. No shell or headband materials are assigned from the generic Metal/Plastic/Leather product-material list. The adaptive call microphone wording does not identify DSP versus AI processing, so microphone_noise_reduction is omitted.

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/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.html2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026

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/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdf1Owner's manualassets.bosecreative.com/m/4579082941b4e207/original/885443_OG_QC-HEADPHONEARN_en.pdfRead 7 October 2026Current 46-page original QuietComfort owner guide AM885443-0010, 2026 revision. Cover says QuietComfort Headphones. Regulatory model 437310 is on page 6. Controls pages 12-21, battery 27, wired 30, storage 35 and cushion tabs 37 checked.

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.

1year2Maker product pagebose.com/p/noise-cancelling-headphones-quietcomfort/quietcomfort-acoustic-noise-cancelling-headphones/QC-HEADPHONEARN-BLK-WW.htmlRead 7 October 2026US product page Bose 1-Year Limited Warranty section explicitly states one year, included with all Bose products. This is the US scope, not a worldwide statutory-warranty claim.

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