Earbuds / Compare

Samsung Galaxy Buds2 vs Sony WF-1000XM4

A

Product A: Samsung

Galaxy Buds2

79 of 166 known

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B

Product B: Sony

WF-1000XM4

85 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

ASamsung Galaxy Buds2

BSony WF-1000XM4

General

6 of 8 differ

Series

Galaxy Buds2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 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.

SM-R177NZKAEUA, SM-R1772Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Exact 2021 UK Graphite SM-R177NZKAEUA. Shared SM-R177 is established by its original EU manual. Buds2 Pro, Buds3 and FE are separate models.

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.

11 August 20213Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 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

Not available

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.

Samsung Galaxy Buds+14Measurementrtings.com/headphones/reviews/samsung/galaxy-buds-plus-truly-wirelessRead 23 October 2026A notice on the RTINGS Galaxy Buds+ review says these headphones were replaced by the Samsung Galaxy Buds2.15Measurementrtings.com/headphones/reviews/samsung/galaxy-buds2-truly-wirelessRead 23 October 2026RTINGS says the Galaxy Buds2 are the next generation of the Galaxy Buds+.

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.

Samsung Galaxy Buds316Measurementrtings.com/headphones/reviews/samsung/galaxy-buds3-truly-wirelessRead 23 October 2026RTINGS says the Galaxy Buds3 are the third generation of Galaxy earbuds, following the Galaxy Buds2.

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.

$149.994Press releasenews.samsung.com/us/galaxy-z-fold3-5g-galaxy-z-flip3-5g-unpacked-2021-next-mobile-innovationRead 5 October 2026Original US maker pricing gives 149.99 USD for standard Buds2. US family launch price, not a conversion of UK pricing.

$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.

GB2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

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

Graphite, White, Olive, Lavender, Onyx2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Four original finishes plus current Onyx on the maker page. Same generation. Reference photo remains Graphite.

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

Music2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 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

0 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-ear2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 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.

Stemless2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

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 bud5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Page 18 describes mono with one connected bud. Page 36 accessibility enables ANC with one earbud despite default both-bud restriction.

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

7 of 17 differ

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

ASamsung Galaxy Buds2

Type	Role	Count per earbud
Dynamic	Woofer	1
Dynamic	Tweeter	1

Source2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20263Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026Two-way woofer and tweeter. Current maker page explicitly says dynamic. Teardown confirms two separate dynamic transducers. Diameter unstated.11Review52audio.com/archives/93500.htmlRead 5 October 2026Separate woofer and tweeter dynamic transducers. J1617G module length about 6.2 mm and thickness 5.89 mm are not circular driver diameters, so not stored as size_mm.

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.

Not available

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.

Not available

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.

2=CalculatedFrom Drivers per bud

1=CalculatedFrom Drivers per bud

Diaphragm material

Not available

Not available

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

Not available

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

Not available

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

Not available

Not available

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

Not available

Not available

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

Normal, Bass boost, Soft, Dynamic, Clear, Treble boost12Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Six named presets. Source explicitly excludes custom EQ. Noise modes and fit test are separate.

Not available

Volume limit

Not available

Not available

Spatial audio

2 of 2 differ

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

Samsung 360 Audio with Dolby Head Tracking2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20266Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026

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.

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Current exact maker page names Dolby Head Tracking with 360 Audio. One UI 3.1 or later, supported apps and content. Added in 2022, not a launch feature.6Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026Model-specific R177XXU0AVC8 dated April 4, 2022 adds 360 Audio on One UI 3.1 or higher. Current product page separately proves head tracking.

Not available

Noise cancelling

1 of 11 differ

Active noise cancelling

Yes1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 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.

Hybrid11Review52audio.com/archives/93500.htmlRead 5 October 2026Actual external feedforward and internal feedback microphone roles explicitly identified. Two ANC microphones per bud means four across the pair. Separate dedicated call mic and bone sensor are not added to ANC count.

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.

411Review52audio.com/archives/93500.htmlRead 5 October 2026

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.

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Transparency mode

Yes1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 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

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Exact original manual documents adjustment of ambient sound volume. These are transparency settings, not ANC strength levels.

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.

Not available

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.

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Documented low-protrusion physical design reduces wind disruption. This is separate from selectable ANC processing.

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

Measured response has elevated sub-bass relative to the reviewer target. Bass can mask some midrange detail.12Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Exact published lab curve and prose. Firmware, codec, target revision and original fixture are unstated. No graph points converted into numeric dB. Numeric measured runtime is omitted because this review and FE comparison give 5 hours 3 minutes while the Pro comparison gives 5 hours 9 minutes with ANC, without resolving the difference.13Reviewsoundguys.com/samsung-galaxy-buds-pro-vs-samsung-galaxy-buds-2-61210Read 5 October 2026Exact Buds2 curve and default-response discussion corroborate relative bass emphasis and midrange masking. Battery paragraph gives 5 hours 9 minutes with ANC at constant 75 dB SPL, conflicting with standalone review and FE comparison at 5 hours 3 minutes. Numeric measured runtime remains omitted. Sibling Buds Pro attenuation and driver details are excluded.

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

Published ideal, office and windy microphone demos. Review reports keyboard noise pickup and weak wind handling.12Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Only ideal, office and windy demos. Exact recording host, firmware and codec are unstated. No subjective votes converted into voice score.

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.

ASamsung Galaxy Buds2

Not available

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.

Not available

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

4 of 7 differ

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

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.

61Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Exact UK Graphite model row gives six physical microphones. Voice Pickup Unit is a vibration sensor, not an extra microphone. Voice-specific physical count is omitted because exact participation of the inner ANC capsule in calls is not established.

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.

Yes11Review52audio.com/archives/93500.htmlRead 5 October 2026Actual ST LIS25BATR dedicated speech-vibration sensor. Teardown explicitly describes bone-vibration voice pickup and call-noise suppression, not merely an unspecified accelerometer.

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

AI2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Maker calls its call noise filtering machine-learning based. Marketing three-mic call-system wording does not establish every capsule participating in call pickup.

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

Not available

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

BES2500ZP11Review52audio.com/archives/93500.htmlRead 5 October 2026Exact SM-R177 teardown identifies BES2500ZP earbud audio SoC. Case MUA01 and earbud power-management MUB01 are separate. Generic chip LC3 support does not prove shipping earbud LE Audio.

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

Bluetooth5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026

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

Bluetooth

5.21Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

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

Bluetooth codecs

SBC, AAC, Samsung Scalable Codec3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026Original table explicitly Scalable, AAC and SBC. Not the later 24-bit Samsung Seamless Codec. No LC3, LE Audio or Auracast inferred from Bluetooth 5.2 or chipset capability.

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, AVRCP, HFP1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 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.

No7Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026Maker explicitly states earbuds cannot connect to multiple devices simultaneously. Auto Switch is same-account routing.

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

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20265Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Pages 33 and 35 automatic call switching and seamless connection. Account route is separate from concurrent generic multipoint.

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)

Not available

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

1 of 3 differ

Low latency mode

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Page 36 Gaming mode in Labs requires Samsung Android device. No specific milliseconds stated.7Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026

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, iOS, Windows, Other7Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026

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.

ASamsung Galaxy Buds2

Platform	Connection	Microphone works
Android	Bluetooth	Yes
iOS	Bluetooth	Yes
Windows	Bluetooth	Not available
Other	Bluetooth	Not available

Source7Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026Exact supported-model sections include Buds2. Android and iOS support calls and music. Windows PC pairing and Samsung TV and watch audio routes are documented. Other means compatible Samsung TV or Galaxy watch. PC/TV microphone support is unstated. No gaming console route inferred.

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.

ASamsung Galaxy Buds2

Feature	Needs
Galaxy Wearable app	Android 7.0 or later and at least 1.5 GB RAM for original Buds2 app support. No iOS companion app support.
Samsung connection popup	Samsung Android 8.0 or later with SmartThings. This is not proof of Google Fast Pair or Microsoft Swift Pair.
Auto Switch	Galaxy phones or tablets with One UI 3.1 or later and same Samsung Account. Supported Galaxy Watch4 or later route. App and device support varies.
360 Audio and head tracking	Current earbud firmware and Samsung Galaxy phone or tablet with One UI 3.1 or later. App and content support varies. Added after launch.
Gaming mode	Galaxy Wearable Labs and compatible Samsung Android host. No numeric latency promise.
Galaxy AI translation	Paired compatible Samsung Galaxy phone processes Live Translate or Interpreter. Maker names S24 family as of February 2024. Account, software, language and network conditions apply.

Source2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20265Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20266Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026

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.

61mAh1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Maker typical capacity is 61 mAh per bud. Exact teardown cell is rated 58 mAh. These are different capacity scopes.3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026

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.

ASamsung Galaxy Buds2

Mode	Includes case recharges	Hours (h)
ANC on	No	5
ANC on	Yes	20
ANC off	No	7.5
ANC off	Yes	29
Call	No	3.5
Call	Yes	13
Call	Yes	14

Source2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Five hours with ANC plus 15 additional hours from the case means 20 total, not 15 total. Preproduction Buds2 on a recently released Galaxy smartphone at default ANC-on settings. Exact host model, codec, volume and firmware are unstated.3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026Music 5/20 hours ANC on and 7.5/29 ANC off. Calls 3.5 hours per charge in both ANC states. Case-inclusive call totals are 13 with ANC and 14 without ANC. The call table mode does not encode ANC, so conditions are kept here.

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.

7.5h=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.

5h=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.

7.5h=CalculatedFrom Claimed battery life

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.

29h=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.

20h=CalculatedFrom Claimed battery life

24h=CalculatedFrom Claimed battery life

Talk time (claimed)

3.5h=CalculatedFrom Claimed battery life

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.

Not available

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.

5min3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026

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.

1h3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026One hour after five minutes of charging starts with earbuds below 30 percent. Original footnote explicitly measures playback with ANC off. Usage and recharge count affect duration. Codec, volume, host and firmware are unstated.

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.

472mAh1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Maker typical case-cell capacity is 472 mAh. Teardown also prints 472 mAh on the case battery label. Neither is USB output capacity.3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 202611Review52audio.com/archives/93500.htmlRead 5 October 2026Exact case cell EB-BR190ABY label: 472 mAh and 1.81 Wh at 3.85 V. Reviewer calls printed capacity rated while maker calls the same numeric case capacity typical. No conversion or USB output-capacity substitution.

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-C5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 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.

Not available

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

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 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.

Qi3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026

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

2 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, Voice commands5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 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.

Touch5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 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, double and triple tap, Touch and hold, Double tap earbud edge in Labs5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20266Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026R177XXU0AUH2 dated August 24, 2021 adds double-tap earbud edge in Labs, ambient during calls and one-earbud noise control. Not copied from a Pro or FE guide.

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

Remappable controls

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Pages 24 and 25 touch-and-hold can select noise control, Bixby or volume. Volume remaps both sides together. Page 29 repeats left down and right up.

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

Voice assistant

Bixby5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Page 27 touch-and-hold or Hi Bixby on compatible Bixby-enabled host. Language and region availability vary.

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

1 of 9 differ

In-ear detection

Yes12Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Review says removal pauses playback but reinsertion does not automatically resume. User must tap. In-ear detection does not guarantee AirPods-like resume.

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

Accelerometer, Gyroscope, Hall sensor, Proximity sensor, Touch sensor, Voice Pickup Unit1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

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

Not available

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, L1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

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

Ear tip materials

Silicone2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 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.

Not available

Not available

Ear tip fit test

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20265Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 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

IPX212Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Exact Buds2 earbuds IPX2. No charging-case IP rating inferred.

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

4 of 6 differ

Companion app

Galaxy Wearable (Android) and Galaxy Buds (Windows)5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20268Maker product pagesamsung.com/us/support/answer/ANS10001316Read 5 October 2026Current exact eligibility includes Buds2 in Galaxy Buds PC app from Microsoft Store. Original Galaxy Wearable Android route and Windows route are distinct. Older Buds Manager for Mac belongs to different models.

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, Windows5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20267Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026Buds2 is excluded from the iOS Buds app despite iPhone Bluetooth audio and call support.8Maker product pagesamsung.com/us/support/answer/ANS10001316Read 5 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

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20266Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026Exact SM-R177 firmware history lists releases through July 24, 2025. No future update promise, LC3 or Auracast feature inferred.8Maker product pagesamsung.com/us/support/answer/ANS10001316Read 5 October 2026Current manufacturer instructions explicitly update Buds2 through the Windows PC app. No iOS updater or future support promise.

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

Finding network

Samsung Find9Maker product pagesamsung.com/uk/apps/smartthings-findRead 5 October 2026Offline-finding list explicitly includes Buds2. Samsung Account, compatible Galaxy host and enabled offline finding required. Buds must have power. No UWB precision-finding capability inferred.

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

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Phone-processed Galaxy AI Live Translate and Interpreter. Current page names S24 family as of February 2024, account and language requirements. Live Translate requires network and Samsung Phone app.

Not available

Dimensions and weight

4 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.

5g(0.2 oz)1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

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.

Width17Height20.9Depth21.1mm(0.7 × 0.8 × 0.8 in)1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Exact HxWxD labels retained. One earbud, not pair.

Not available

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

41.2g(1.5 oz)1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

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.

Width50Height27.8Depth50.2mm(2 × 1.1 × 2 in)1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Exact HxWxD labels retained. Case mass is empty-case mass, independently confirmed by teardown.

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

Galaxy Buds2 earbuds, Charging case, Ear tips in S, M and L, Quick Start Guide, USB-C charging cable1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 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

ASamsung Galaxy Buds2

Type	Count
USB-C charging cable	1

Source5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Page 9 names supplied USB Type-C cable and separately sold chargers. Exact UK API lists one USB cable. Host-end connector and length are unstated, so CN teardown package details are not borrowed.

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

www.samsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeua2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

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

Spec sheet

www.samsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5g3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026Original maker Product Specifications table read in full. No standalone model-specific maker PDF datasheet found.

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

Manual

org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Original EU English August 2021 Rev.1.0, 45-page PDF with numbered pages 1 to 44 and copyright page. Charging layout page 7 visually inspected. English section of the separately linked September 2021 Hearable Safety Information was also read. Generic safety text does not prove a model-specific FCC ID or IP rating.

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.

1year10Maker product pagesamsung.com/uk/support/warrantyRead 5 October 2026UK Galaxy Buds and wireless headphones category specifies 12 months. Statutory consumer rights and optional extended coverage are separate.

Not available

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