Earbuds / Compare

Bose QuietComfort Earbuds II vs Sony LinkBuds S

A

Product A: Bose

QuietComfort Earbuds II

74 of 166 known

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B

Product B: Sony

LinkBuds S

88 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

ABose QuietComfort Earbuds II

BSony LinkBuds S

General

6 of 8 differ

Series

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

LinkBuds1Maker product pagesony.jp/headphone/products/LinkBuds_SRead 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-LS900N, YY29501Maker product pagesony.jp/headphone/products/LinkBuds_SRead 5 October 20263Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Cover page 1 identifies Model YY2950. Contents page 2 identifies WF-LS900N.

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

18 May 20224Press releaseprnewswire.com/news-releases/sony-electronics-introduces-additional-model-to-linkbuds-series-a-new-frontier-for-headphones--linkbuds-s-301549817.htmlRead 5 October 2026Original Sony Electronics release issued May 18, 2022, syndicated by PR Newswire. May 20 availability is a forecast here and corroborated by actual retrospective review.

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.

Not available

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

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Bose QuietComfort 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 LinkBuds Fit18Reviewm.gsmarena.com/sony_unveils_linkbuds_open_with_open_design_linkbuds_fit_replace_the_linkbuds_s-amp-64762.phpRead 23 October 2026GSMArena says the LinkBuds Fit replaces the LinkBuds S and calls it the sequel to the LinkBuds S.19Reviewtomsguide.com/audio/sony-revives-linkbuds-series-with-a-focus-on-style-and-fit-can-they-beat-boseRead 23 October 2026Tom's Guide says the LinkBuds Fit takes over for the LinkBuds S.

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.

$199.994Press releaseprnewswire.com/news-releases/sony-electronics-introduces-additional-model-to-linkbuds-series-a-new-frontier-for-headphones--linkbuds-s-301549817.htmlRead 5 October 2026Exact US manufacturer MSRP USD 199.99, excluding tax. SoundGuys later USD 198 and current store prices are not launch MSRP.6Press releaseprnewswire.com/news-releases/sony-electronics-announces-the-new-linkbuds-s-earth-blue-noise-canceling-truly-wireless-headphones-made-from-water-dispenser-bottles-and-new-model-linkbuds-uc-for-microsoft-teams-301658003.htmlRead 5 October 2026Earth Blue US original MSRP also USD 199.99. No later retail amount substituted.

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/LinkBuds_SRead 5 October 2026Current exact Sony Japan store offers this model for purchase. US availability is established separately by the original launch release.4Press releaseprnewswire.com/news-releases/sony-electronics-introduces-additional-model-to-linkbuds-series-a-new-frontier-for-headphones--linkbuds-s-301549817.htmlRead 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, White, Ecru, Earth Blue1Maker product pagesony.jp/headphone/products/LinkBuds_SRead 5 October 2026Original Black, White and Ecru plus later Earth Blue. Ear-tip construction is common but identification markings differ by finish. No unproved regional SKU rows.4Press releaseprnewswire.com/news-releases/sony-electronics-introduces-additional-model-to-linkbuds-series-a-new-frontier-for-headphones--linkbuds-s-301549817.htmlRead 5 October 2026Original White and Black at Sony US and Ecru exclusive Best Buy. Later Earth Blue separately sourced.6Press releaseprnewswire.com/news-releases/sony-electronics-announces-the-new-linkbuds-s-earth-blue-noise-canceling-truly-wireless-headphones-made-from-water-dispenser-bottles-and-new-model-linkbuds-uc-for-microsoft-teams-301658003.htmlRead 5 October 2026October 25, 2022 original Sony release adds Earth Blue. Its earlier colours have been available since May. Earth Blue is a later finish of the same LinkBuds S, not the LinkBuds UC for Teams announced in the same article.

Segment

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

Music1Maker product pagesony.jp/headphone/products/LinkBuds_SRead 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-ear3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 17 instructs sealing with a tip inside the canal. Exact diagrams show compact bodies without extending stems.4Press releaseprnewswire.com/news-releases/sony-electronics-introduces-additional-model-to-linkbuds-series-a-new-frontier-for-headphones--linkbuds-s-301549817.htmlRead 5 October 2026

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.

Stemless3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Exact parts and wearing diagrams show stemless bodies.

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/linkbudss/v1/en/print.pdfRead 5 October 2026Pages 19-20 allow either unit with suitable settings. Service Link requires right. Assistant/control assignments can restrict one-ear operation.10Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026

RGB lighting

Not available

Not available

Drivers and sound

8 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 LinkBuds S

Not available

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/LinkBuds_S/spec.htmlRead 5 October 2026Maker identifies closed dynamic transducer. Neodymium magnet is not treated as diaphragm material.17Maker spec sheet (PDF)boulanger.scene7.com/is/content/Boulanger/4548736144873_f_0Read 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

Not available

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

Not available

Diaphragm material

Not available

Not available

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

Not available

Not available

Impedance

Not available

Not available

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

Not available

Not available

Sensitivity reference

Not available

Not available

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

Not available

96kHz3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 166 publishes LDAC transmission at 96 kHz and 990 kbps. This is supported codec sample rate, not acoustic frequency response or guaranteed lossless sound.15Reviewwhathifi.com/reviews/sony-linkbuds-sRead 5 October 2026Exact LDAC supported source conditions. Other codecs need their own limits.

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

24bits15Reviewwhathifi.com/reviews/sony-linkbuds-sRead 5 October 2026Exact review explicitly describes supported LDAC input up to 24-bit/96 kHz at up to 990 kbps from compatible source such as Xperia 1 III. This is codec input capability, not DSEE upscaling or lossless transmission.

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

Yes11Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_6.htmlRead 5 October 2026Exact certified 360 Reality Audio maker section optimizes using ear shape and headphone characteristics through companion app. It is not a hearing-test profile.

Onboard EQ

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

Yes9Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_4.htmlRead 5 October 2026

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

513Maker product pageexperience.sony-asia.com/ph/home/exploredetail/546Read 5 October 2026Exact maker article includes LinkBuds S in model list and explicitly five EQ frequencies plus separate Clear Bass. Five independently adjustable equalizer bands stored, bass shelf not counted as sixth.

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.

Relaxed, Bass Boost, Treble Boost9Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_4.htmlRead 5 October 2026Maker explicitly names Relaxed and Bass Boost among eight presets. Treble Boost is independently demonstrated by exact SoundGuys measurements. Unnamed presets are omitted.16Measurementsoundguys.com/sony-linkbuds-s-review-74398Read 5 October 2026Exact tested Treble Boost preset is explicitly named and compared against default.

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 Audio11Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_6.htmlRead 5 October 2026360 Reality Audio content/service required. Dolby Atmos spatial rendering through optional WLA-NS7 and compatible BRAVIA XR is a separate external-system scenario, not an unqualified native earbud codec.

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.

Yes12Maker product pagesony.co.uk/electronics/support/software/00278794Read 5 October 2026Exact LinkBuds S firmware 4.3.1 previous-benefits section explicitly adds Head Tracking. Supported phone model and Android OS required. Current feature, not original firmware.

Noise cancelling

7 of 11 differ

Active noise cancelling

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

Yes4Press releaseprnewswire.com/news-releases/sony-electronics-introduces-additional-model-to-linkbuds-series-a-new-frontier-for-headphones--linkbuds-s-301549817.htmlRead 5 October 20267Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_2.htmlRead 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.

Hybrid7Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_2.htmlRead 5 October 2026Exact Dual Noise Sensor Technology paragraph explicitly integrates feedforward and feedback methods. Activity/location profiles do not establish adaptive ANC-strength calibration or continuously blended audio.

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.

414Review52audio.com/archives/122319.htmlRead 5 October 2026Two MEMS per earbud explicitly used for active cancellation and call-noise pickup. Four across pair, overlapping call microphones.

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

Yes7Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_2.htmlRead 5 October 2026

Adjustable transparency

Not available

Yes7Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_2.htmlRead 5 October 2026Exact maker 20 ambient-level adjustment and Voice Focus. These levels are not ANC strength levels.

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

Yes7Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_2.htmlRead 5 October 2026Speak-to-Chat pauses playback and changes to ambient sound on voice detection. User setup and detection sensitivity affect operation.

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

Yes7Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_2.htmlRead 5 October 2026Maker describes mesh around microphones for reducing wind during ANC and ambient listening. Preliminary French sheet calls automatic wind cancellation, but this physical design is the precise published mechanism.

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 default measured response follows the review target through much of the bass and midrange. Response above about 2 kHz is reduced. The Treble Boost preset brings the high range closer to the target.16Measurementsoundguys.com/sony-linkbuds-s-review-74398Read 5 October 2026Published default and Treble Boost lab curves relative to SoundGuys target. Fixture revision, original firmware and codec unstated. Point 35 dB attenuation around 200 Hz does not establish a band-average isolation figure.

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.

Quiet-condition recordings provide usable speech pickup. The published street-noise recording contains processing artifacts and reduced voice clarity.16Measurementsoundguys.com/sony-linkbuds-s-review-74398Read 5 October 2026Published ideal, office and street demos with explicit processing-artifact discussion. No numeric handling score or unlabelled codec 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 LinkBuds S

Hours (h)
5.68

Source16Measurementsoundguys.com/sony-linkbuds-s-review-74398Read 5 October 2026Exact review tested 5 hours 41 minutes with continuous real music peaking at 75 dB(SPL). ANC state, codec and original firmware not explicit in that paragraph and omitted. Informal experience of case total is not a measured full-case rundown.

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)

5.68h=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

414Review52audio.com/archives/122319.htmlRead 5 October 2026Exact teardown describes two physical MEMS microphones in an earbud, both used for voice and noise cancellation. Four across the pair. Shared roles count once in total.

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

414Review52audio.com/archives/122319.htmlRead 5 October 2026Two MEMS per earbud, four across pair. Physical voice and ANC roles overlap. Motion and IR sensors not counted.

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

Not available

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.

AI8Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_3.htmlRead 5 October 2026Precise Voice Pickup algorithm explicitly trained on more than 500 million voice samples, separating wearer voice from environmental noise. Inner microphones also used for calls. This is voice noise reduction, not merely DSEE music upscaling.

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/linkbudss/v1/en/print.pdfRead 5 October 2026Page 100 explicitly returns own voice through the headset microphone during calls.

Connectivity

11 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 V14Press releaseprnewswire.com/news-releases/sony-electronics-introduces-additional-model-to-linkbuds-series-a-new-frontier-for-headphones--linkbuds-s-301549817.htmlRead 5 October 2026Original release explicitly Sony Integrated Processor V1. Open LinkBuds and LinkBuds Fit processors are not borrowed.7Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_2.htmlRead 5 October 20269Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_4.htmlRead 5 October 202617Maker spec sheet (PDF)boulanger.scene7.com/is/content/Boulanger/4548736144873_f_0Read 5 October 2026

Connections

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

Bluetooth3Owner's manualhelpguide.sony.net/mdr/linkbudss/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/LinkBuds_S/spec.htmlRead 5 October 20263Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 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, LDAC, LC32Maker product pagesony.jp/headphone/products/LinkBuds_S/spec.htmlRead 5 October 2026SBC/AAC/LDAC for Classic Audio and LC3 for later LE Audio. LE features are not claimed as original May 2022 firmware.3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026

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, HSP, TMAP, CSIP, MCP, VCP, CCP2Maker product pagesony.jp/headphone/products/LinkBuds_S/spec.htmlRead 5 October 2026Original A2DP/AVRCP/HFP/HSP plus current TMAP/CSIP/MCP/VCP/CCP LE profiles. Current specification and manual agree.3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026

LE Audio

Not available

Yes3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Pages 39-41 and 97 explicitly LC3 / LE Audio with supported Android device and re-pairing. This is actual later feature support, not inferred from Bluetooth 5.2.12Maker product pagesony.co.uk/electronics/support/software/00278794Read 5 October 2026Later update explicitly supported LE Audio with Xperia 1 V/5 V and expanded compatible-device list. No Auracast support inferred.

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/linkbudss/v1/en/print.pdfRead 5 October 2026Pages 76-77 two simultaneous Classic Audio source links and one playing stream at a time. Current app page 118 excludes multipoint under LE Audio.6Press releaseprnewswire.com/news-releases/sony-electronics-announces-the-new-linkbuds-s-earth-blue-noise-canceling-truly-wireless-headphones-made-from-water-dispenser-bottles-and-new-model-linkbuds-uc-for-microsoft-teams-301658003.htmlRead 5 October 2026Release states a later software update for simultaneous two-device connections, so this feature is qualified as later firmware.10Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 202612Maker product pagesony.co.uk/electronics/support/software/00278794Read 5 October 2026

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

Not available

23Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 202610Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026

Multipoint with LDACiMany buds turn multipoint off on LDAC

Not available

Yes10Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026Current exact maker explicitly says high-quality LDAC remains available in multipoint. This does not apply to LE Audio multipoint.

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

Not available

810Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026Exact maker up to eight remembered devices, separate from two simultaneous source connections.

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Not available

Google Fast Pair, Microsoft Swift Pair10Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026Exact Google Fast Pair and Windows 10/11 quick pairing. Manual page 49 explicitly names Microsoft Swift Pair and Windows 10 version 1803 requirement.

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/LinkBuds_S/spec.htmlRead 5 October 2026Approximately 10 m line of sight, not a guaranteed indoor range. Manual states obstacle and interference limitations.3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Pages 165-166 approximate 10 m line of sight and interference caveat.

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/linkbudss/v1/en/print.pdfRead 5 October 2026Pages 35-48 Android/iPhone, 49-57 Windows and 58-70 macOS. No console Bluetooth microphone compatibility is inferred.

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 LinkBuds S

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

Source3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Bluetooth music via A2DP and calls via HFP/HSP. Exact manual computer-call chapter covers video conferencing. Required Bluetooth adapter and application support stated. macOS chapter specifies 10.15 or later.

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 LinkBuds S

Feature	Needs
LC3 and LE Audio	Updated headset firmware, a maker-supported LE Audio Android device, and LE Audio Priority selected in the companion app. Delete Classic Audio pairing and pair again. Multipoint and several app functions are unavailable during LE Audio.
Head tracking	Updated headset firmware, supported Android phone and OS, companion app setup and a spatial-audio-compatible service. Historical Locatone integration ended in April 2025 and is not required for the current Android feature.
360 Reality Audio personalization	Companion app ear-shape analysis, compatible content and streaming service. Subscription and regional availability may apply.
LDAC multipoint	Current firmware and Connect to 2 devices simultaneously enabled in the companion app. It routes one audio stream at a time.
Google audio switch	Android 8.0 or later, Google Play, Google Fast Pair pairing and the same Google account on the Android devices. This is separate from Sony Auto Switch with a compatible speaker.
Single-bud use	Either bud works with suitable control assignments. Service Link requires the right bud. Google Assistant or Alexa assignment can limit which bud works alone.
Consecutive-tap volume controls	Updated headset firmware. Four or more left taps lower music volume and right taps raise it. During calls, adjust volume on the phone or app.

Source3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Exact pages 19-20, 39-41, 76-78, 118 and 120 retain feature restrictions, current versus launch firmware and supported platform conditions.6Press releaseprnewswire.com/news-releases/sony-electronics-announces-the-new-linkbuds-s-earth-blue-noise-canceling-truly-wireless-headphones-made-from-water-dispenser-bottles-and-new-model-linkbuds-uc-for-microsoft-teams-301658003.htmlRead 5 October 20268Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_3.htmlRead 5 October 2026Calls require Bluetooth HFP/HSP support. Current Android head tracking separately supported by firmware and support article. Historical Locatone is not treated as a current prerequisite.10Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026Google audio switch needs Android 8+, Google Play, same Google account and Fast Pair. Current Sony Auto Switch with a compatible speaker is a separate function and is not generic automatic switching between source devices.11Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_6.htmlRead 5 October 2026Companion app or Spatial Sound Personalizer ear photos plus supported service/content. No subscription-free or region-universal promise.12Maker product pagesony.co.uk/electronics/support/software/00278794Read 5 October 2026Later two-device connections, volume taps, LE Audio, head tracking and new Find My Device are listed explicitly. New finding is restricted to dedicated Classic Audio.

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 LinkBuds S

Mode	Codec	Includes case recharges	Hours (h)
ANC on	LDAC	No	3.5
Transparency	LDAC	No	3.5
ANC off	LDAC	No	4.5
ANC on	AAC	No	6
Transparency	AAC	No	6
ANC off	AAC	No	9
ANC on	SBC	No	6
Transparency	SBC	No	6
ANC off	SBC	No	9
ANC on	LC3	No	5.5
Transparency	LC3	No	5.5
ANC off	LC3	No	9
ANC on	AAC	Yes	20
ANC off	AAC	Yes	30
Call	Not available	No	3.5

Source3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Pages 27-28 separate LDAC/AAC/SBC/LC3 playback with ANC, ambient and both off. EQ, DSEE Extreme, Speak-to-Chat, wake-word assistant and Service Link reduce listed maxima. Volume and original measurement firmware are not stated. Calls are up to 3.5 hours in all three noise-control states, codec unstated. Standby 8.5 hours ANC, 8 ambient and 16 both off cannot be represented by existing runtime modes and are not stored.10Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026Maker with-case 20 hours ANC on and 30 hours off. Footnote identifies AAC, DSEE/EQ off and all other settings default. No nominal full-recharge multiplication.

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

9h=CalculatedFrom Claimed battery life

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

6h=CalculatedFrom Claimed battery life

6h=CalculatedFrom Claimed battery life

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

Not available

9h=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

30h=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

20h=CalculatedFrom Claimed battery life

Talk time (claimed)

Not available

3.5h=CalculatedFrom Claimed battery life

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

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

120min3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 25 approximately two hours for empty earbuds charging in a previously charged case. Page 24 empty-to-full combined earbuds/case is about three hours. Page 25 recommends ambient 15 to 35 degrees C. Page 165 rated charging-temperature range is 5 to 35 degrees C.

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/linkbudss/v1/en/print.pdfRead 5 October 202610Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 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.

1h3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 27 approximately one hour after five-minute charge. Exact Japan feature page footnote independently specifies AAC, ANC on, DSEE/EQ off and all other functions default.10Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026Five-minute charge provides up to one hour, AAC/ANC on, DSEE/EQ off, other settings default. Earbuds-only playback.

Charging case

1 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

450mAh14Review52audio.com/archives/122319.htmlRead 5 October 2026Original June 20, 2022 exact WF-LS900N teardown: case label explicitly rated 450 mAh/1.732 Wh, nominal 3.85 V, SP 731834 pack. Earbud ZeniPower Z52H only 0.21 Wh/3.85 V is not converted to rounded mAh or replaced by 75 mAh aftermarket listings.

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/linkbudss/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/linkbudss/v1/en/print.pdfRead 5 October 2026Page 165 case charging approximately three hours. Pages 24-25 define empty-to-full USB charging with supplied cable and a USB adapter able to supply at least 500 mA. Preliminary sheet calling earbuds three hours conflates the combined result.

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

No5Reviewtechradar.com/reviews/sony-linkbuds-sRead 5 October 2026Exact review explicitly states no wireless charging compatibility. USB-C case charging only.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Screen on case

Not available

Not available

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

Not available

Not available

Controls

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/linkbudss/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/linkbudss/v1/en/print.pdfRead 5 October 2026Page 21 left consecutive taps lower and right raise music volume. Page 100 explicitly says call volume cannot be adjusted on the buds and must use phone/app.

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, Four or more consecutive taps, Touch and hold3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 21 single, double, triple, four-or-more taps and hold. Consecutive-tap volume support is later firmware. No original LinkBuds wide-area skin taps copied.

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/linkbudss/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/linkbudss/v1/en/print.pdfRead 5 October 202610Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026

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/linkbudss/v1/en/print.pdfRead 5 October 202610Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026

Sensors

Not available

Infrared wearing sensors, Motion sensor3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 13 identifies IR wearing sensors. Motion sensing is separately maker-published. A speech-detecting motion sensor is not claimed as dedicated bone-conduction pickup.8Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_3.htmlRead 5 October 2026Maker explicitly identifies internal motion sensor for historical spatial application head tracking. Locatone integration ended April 21, 2025 and is not presented as a current service.14Review52audio.com/archives/122319.htmlRead 5 October 2026Teardown identifies optical wearing sensor and 5L1DR accelerometer. This does not establish bone/jaw speech-conduction pickup.

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.

SS, S, M, LL3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026SS/S/M/LL, two of each, M preinstalled. Page 10 explicitly says L is not supplied and sold separately. Preliminary French sheet three S/M/L sizes is overruled by the original manual.

Ear tip materials

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

Silicone3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Hybrid silicone rubber is Sony naming for silicone construction, not proof of silicone/foam hybrid tips.

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

Yes3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Pages 17-18 app determines which supplied tips seal best. This is an acoustic fit test, 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/linkbudss/v1/en/print.pdfRead 5 October 2026Page 133 exact IPX4 equivalent for earbuds only. Sound conduits, air holes and microphone parts are not completely watertight. Case explicitly not water resistant. No case IP class inferred.

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 Connect9Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_4.htmlRead 5 October 2026Exact maker names Sound Connect, formerly Headphones Connect. Original manual old branding is retained only as historical source wording.12Maker product pagesony.co.uk/electronics/support/software/00278794Read 5 October 2026Firmware page explicitly current Sony Sound Connect app. Latest update requires Android 10+ or iOS 16+ and app 12.3+.

App platforms

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

Android, iOS3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Pages 34 and 120 explicitly Android/iPhone app setup. Current firmware update names Sony Sound Connect.

User firmware updates

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

Yes3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 118 explicitly software updates through companion app.12Maker product pagesony.co.uk/electronics/support/software/00278794Read 5 October 2026

Finding network

Not available

Last location in the app10Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_5.htmlRead 5 October 2026Current exact page describes last Android connection location/time using Google app after Fast Pair. Firmware adds new Find My Device support, but offline crowd-network eligibility is not explicit in the reopened exact documentation. Only proved last-location capability stored.

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.

4.8g(0.2 oz)2Maker product pagesony.jp/headphone/products/LinkBuds_S/spec.htmlRead 5 October 2026Approximate 4.8 g per unit, with M tips confirmed by manual page 165.3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 165 approximately 4.8 g each including M tips. Pair mass not stored as single-bud weight.

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.

35g(1.2 oz)3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 165 approximately 35 g charging case, excluding buds. SoundGuys 42 g in-case figure is not substituted.

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

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Certifications

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

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Hi-Res Audio Wireless9Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_4.htmlRead 5 October 2026Exact model Hi-Res Audio Wireless / LDAC conditions. DSEE Extreme upscales to 96 kHz/24 bit and does not establish accepted input bit depth by itself.17Maker spec sheet (PDF)boulanger.scene7.com/is/content/Boulanger/4548736144873_f_0Read 5 October 2026

Communication certifications

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FCC IDs

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Other certifications

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360 Reality Audio certified11Maker product pagesony.jp/headphone/products/LinkBuds_S/feature_6.htmlRead 5 October 2026

In the box

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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

LinkBuds S earbuds, Charging case, Hybrid silicone rubber ear tips (SS, S, M, LL pairs), USB-A to USB-C cable3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 9 complete package list: earbuds, charging case, one USB-A/C cable and four pairs of hybrid silicone rubber tips. Manuals and warranty card observed in a regional teardown are not assigned to every international box.

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 LinkBuds S

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

Source3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Page 9 approximately 20 cm USB-A to USB-C, one cable.

Links

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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/LinkBuds_S1Maker product pagesony.jp/headphone/products/LinkBuds_SRead 5 October 2026Exact Sony Japan LinkBuds S generation and current storefront. The smaller original open-ring LinkBuds WF-L900 and later LinkBuds Fit WF-LS910N are excluded.

Spec sheet

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www.sony.jp/headphone/products/LinkBuds_S/spec.html2Maker product pagesony.jp/headphone/products/LinkBuds_S/spec.htmlRead 5 October 2026Exact maker specification table, read alongside current original 166-page manual. Proved driver diameter is 5 mm, but the physical per-bud transducer count is not explicitly stated. Optional driver table is omitted because its missing count would derive one.17Maker spec sheet (PDF)boulanger.scene7.com/is/content/Boulanger/4548736144873_f_0Read 5 October 2026Original Sony France preliminary two-page product sheet, reopened from distributor. 5 mm dynamic and V1 agree. Three-tip S/M/L package, 3-hour earbud charge and 3 h 50 min call claims conflict with original manual and are rejected. Printed case axes 42.8 x 60 x 27.6 mm in width/height/depth order conflict with other maker tuple conventions, so case dimensions remain absent. Numeric diameter retained here without unsafe count-derived table.

Manual

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helpguide.sony.net/mdr/linkbudss/v1/en/print.pdf3Owner's manualhelpguide.sony.net/mdr/linkbudss/v1/en/print.pdfRead 5 October 2026Exact original YY2950 / WF-LS900N 166-page Help Guide, current revision 5-035-792-11(8), copyright 2022.

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

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

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.

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