Earbuds / Compare

Bose QuietComfort Earbuds II vs Sony WF-1000XM4

A

Product A: Bose

QuietComfort Earbuds II

74 of 166 known

Change Bose QuietComfort Earbuds II

Compare the Sony WF-1000XM4 with

Search earbuds

B

Product B: Sony

WF-1000XM4

85 of 166 known

Change Sony WF-1000XM4

Compare the Bose QuietComfort Earbuds II with

Search earbuds

All 166 fields

Every value links to where we found it.

Only differences

ABose QuietComfort Earbuds II

BSony WF-1000XM4

General

5 of 8 differ

Series

QuietComfort1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

1000X1Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 2026

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

870730-0010, 870730-00204Reviewsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026Spec box lists 870730-0010 for the Triple Black unit.9Retailer pagegreentoe.com/product/Bose_QuietComfort_Earbuds_II_Noise-Canceling_True_Wireless_In-Ear_Headphones__Triple_870730-0010Read 10 October 2026870730-0010 Triple Black. The Soapstone listing on the same retailer gives 870730-0020.

WF-1000XM4, YY29481Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 20263Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

GTIN / EAN

Not available

Not available

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

7 September 20221Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

8 June 20215Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

Status

Discontinued2Maker product pagesupport.bose.co.uk/product/bose-quietcomfort-earbuds-ii/01t8c00000OydAFAAZRead 10 October 2026The former Bose product page URL now redirects to the earbuds category, which no longer lists the QuietComfort Earbuds II. The support page is reported to give the sale period as 2022 to 2025.

Discontinued1Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 2026Current exact Japanese maker page explicitly marks production discontinued. Regional retail stock may remain.

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

Not available

Sony WF-1000XM313Reviewtechradar.com/news/sony-wf-1000xm4-take-the-crown-as-the-best-true-wireless-earbuds-of-2021Read 23 October 2026TechRadar's launch report calls the WF-1000XM4 the successor to the WF-1000XM3.14Reviewnotebookcheck.net/The-Sony-WF-1000XM4-launches-with-some-exciting-features-and-an-inflated-price-tag.544040.0.htmlRead 23 October 2026Notebookcheck calls the WF-1000XM4 the follow-up to the WF-1000XM3.

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 Ultra Earbuds11Reviewsoundguys.com/bose-quietcomfort-ultra-earphones-vs-bose-quietcomfort-earphones-ii-102644Read 23 October 2026SoundGuys calls the QuietComfort Ultra Earbuds a direct successor to the QuietComfort Earbuds II.

Sony WF-1000XM515Maker product pagesony.jp/headphone/products/WF-1000XM5/feature_2.htmlRead 23 October 2026Sony Japan's product page calls the WF-1000XM4 the previous model of the WF-1000XM5.

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

$2991Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026US MSRP 299 USD in the Bose release. US prices exclude sales tax.5Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 2026Tested at 299 USD, 280 GBP and 429 AUD at the September 2022 launch.

$279.995Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Original US launch MSRP, before local sales tax. Current prices and SoundGuys rounded 278 USD are not substituted. Ordering opened June 8. Actual retail date is separately corroborated by retrospective TechRadar release/availability text.

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.

Not available

US, JP1Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 2026Japanese exact product/store history and original US launch release separately establish JP and US. A translated support page alone does not establish another sales market.5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

ColoursiThe maker's own colour names

Triple Black, Soapstone1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Triple Black at launch. Soapstone announced for later in 2022.

Black, Platinum Silver1Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 2026Exact maker Black and Platinum Silver. US launch calls the second colour silver. No newer XM5/XM6 finish borrowed.

Segment

Music1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

Music5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

Design

1 of 4 differ

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

In-ear1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

In-ear5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Sealing foam tips and ergonomic ear-cavity design. No stem on exact maker photo and manual drawings.

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

Stem5Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 2026The design incorporates a stem that hosts the touch controls.

Stemless5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

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

Either bud6Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026February 2023 firmware lets either bud be used alone, even if the other is empty.7Reviewreviewed.com/headphones/content/bose-quietcomfort-ii-earbuds-reviewRead 10 October 2026Editor's note dated 16 February 2023 states a firmware update allows single-bud use with either the left or right bud.

Either bud3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Pages 19-20 either unit works alone with mobile-device assistant or no assistant. Google Assistant/Alexa assignments can restrict single-bud use to the playback-control earbud, initially the right unit. No independent simultaneous source playback inferred.

RGB lighting

Not available

Not available

Drivers and sound

9 of 17 differ

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

ABose QuietComfort Earbuds II

Type	Diameter (mm)
Dynamic	9.3

Source7Reviewreviewed.com/headphones/content/bose-quietcomfort-ii-earbuds-reviewRead 10 October 2026Specs list 9.3 mm transducers. Count per bud and role are not stated.

BSony WF-1000XM4

Type	Diameter (mm)	Count per earbud
Dynamic	6	1

Source2Maker product pagesony.jp/headphone/products/WF-1000XM4/spec.htmlRead 5 October 2026Exact maker table says closed dynamic and 6 mm. The separately opened original Crutchfield review explicitly states a single 6 mm dynamic driver in each earbud. Acoustic role is not explicitly published and remains omitted.12Reviewcrutchfield.com/S-L8b4RWU6LPi/learn/sony-wf-1000xm4-review.htmlRead 5 October 2026Original first-hand review by Jeff Miller, who auditioned this exact model for a week. Cleaner, more spacious sound paragraph and exploded-component caption explicitly say each earbud includes a single 6 mm dynamic driver. This is the physical per-earbud count. Its erroneous 13 h ANC-off battery claim is not used over exact Sony manual and launch data.

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

Dynamic9Retailer pagegreentoe.com/product/Bose_QuietComfort_Earbuds_II_Noise-Canceling_True_Wireless_In-Ear_Headphones__Triple_870730-0010Read 10 October 2026Retailer spec table lists driver type Dynamic.

Dynamic2Maker product pagesony.jp/headphone/products/WF-1000XM4/spec.htmlRead 5 October 2026

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

9.3mm=CalculatedFrom Drivers per bud

6mm=CalculatedFrom Drivers per bud

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

Not available

1=CalculatedFrom Drivers per bud

Diaphragm material

Not available

Not available

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

Not available

Max40kHz8Maker spec sheet (PDF)sony.com.my/microsite/MDR/SONY_WF1000XM4.pdfRead 5 October 2026Original maker 16-page model brochure, page 6 explicitly says drivers reproduce a full range of frequencies up to 40 kHz. This is an acoustic driver claim, separate from the Bluetooth transmission table. No acoustic lower cutoff, tolerance or test setup is supplied. Only the proved upper limit is stored. Full original PDF text read through web extraction. Direct file download returned 403.

Impedance

Not available

Not available

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

Not available

Not available

Sensitivity reference

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Yes1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026CustomTune plays a tone when the buds are placed in the ears. A microphone inside the bud measures the ear canal response and tailors the sound frequency profile within half a second.

Not available

Personalised soundiA profile from a hearing test or ear scan

Not available

Yes6Maker product pagesony.jp/headphone/products/WF-1000XM4/feature_1.htmlRead 5 October 2026Exact maker personal optimization explicitly uses individual ear shape and headphone characteristics. Fit test is separate acoustic-seal assessment.

Onboard EQ

Yes1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

Not available

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

36Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026

Not available

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

Bass Boost, Bass Reducer, Treble Boost, Treble Reducer6Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026Bass Boost, Bass Reducer, Treble Boost and Treble Reducer presets plus a three-band EQ.

Not available

Volume limit

Not available

Not available

Spatial audio

2 of 2 differ

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

Not available

360 Reality Audio6Maker product pagesony.jp/headphone/products/WF-1000XM4/feature_1.htmlRead 5 October 2026Exact maker 360 Reality Audio certified model. Ear-shape optimization through companion app and supported service/content required. No head tracking inferred.

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

No8Reviewtomsguide.com/reviews/bose-quietcomfort-earbuds-2Read 10 October 2026The review states 3D (spatial) audio is not available.

Not available

Noise cancelling

7 of 11 differ

Active noise cancelling

Yes1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

Yes5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

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

Hybrid1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Four microphones per bud, one inside and three outside, feed the ANC system. Interior and exterior microphones together make this hybrid.

Hybrid5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

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

81Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Bose states four microphones in each bud sense and measure unwanted noise for ANC. Four per bud, eight across the pair. Whether all are also used for calls is not stated.

45Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Original release explicitly two noise-sensing microphones per earbud, one feedforward and one feedback, hence four across pair.

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

Yes1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026CustomTune measures the ear canal response each time the buds are placed in the ears, then tunes noise cancellation. It continuously adapts to changing noise in the environment.

Not available

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

106Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026Custom noise-cancelling modes use a ten-point scale for the ANC level. Stored as 10.

Not available

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

Not available

Not available

Transparency mode

Yes1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

Yes5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

Adjustable transparency

Not available

Yes7Maker product pagesony.jp/headphone/products/WF-1000XM4/feature_5.htmlRead 5 October 2026Exact maker ambient volume slider and Voice Focus. Japanese page calls 21 steps, while original Malaysian sheet says 20 slider levels. No strength-level count stored. Activity-based profile switching does not prove ANC continuously adapting or blending ANC/transparency.

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

Yes1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Aware Mode with ActiveSense. ActiveSense applies noise cancellation only while loud sounds last. It blends cancellation into transparency and is not an activity-based switch.

Not available

Conversation detection

Not available

Yes5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

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

Not available

Yes5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Automatic Wind Noise Reduction is selectable processing that detects wind and compensates. Not a physical mesh claim.

Measured

4 of 23 differ

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

SoundGuys finds the default response has under-emphasized mids and over-emphasized sub-bass. Bass is much stronger than on any previous Bose headset.3Measurementsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026Written objective assessment. Out of the box under-emphasized mids and over-emphasized sub-bass against the SoundGuys target.

The measured default response emphasizes bass and lower midrange. Output above about 2 kHz is reduced relative to the review target.10Reviewsoundguys.com/sony-wf-1000xm4-review-53454Read 5 October 2026Exact lab curve discussion, not plotted coordinate estimates. Fixture/target revision, firmware and codec unstated.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

SoundGuys finds microphone quality standard. It rejects faraway noise decently and handles wind noise poorly.3Measurementsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026Lab and demo recordings in ideal, office, street and windy conditions. Standard quality, decent rejection of faraway noise, weak wind handling.

Published quiet, office and wind recordings show usable call pickup in quiet. Background office noise and wind reduce voice clarity.10Reviewsoundguys.com/sony-wf-1000xm4-review-53454Read 5 October 2026Exact ideal/office/wind demos. Review comments on AAC quality but does not explicitly label every sample codec. No sample codec or quantitative noise-handling score inferred.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

ABose QuietComfort Earbuds II

Hours (h)
7.25

Source3Measurementsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026SoundGuys loop test of constant real music playback peaking at 75 dB SPL lasted 7 h 15 min on one charge. Stored as 7.25 h. Noise-control mode, firmware and codec are not stated. The earbuds cannot switch ANC off, so the row sets no ANC flag.

BSony WF-1000XM4

Hours (h)
7.72

Source10Reviewsoundguys.com/sony-wf-1000xm4-review-53454Read 5 October 2026Exact review reports 7 h 43 min per earbud charge. ANC state, codec, original test firmware and playback level are not explicit in that paragraph and remain omitted. No claimed case total or later battery-aging reports converted into lab data.

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

7.25h=CalculatedFrom Battery life (measured)

7.72h=CalculatedFrom Battery life (measured)

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Microphones and calls

3 of 7 differ

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

Not available

45Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Speak-to-Chat paragraph explicitly combines four microphones for Precise Voice Pickup. Bone-conduction sensors are excluded from physical microphone counts. Total physical microphone count is not inferred from overlap between call and ANC roles.

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

81Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Four microphones in each bud, one on the inside and three on the outside. Eight across the pair.5Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 20267Reviewreviewed.com/headphones/content/bose-quietcomfort-ii-earbuds-reviewRead 10 October 2026

Not available

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

Not available

Yes5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

Mic noise reduction

DSP1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Bose cites improved voice pickup from an updated noise removal algorithm. Stored as DSP. No AI claim is made.

DSP5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Precise Voice Pickup uses beamforming and advanced audio signal processing. DSEE AI is music upscaling, not proof of AI voice noise reduction.

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

Not available

Not available

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

Not available

Not available

SidetoneiHear your own voice in calls

Yes6Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Pages 86-92 call chapters explicitly hear own voice through microphones. No adjustable sidetone level claimed.

Connectivity

8 of 18 differ

Chip

Qualcomm S5 Audio SoC10Press articleaudioxpress.com/news/bose-to-launch-new-wireless-earbuds-powered-by-qualcomm-s5-audio-socRead 10 October 2026Qualcomm confirmed at IFA 2022 that the new Bose QuietComfort Earbuds II are powered by the Qualcomm S5 Audio SoC. Bose does not name the chip in its launch release.

Sony Integrated Processor V15Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

Connections

Bluetooth1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

Bluetooth3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

Bluetooth

5.31Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

5.22Maker product pagesony.jp/headphone/products/WF-1000XM4/spec.htmlRead 5 October 2026

Bluetooth codecs

SBC, AAC4Reviewsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026Only SBC and AAC are available. The planned Snapdragon Sound aptX update announced in 2022 is not confirmed as released.5Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 20266Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 20268Reviewtomsguide.com/reviews/bose-quietcomfort-earbuds-2Read 10 October 2026

SBC, AAC, LDAC2Maker product pagesony.jp/headphone/products/WF-1000XM4/spec.htmlRead 5 October 2026Published music codecs only. The SoundGuys review incorrectly infers LE Audio from Bluetooth 5.2, which is not used. A2DP transmission bandwidth does not establish acoustic response or maximum accepted input bit depth.

Bluetooth profiles

A2DP, HFP9Retailer pagegreentoe.com/product/Bose_QuietComfort_Earbuds_II_Noise-Canceling_True_Wireless_In-Ear_Headphones__Triple_870730-0010Read 10 October 2026

A2DP, AVRCP, HFP, HSP2Maker product pagesony.jp/headphone/products/WF-1000XM4/spec.htmlRead 5 October 2026

LE Audio

Not available

Not available

Auracast

Not available

Not available

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

No4Reviewsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 20265Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 20266Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Pages 69-70 current manual explicitly simultaneous two-device connections with app toggle. It is a later software feature, not a launch claim. One audio stream at a time. LDAC availability during multipoint remains unproved.

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

Not available

23Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

Multipoint with LDACiMany buds turn multipoint off on LDAC

Not available

Not available

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

Not available

Not available

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Not available

Google Fast Pair, Microsoft Swift Pair5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Original release explicitly Google Fast Pair Android and Microsoft Swift Pair Windows 10. Manual requires Windows 10 version 1803 or later for Swift Pair.

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

9.1m9Retailer pagegreentoe.com/product/Bose_QuietComfort_Earbuds_II_Noise-Canceling_True_Wireless_In-Ear_Headphones__Triple_870730-0010Read 10 October 2026Spec table lists 30 ft / 9.1 m over Bluetooth. Bose regional product pages are no longer online. Tom's Guide states up to 100 feet, which is not stored.

10m2Maker product pagesony.jp/headphone/products/WF-1000XM4/spec.htmlRead 5 October 2026Manual page 143 specifies approximate 10 m line of sight, with surroundings affecting range. No measured range implied.

Wireless receiveri2.4 GHz dongle

Not available

Not available

Receiver connector

Not available

Not available

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

Not available

Not available

Latency

None of 3 known

Low latency mode

Not available

Not available

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

Not available

Compatibility

3 of 4 differ

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

Android, iOS1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Bose states compatibility with both Apple and Android devices.

Android, iOS, Windows, macOS3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

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

ABose QuietComfort Earbuds II

Platform	Connection
Android	Bluetooth
iOS	Bluetooth

Source1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

BSony WF-1000XM4

Platform	Connection	Microphone works
Android	Bluetooth	Yes
iOS	Bluetooth	Yes
Windows	Bluetooth	Yes
macOS	Bluetooth	Yes

Source3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Exact Android, iPhone, Windows 10/8.1 and Mac setup chapters. Page 93 video-call instructions explicitly select HFP/HSP calling connections for speakers and microphone. No gaming-console support inferred.

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

ABose QuietComfort Earbuds II

Not available

BSony WF-1000XM4

Feature	Needs
360 Reality Audio personalization	Compatible Android/iPhone, companion app ear-shape analysis, supported content and a compatible streaming service. Subscription and regional availability may apply.
LDAC	Compatible LDAC source and Priority on sound quality in companion app. iPhone Bluetooth music uses AAC instead.
Two-device multipoint	Updated firmware and companion app Connect to 2 devices simultaneously enabled. It routes one audio stream at a time.

Source9Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 2026Original launch footnotes 2, 4 and 5 and current exact manual pages 69-70/84/106 independently establish each requirement. Later app name changes do not imply a later hardware model.

Official licence

Not available

Not available

Battery and charging

9 of 13 differ

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

Not available

Not available

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

Not available

Not available

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

ABose QuietComfort Earbuds II

Mode	Includes case recharges	Hours (h)
ANC on	No	6
ANC on	Yes	24

Source1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Up to 6 hours per charge. The case adds three further charges for 24 hours in total. Bose release does not name the noise-control mode. What Hi-Fi? and B&H label the 6 hours as Bluetooth with ANC. The earbuds cannot switch ANC off.5Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 2026Tech specs list 6 hours (BT + ANC) and 24 hours including the charging case.

BSony WF-1000XM4

Mode	Codec	Includes case recharges	Hours (h)
ANC on	LDAC	No	5
ANC off	LDAC	No	6
Transparency	LDAC	No	4.5
ANC on	AAC	No	8
ANC off	AAC	No	12
Transparency	AAC	No	8
ANC on	SBC	No	7.5
ANC off	SBC	No	11
Transparency	SBC	No	7
ANC on	AAC	Yes	24
ANC off	AAC	Yes	36
Call	Not available	No	6

Source1Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 20263Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 20264Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Pages 27-28 music rows with DSEE Extreme OFF. ANC off also means Ambient Sound off. DSEE AUTO shortens LDAC ANC/on,off,ambient to 3.5/4/3.5 h, AAC to 6/8/6 h and SBC to 5.5/7/5.5 h. AUTO alternatives are noted rather than merged into indistinguishable rows. Volume and firmware unstated. Japanese maker footnote explicitly supplies AAC and DSEE/EQ off for case-inclusive 24 h ANC on and 36 h off. Case totals include earbuds. Call maximum 6 h with ANC/Ambient off and codec unstated. Other call modes: 5.5 h ANC on, 5 h Ambient on. No unsupported call ANC column added.

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

6h=CalculatedFrom Claimed battery life

12h=CalculatedFrom Claimed battery life

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

6h=CalculatedFrom Claimed battery life

8h=CalculatedFrom Claimed battery life

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

Not available

12h=CalculatedFrom Claimed battery life

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

24h=CalculatedFrom Claimed battery life

36h=CalculatedFrom Claimed battery life

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

24h=CalculatedFrom Claimed battery life

24h=CalculatedFrom Claimed battery life

Talk time (claimed)

Not available

6h=CalculatedFrom Claimed battery life

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

60min1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Bose states the case fully charges the buds in one hour.

90min3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Manual page 24 defines empty-to-full charging. Earbuds fully charge in approximately 1.5 h from a previously charged case. Approximately 3 h refers to charging both headset and case together over USB. Page 25 recommends ambient 15 to 35 C. Page 143 corroborates the technical durations. These are claims, not measured values.

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

Not available

Not available

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

20min1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Bose states a quick 20-minute charge gives up to two hours of playback.

5min3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

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

2h1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Earbuds-only playback of up to 2 hours after 20 minutes in the case.

1h1Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 20263Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Page 27 about 1 h playback after 5 min charging. Exact maker Japanese page footnote qualifies AAC, ANC on, DSEE/EQ off and other features at default.

Charging case

2 of 10 differ

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

Not available

Not available

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

Not available

Not available

Case charging port

USB-C1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

USB-C3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

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

180min1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Bose states the case fully recharges in three hours via USB-C.

180min3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Manual page 24 approximately 3 h empty-to-full USB charging with earbuds installed and charging simultaneously. Page 143 separately labels charging case approximately 3 h. No faster empty-case-only or Qi duration inferred. Recommended ambient 15 to 35 C on page 25.

Wireless charging

No4Reviewsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 20265Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 20266Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026

Yes5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

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

Not available

Qi5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026

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

Not available

Not available

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

Not available

Not available

Screen on case

Not available

Not available

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

Not available

Not available

Controls

4 of 5 differ

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

Touch, Swipe1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 20266Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026

Touch, Voice commands3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

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

Swipe6Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 20267Reviewreviewed.com/headphones/content/bose-quietcomfort-ii-earbuds-reviewRead 10 October 2026

Touch3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Pages 21-22 permit assigning playback volume adjustment to touch sensors. Factory touch functions and assistant assignment affect availability.

Gestures

Single tap: play or pause, Double tap: next track, Triple tap: previous track, Swipe up or down: volume, Touch and hold: noise-cancelling mode or voice assistant (assignable)6Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026Single, double and triple tap and swipe up or down are fixed. Long press on either bud is assignable to noise-cancelling mode switching or the voice assistant.

Single tap, Double tap, Triple tap, Touch and hold3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

Remappable controls

Yes6Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 20268Reviewtomsguide.com/reviews/bose-quietcomfort-earbuds-2Read 10 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

Voice assistant

Google Assistant, Siri, Bixby8Reviewtomsguide.com/reviews/bose-quietcomfort-earbuds-2Read 10 October 2026Google Assistant, Siri and Bixby all work with the earbuds.

Google Assistant, Amazon Alexa, Siri3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 20265Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Google Assistant/Alexa explicitly original launch, with supported language/region and app setup requirements. Siri activation is touch-controlled in manual pages 104-105, not hands-free Hey Siri.

Sensors and health

2 of 9 differ

In-ear detection

Yes6Reviewexpertreviews.co.uk/bose/1417760/bose-quietcomfort-earbuds-ii-reviewRead 10 October 2026The app can pause playback when a bud is removed and answer calls when a bud is inserted.7Reviewreviewed.com/headphones/content/bose-quietcomfort-ii-earbuds-reviewRead 10 October 20269Retailer pagegreentoe.com/product/Bose_QuietComfort_Earbuds_II_Noise-Canceling_True_Wireless_In-Ear_Headphones__Triple_870730-0010Read 10 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Pages 17-18 explicitly IR sensing and pause/resume on removing/replacing either earbud.

Sensors

Not available

Infrared wearing sensor, Bone conduction voice sensor3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026IR wearing sensor explicit in manual. Dedicated bone-conduction speech pickup sensor separately explicit in original maker release, not a speech-detecting accelerometer.

Heart rate sensor

Not available

Not available

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

Not available

Not available

Hearing aid featureiAmplification for mild to moderate hearing loss

Not available

Not available

Medical clearances

Not available

Not available

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

Not available

Not available

Hearing protectioniLimits sudden loud sounds

Yes1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026ActiveSense reduces loud disruptions in Aware Mode for as long as they last.

Not available

Health features

Not available

Not available

Fit and durability

2 of 7 differ

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

S, M, L1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Fit Kit supplies three sizes of ear tips and three sizes of stability bands. Sizes S, M and L from the B&H box contents.5Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 2026Three sizes of ear tips and three stability bands as standard.

S, M, L3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

Ear tip materials

Silicone1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026

Foam3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Page 9 and maintenance chapters explicitly polyurethane foam. No silicone tip material inferred from siblings.

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

Stability bands1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026Separate stability bands that hug the contour of the ear, with an umbrella-shaped silicone ear tip.5Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 2026

Not available

Ear tip fit test

Yes1Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 20265Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 2026

Yes5Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Original app measures acoustic seal with supplied Noise Isolation tips. This is not a hearing assessment.

Dust and water rating, buds

IPX41Press releasebose.com/pressroom/quietcomfort-earbuds-iiRead 10 October 2026IPX4 rating for sweat and water resistance.4Reviewsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026

IPX43Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 20265Press releasesony.mediaroom.com/2021-06-08-Sony-Electronics-Unveils-the-WF-1000XM4-Truly-Wireless-Headphones,-Setting-a-New-Standard-for-Noise-CancellationRead 5 October 2026Earbuds only. Launch footnote 12 excludes sound conduit, vents and two microphone holes per unit from protection scope and states case is not water resistant.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

2 of 6 differ

Companion app

Bose Music4Reviewsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026Bose Music app for iOS and Android, used for updates, EQ and ANC settings.

Sony | Sound Connect1Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 2026Current maker feature 5 names Sony Sound Connect. Original manual and launch use its former name Sony | Headphones Connect.7Maker product pagesony.jp/headphone/products/WF-1000XM4/feature_5.htmlRead 5 October 2026Exact current maker feature page names Sony Sound Connect. This replaces the former Sony | Headphones Connect name used in the original manual.

App platforms

Android, iOS4Reviewsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026

Android, iOS3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Page 108 explicitly Google Play and Apple App Store. No desktop companion app inferred.

User firmware updates

Yes4Reviewsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026

Finding network

Not available

Last location in the app8Maker spec sheet (PDF)sony.com.my/microsite/MDR/SONY_WF1000XM4.pdfRead 5 October 2026Page 10 explicitly Google Find My Device last known smartphone location and nearby tone. No crowd-based offline Find Hub network or UWB precision-finding claim.

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Not available

Dimensions and weight

2 of 4 differ

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

6.2g(0.2 oz)4Reviewsoundguys.com/bose-quietcomfort-earbuds-ii-review-78772Read 10 October 2026Spec box lists 6.24 g per earbud. What Hi-Fi? and Reviewed state 6.2 g. Stored 6.2 g.5Reviewwhathifi.com/reviews/bose-quietcomfort-earbuds-iiRead 10 October 2026Tech specs list 6.2 g each.7Reviewreviewed.com/headphones/content/bose-quietcomfort-ii-earbuds-reviewRead 10 October 2026Specs list 6.2 grams per earbud.

7.3g(0.3 oz)2Maker product pagesony.jp/headphone/products/WF-1000XM4/spec.htmlRead 5 October 2026Approximate mass of one earbud, corroborated by manual page 143 as 7.3 g x2 with M tips attached.

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

Not available

Not available

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

59.8g(2.1 oz)7Reviewreviewed.com/headphones/content/bose-quietcomfort-ii-earbuds-reviewRead 10 October 2026Specs list 59.8 grams for the charging case. Tom's Guide lists 2.1 oz.

41g(1.4 oz)2Maker product pagesony.jp/headphone/products/WF-1000XM4/spec.htmlRead 5 October 2026Approximate empty charging-case mass, separately listed on manual page 143.

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

Not available

Not available

Certifications

2 of 3 differ

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

Not available

Hi-Res Audio Wireless6Maker product pagesony.jp/headphone/products/WF-1000XM4/feature_1.htmlRead 5 October 2026Hi-Res Audio Wireless logo on exact maker page and LDAC conditions. DSEE upscaling to 96 kHz/24 bit and V1 24-bit internal processing do not establish maximum accepted digital input resolution.

Communication certifications

Not available

Not available

FCC IDs

Not available

Not available

Other certifications

Not available

360 Reality Audio certified6Maker product pagesony.jp/headphone/products/WF-1000XM4/feature_1.htmlRead 5 October 2026

In the box

2 of 2 differ

In the box

Bose QuietComfort Earbuds II, Charging case, USB-C to USB-A cable, 3 pairs of silicone ear tips (S, M, L), 3 pairs of stability bands (S, M, L)7Reviewreviewed.com/headphones/content/bose-quietcomfort-ii-earbuds-reviewRead 10 October 20269Retailer pagegreentoe.com/product/Bose_QuietComfort_Earbuds_II_Noise-Canceling_True_Wireless_In-Ear_Headphones__Triple_870730-0010Read 10 October 2026

WF-1000XM4 earbuds, Charging case, Noise isolation ear tips (S, M, L pairs), USB-A to USB-C cable, Documentation1Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 20263Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Page 8 publishes cable, case and three pairs of EP-NI1000 tips. M pair fitted, not an extra pair. Japanese maker page explicitly includes instruction manual and warranty documentation.

Cables included

ABose QuietComfort Earbuds II

Type	Count
USB-C to USB-A charging cable	1

Source7Reviewreviewed.com/headphones/content/bose-quietcomfort-ii-earbuds-reviewRead 10 October 2026A 12-inch USB-C to USB-A charge cable is included.

BSony WF-1000XM4

Type	Length (m)	Count
USB-A to USB-C cable	0.2	1

Source3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Page 8 states one supplied cable, approximately 20 cm.

Links

Not compared

Product page

support.bose.co.uk/product/bose-quietcomfort-earbuds-ii/01t8c00000OydAFAAZ2Maker product pagesupport.bose.co.uk/product/bose-quietcomfort-earbuds-ii/01t8c00000OydAFAAZRead 10 October 2026Bose support page for the product. Its specification content is script-rendered and could not be read, so no specification is cited from it.

www.sony.jp/headphone/products/WF-1000XM41Maker product pagesony.jp/headphone/products/WF-1000XM4Read 5 October 2026

Spec sheet

Not available

www.sony.jp/headphone/products/WF-1000XM4/spec.html2Maker product pagesony.jp/headphone/products/WF-1000XM4/spec.htmlRead 5 October 2026

Manual

Not available

helpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdf3Owner's manualhelpguide.sony.net/mdr/wf1000xm4/v1/en/print.pdfRead 5 October 2026Original exact YY2948 Help Guide, 144 pages, revision 5-027-983-11(6). Technical tables, package, controls, charging, calls and updated multipoint chapters read. Later software capabilities are qualified separately from launch.

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

Not available

Not available

Warranty

1 of 1 differ

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.

1year9Retailer pagegreentoe.com/product/Bose_QuietComfort_Earbuds_II_Noise-Canceling_True_Wireless_In-Ear_Headphones__Triple_870730-0010Read 10 October 2026Limited 1-Year Warranty on the US listing. A Belgian retailer lists 2 years for its market.

Not available

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