Earbuds / Compare

CMF Buds Pro 2 vs Sony LinkBuds Fit

A

Product A: CMF

Buds Pro 2

78 of 166 known

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B

Product B: Sony

LinkBuds Fit

84 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

ACMF Buds Pro 2

BSony LinkBuds Fit

General

6 of 8 differ

Series

Not available

LinkBuds1Maker product pagesony.co.uk/electronics/support/wireless-headphones-bluetooth-headphones/wf-ls910n/specificationsRead 5 October 2026

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

69744342259301Maker product pagecheckout-us.nothing.tech/products/cmf-buds-pro-2.jsRead 8 October 2026Exact current manufacturer sales SKU is 6974434225930, also its GTIN. The physical revision code is not proven for this sales SKU. Original guide B172, a 2025 declaration B187, and currently linked B195 declarations are not silently mapped to it.9Maker spec sheet (PDF)cdn.shopify.com/s/files/1/0376/5420/0459/files/CMF_Buds_Pro_2_EU_DoC_Multilingual.pdfRead 8 October 2026Current family-linked declaration prints B195, software V1.0.1.33, signed August 17, 2026. Family PSTI likewise prints B195. A 2025 declaration prints B187, while the downloadable user guide prints B172. None supplies an exact bridge to the selected current US sales SKU, so physical model-code mapping and revision-specific certifications remain unknown.

WF-LS910N, YY29753Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

GTIN / EAN

69744342259301Maker product pagecheckout-us.nothing.tech/products/cmf-buds-pro-2.jsRead 8 October 2026Exact current Dark Grey native barcode 6974434225930. Other colours have separate current barcodes.

Not available

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

Not available

1 October 20245Press releasesony.mediaroom.com/2024-10-01-Sony-Electronics-Expands-its-LinkBuds-Range-with-the-LinkBuds-Fit-and-LinkBuds-Open-Earbuds,-and-LinkBuds-SpeakerRead 5 October 2026October 1 opens preorder. Actual October retail month independently established below.

Status

Available1Maker product pagecheckout-us.nothing.tech/products/cmf-buds-pro-2.jsRead 8 October 2026Native official US product data directly identifies Dark Grey variant 45068151816344 as available true. Stock is a point-in-time observation, not a permanent quantity claim.

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

Sony LinkBuds S15Reviewm.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.16Reviewtomsguide.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.

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

Not available

Not available

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

Not available

$199.995Press releasesony.mediaroom.com/2024-10-01-Sony-Electronics-Expands-its-LinkBuds-Range-with-the-LinkBuds-Fit-and-LinkBuds-Open-Earbuds,-and-LinkBuds-SpeakerRead 5 October 2026Original maker launch MSRP 199.99 USD. Later SoundGuys commerce widget 229.99 USD is excluded. Before US local sales tax. EUR VAT scope unproved.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

Not available

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

US1Maker product pagecheckout-us.nothing.tech/products/cmf-buds-pro-2.jsRead 8 October 2026

GB, US, JP2Maker product pagesony.co.uk/headphones/products/linkbuds-fitRead 5 October 2026This exact UK page establishes GB. US launch and Japanese product pages separately establish their own markets.5Press releasesony.mediaroom.com/2024-10-01-Sony-Electronics-Expands-its-LinkBuds-Range-with-the-LinkBuds-Fit-and-LinkBuds-Open-Earbuds,-and-LinkBuds-SpeakerRead 5 October 20266Maker product pagesony.jp/headphone/products/LinkBuds_FitRead 5 October 2026

ColoursiThe maker's own colour names

Orange, Dark Grey, Light Grey, Blue1Maker product pagecheckout-us.nothing.tech/products/cmf-buds-pro-2.jsRead 8 October 2026

Black, White, Green, Pink, Violet5Press releasesony.mediaroom.com/2024-10-01-Sony-Electronics-Expands-its-LinkBuds-Range-with-the-LinkBuds-Fit-and-LinkBuds-Open-Earbuds,-and-LinkBuds-SpeakerRead 5 October 2026Original US maker launch lists Black, White, Green and US-only Violet Olivia edition. Separately sold accessory-cover colours are not earbud finishes.6Maker product pagesony.jp/headphone/products/LinkBuds_FitRead 5 October 2026Japanese current product lists base finishes including later Pink. Original US maker release separately proves US Violet Olivia edition.

Segment

Music2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Music2Maker product pagesony.co.uk/headphones/products/linkbuds-fitRead 5 October 2026

Design

2 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 pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

In-ear2Maker product pagesony.co.uk/headphones/products/linkbuds-fitRead 5 October 2026

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

Stem2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Stemless2Maker product pagesony.co.uk/headphones/products/linkbuds-fitRead 5 October 2026

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

Not available

Either bud3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

RGB lighting

Not available

Not available

Drivers and sound

9 of 17 differ

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

ACMF Buds Pro 2

Role	Diameter (mm)	Count per earbud
Woofer	11	1
Tweeter	6	1

Source2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current table names an 11 mm bass driver and 6 mm micro-planar tweeter. Dual-driver acoustics establishes one of each per earbud. The maker does not explicitly name the magnetic architecture or bass transducer technology, so type cells and the aggregate driver_type are left unknown.

BSony LinkBuds Fit

Type	Diameter (mm)
Dynamic	8.4

Source8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026Exact LinkBuds Fit section explicitly 8.4 mm Dynamic DriverX, not borrowed merely because the page mentions WF1000XM5. Existing dynamic technology retained, no guessed dome/edge material or count.13Maker product pagesony.jp/headphone/products/LinkBuds_Fit/spec.htmlRead 8 October 2026Exact model specification lists 8.4 mm driver unit. Per-bud transducer count is not explicitly stated and is not inferred.

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

Not available

Dynamic8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026Exact named Dynamic Driver X 8.4 mm. Diaphragm combines different dome/edge materials, whose chemical identities are not published.

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

11mm=CalculatedFrom Drivers per bud

8.4mm=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

Not available

Diaphragm material

11 mm bass driver: PU + PET, titanium-coated. 6 mm micro-planar tweeter: PET + titanium-coated PET.2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current Sound table publishes two diaphragm descriptions alongside the two named driver rows. Material text retains their bass/tweeter order and the exact micro-planar description. No original-review driver architecture is imported.

Not available

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

Min20 HzMax40 kHz2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current maker acoustic comparison explicitly labels Buds Pro 2: 20~40000Hz. This is the earbud frequency range, not inferred from the LDAC sample rate.

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.

96kHz2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current LDAC section directly states up to 24 bits/96 kHz/990 kbps with a compatible LDAC source. This does not establish lossless playback.

96kHz13Maker product pagesony.jp/headphone/products/LinkBuds_Fit/spec.htmlRead 8 October 2026Exact model A2DP transmission specification explicitly LDAC 96 kHz sampling at 990 kbps. Highest documented supported source condition. 20 Hz to 40 kHz is A2DP transmission bandwidth, not stored as acoustic response.

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.

24bits2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Direct current LDAC claim, conditional on a compatible source and enabled codec. Not inferred from Bluetooth version.

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

Yes8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026

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.

312Reviewsoundguys.com/cmf-buds-pro-2-review-big-features-small-price-smart-dial-123206Read 10 October 2026App section: custom circular tri-band equalizer, separate from the Ultra Bass mode. Read from the original 2024 review, so the current Nothing X band count was not rechecked.

59Reviewwhathifi.com/reviews/sony-linkbuds-fitRead 5 October 2026Exact review Features states five custom EQ bands. App/firmware version unknown. CLEAR BASS separately controlled.

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

Not available

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.

Spatial Audio Effect2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current maker explicitly names Spatial Audio Effect based on HRTF. No Dolby format, dynamic head tracking or object-audio decoding is inferred.

360 Reality Audio8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026Compatible 360 Reality Audio streaming service, content and Sound Connect ear-shape analysis required. DSEE 96 kHz/24 bit upscaling is not accepted input resolution and is omitted from max digital input fields.

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

Not available

Yes9Reviewwhathifi.com/reviews/sony-linkbuds-fitRead 5 October 2026Exact review Features explicitly supports head tracking. Compatible phone/content/app required, without claiming universal iOS tracking.

Noise cancelling

4 of 11 differ

Active noise cancelling

Yes2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Yes8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026

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

Hybrid2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Not available

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.

Not available

Not available

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

Yes2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current maker describes automatic detection and compensation for ear-canal noise leakage, plus environment-adaptive mode in Nothing X. This does not prove real-time adaptive EQ.

Yes8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026Auto NC Optimizer explicitly detects wearing fit and environment and continuously optimizes cancellation. This is separate from activity-based switching.

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.

50dB2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current maker names up to 50 dB Hybrid ANC with coverage up to 5000 Hz. Its footnote calls 50 dB a theoretical laboratory maximum. Coverage up to 5000 Hz does not establish the frequency at which maximum attenuation occurs. No reviewer-measured overall attenuation is substituted.

Not available

Transparency mode

Yes2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 20268Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026

Adjustable transparency

Not available

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Pages 100-101 and app page 124 document changing ambient capture and Auto Ambient Sound sensitivity.8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026Manual page 101 auto-adjusts ambient capture in ambient mode. This does not establish an ANC/transparency blend, so adaptive_audio_mode omitted.

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

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Speak-to-Chat automatically pauses/mutes music when wearer speaks. Does not imply a medical hearing feature.

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 pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current Call functions table explicitly names Wind Noise Reduction 3.0, so this is call-processing evidence. Other page prose retains 2.0 wording. No separate user-selectable listening/ANC wind toggle or physical wind-mesh design is inferred.

Yes8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026Physical wind reduction structure around mic. No selectable wind-processing mode assumed.

Measured

4 of 23 differ

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

Bass is raised by about 12 to 15 dB between 20 and 400 Hz and peaks near 50 Hz. The treble from 5 to 20 kHz shows several peaks and dips.12Reviewsoundguys.com/cmf-buds-pro-2-review-big-features-small-price-smart-dial-123206Read 10 October 2026Objective Measurements section against the SoundGuys house curve, original 2024 review sample. Bass boost 20 to 400 Hz and treble variation 5 to 20 kHz are quoted from the text. No dB target values are stored.

Lab response has emphasized bass, a dip in low mids and uneven highs against the reviewer preference curve.11Reviewsoundguys.com/sony-linkbuds-fit-review-127506Read 8 October 2026Exact lab commentary. No graph extraction, ratings or MOS converted into dB.12Measurementsoundguys.com/how-we-testRead 5 October 2026Bruel & Kjaer 5128 fixture, SoundCheck and source preference curve.

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

Recorded speech samples cover ideal, office, street, windy and reverberant conditions. Voices sound slightly muffled. Background noise reduction is very good, especially in wind.12Reviewsoundguys.com/cmf-buds-pro-2-review-big-features-small-price-smart-dial-123206Read 10 October 2026Microphone section and demos recorded by SoundGuys on the original 2024 sample. Office, street, windy and reverberant demos were listened to as described by the reviewer.

Standardized recordings show problems with street noise and reverberation, while wind was handled better.11Reviewsoundguys.com/sony-linkbuds-fit-review-127506Read 8 October 2026Exact recorded ideal/office/street/wind/reverberant speech samples. No numerical capsule count inferred.12Measurementsoundguys.com/how-we-testRead 5 October 2026Calibrated artificial mouth with simulated noise, wind and reverberation.

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.

ACMF Buds Pro 2

ANC	Hours (h)
Yes	6.25

Source13Measurementsoundguys.com/cmf-buds-pro-2-review-big-features-small-price-smart-dial-123206Read 10 October 2026Battery section: "In our testing" the buds lasted roughly 6 hours 15 minutes with ANC on, stored as 6.25 h. Earbuds only, one charge. Codec, volume and firmware are not stated in the review. SoundGuys states its standard method on its how-we-test page. The tested sample is the original 2024 unit, and the current sales revision is not proven identical.

BSony LinkBuds Fit

Hours (h)
6.77

Source11Reviewsoundguys.com/sony-linkbuds-fit-review-127506Read 8 October 2026Own standardized rundown 6 h 46 min (existing row retained). Exact review unit WFLS910NB.UC, firmware 1.2.0 and Sound Connect 11.0.2. Runtime paragraph does not specify ANC, codec or exact host, so no flags inferred from its iPhone/computer discussion. LC3 extension is explicitly untested and omitted.12Measurementsoundguys.com/how-we-testRead 5 October 2026Standardized continuous music peaks 75 dB SPL. This does not establish an unstated ANC/codec for a particular sample.

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

6.25h=CalculatedFrom Battery life (measured)

6.77h=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

2 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.

62Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current Call functions table states six microphones in total across the pair. They serve voice capture. Shared ANC functions do not add microphones.

Not available

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.

62Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Six total microphones across the earbud pair, counted once. Current table calls the call processing Clear Voice Technology 3.0 and wind processing Wind Noise Reduction 3.0, while other page text retains 2.0 wording. Processing-version conflict does not create extra physical microphones.

Not available

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

Not available

Not available

Mic noise reduction

AI12Reviewsoundguys.com/cmf-buds-pro-2-review-big-features-small-price-smart-dial-123206Read 10 October 2026Calls section: six microphones and an AI noise reduction algorithm. The review sample is the original June 2024 unit. The current maker table calls the processing Clear Voice Technology 3.0 without the word AI.

AI7Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_4.htmlRead 5 October 2026Exact model maker call paragraph explicitly AI-trained separation of wearer voice and environmental noise. Published physical voice/total capsule counts not found. Internal microphone is expressly used for calls, so exterior diagram alone is incomplete.

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

Not available

Connectivity

8 of 18 differ

Chip

Not available

Sony Integrated Processor V25Press releasesony.mediaroom.com/2024-10-01-Sony-Electronics-Expands-its-LinkBuds-Range-with-the-LinkBuds-Fit-and-LinkBuds-Open-Earbuds,-and-LinkBuds-SpeakerRead 5 October 2026Exact product launch explicitly names Integrated Processor V2 in this model, not inferred from sibling hardware.

Connections

Bluetooth2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Bluetooth3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

Bluetooth

5.42Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current US table explicitly states Bluetooth 5.4. Generic support FAQ and original B172 documents say 5.3. Current listing is represented, with the historical conflict retained. No firmware-only radio upgrade or physical revision code is invented.

5.31Maker product pagesony.co.uk/electronics/support/wireless-headphones-bluetooth-headphones/wf-ls910n/specificationsRead 5 October 20263Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Original exact manual printed pages 153-154 explicitly publish Bluetooth 5.3, named codecs and profiles.

Bluetooth codecs

LDAC, AAC, SBC3Maker product pagesupport.nothing.tech/hc/en-us/articles/26468752574481-What-audio-formats-does-CMF-Buds-Pro-2-supportRead 8 October 2026Current exact-model support answer explicitly lists LDAC, AAC and SBC. Main current listing independently advertises LDAC, and the exact-model battery FAQ names AAC and LDAC. No LE Audio support or absence is inferred from the changed radio version.

SBC, AAC, LDAC, LC31Maker product pagesony.co.uk/electronics/support/wireless-headphones-bluetooth-headphones/wf-ls910n/specificationsRead 5 October 2026LC3 needs compatible LE Audio Android hardware and app setup. Fit LDAC uses Classic Audio. No Auracast inferred from LC3 or Bluetooth 5.3.3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

Bluetooth profiles

Not available

A2DP, AVRCP, HFP, HSP, TMAP, CSIP, MCP, VCP, CCP1Maker product pagesony.co.uk/electronics/support/wireless-headphones-bluetooth-headphones/wf-ls910n/specificationsRead 5 October 20263Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

LE Audio

Not available

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

Auracast

Not available

Not available

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

Yes2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Two concurrent sources in Classic Audio, one playing stream. App list marks multipoint unavailable during LE Audio. No simultaneous LC3 multipoint claim.

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

26Maker product pagesupport.nothing.tech/hc/en-us/categories/25890107917585-CMF-Buds-Pro-2Read 8 October 2026Current family support explicitly describes two phones connected concurrently and prioritization between their music and calls, matching the current listing Dual connection. An older reviewer called this No Multipoint while acknowledging dual-device pairing. The documented concurrent behavior meets this field definition.

23Owner's manualhelpguide.sony.net/mdr/2975/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

83Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

Automatic switching between own devicesiThrough the maker's account

Not available

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Printed page 85 explicitly Google audio switch on compatible Android 8+ devices, using Fast Pair. Separate from Sony Auto Switch to LinkBuds Speaker.

Fast pairing

Google Fast Pair, Microsoft Swift Pair2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Google Fast Pair, Microsoft Swift Pair3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Android Google audio switch chapter explicitly requires Google Fast Pair. Windows 10/11 chapters explicitly document Microsoft Swift Pair.

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

Not available

10m1Maker product pagesony.co.uk/electronics/support/wireless-headphones-bluetooth-headphones/wf-ls910n/specificationsRead 5 October 20263Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Manual explicitly approximate line-of-sight 10 m. Obstacles, interference, antenna, reception and software conditions affect actual range.

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

3 of 3 differ

Low latency mode

Yes2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Not available

Claimed latency

ACMF Buds Pro 2

Connection	Mode	Latency (ms)
Bluetooth	Low Lag Mode with a Nothing phone	120

Source12Reviewsoundguys.com/cmf-buds-pro-2-review-big-features-small-price-smart-dial-123206Read 10 October 2026Review states Low Lag Mode "reduces latency to less than 120ms when used with a Nothing Phone". The Nothing page footnote 8 says as low as 120 ms, but that footnote list mixes in text for other CMF Buds. Stored as 120 ms, a ceiling with a Nothing phone and Low Lag Mode on. No other phone brand is covered.

BSony LinkBuds Fit

Not available

Lowest claimed latency

120ms=CalculatedFrom Claimed latency

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, iOS2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current features table lists Android and iOS with minimum Android 6.0 and iOS 13. Bluetooth audio route only. Console, PC and Mac support is not stated.

Android, iOS, Windows, macOS3Owner's manualhelpguide.sony.net/mdr/2975/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.

ACMF Buds Pro 2

Platform	Connection
Android	Bluetooth
iOS	Bluetooth

Source2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Both mobile systems connect over Bluetooth per the Android and iOS features row. Microphone behaviour per platform is not stated, so microphone_works is left out.

BSony LinkBuds Fit

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

Source3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Exact Android/iPhone/Windows/Mac pairing chapters and computer calls chapter. Classic phone/desktop calls need compatible HFP/HSP app settings. LE Audio availability is separately restricted.

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

ACMF Buds Pro 2

Feature	Needs
Android and iOS compatibility	Current listing specifies Android 6.0 or above and iOS 13 or above. Some older family FAQ wording says Android 5.0.
LDAC audio	Use a compatible LDAC source and enable high-quality audio in Nothing X. Up to 24-bit/96 kHz is a codec claim, not lossless playback. Current physical-revision support for simultaneous LDAC and Dual Connection or Dirac is not established.
Spatial Audio Effect	Enable HRTF spatial processing in Nothing X. No specific source format or dynamic head tracking is claimed.
Smart Dial on the case	Configure the case dial in Nothing X. It supports volume, playback, noise-mode, voice-assistant, low-lag and mic-mute commands. Case-only mute does not establish on-ear microphone mute.
Earbud volume controls	Assign double tap and hold in Nothing X Controls. Hold after the double tap to change volume. Case dial rotation is a separate option.

Source2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current Android minimum is 6.0 and iOS minimum is 13. Generic older FAQ says Android 5.0. Current table is used without claiming all advanced functions operate identically across platforms. Case Smart Dial requires configuration in Nothing X and includes microphone mute. It does not establish an earbud mic mute control.5Maker product pagesupport.nothing.tech/hc/en-us/articles/26468737625489-How-do-I-adjust-the-volume-on-CMF-Buds-Pro-2Read 8 October 20266Maker product pagesupport.nothing.tech/hc/en-us/categories/25890107917585-CMF-Buds-Pro-2Read 8 October 2026Current maker listing independently confirms the same case-dial functions. The support description adds that it has no assigned function by default and must be configured in Nothing X. It does not prove a current physical revision code.

BSony LinkBuds Fit

Feature	Needs
LE Audio / LC3	Compatible Android smartphone and Sound Connect LE Audio setup. Classic-only multipoint, Quick Access and some voice-assistant functions become unavailable.
Google audio switch	Compatible Android 8 or later devices connected through Google Fast Pair.
Head tracking	Android 13+ head-tracking-compatible phone. 360 Reality Audio head tracking also requires certified phone and compatible 360 content. Amazon Music is excluded. Android multichannel head tracking depends on supported app/content. Xperia 1 V multichannel playback is limited to YouTube as stated by maker.
LDAC high-resolution playback	LDAC-compatible source and Sony Sound Connect setup. Maker specifies 96 kHz sampling at 990 kbps for published A2DP bandwidth. High-resolution streaming also requires Android 10+ compatible player. This is not lossless playback or an acoustic frequency-response claim.
DSEE Extreme	Enable in Sony Sound Connect. Maker describes upsampling compressed CD/MP3 material up to 96 kHz/24-bit with SBC/AAC/LDAC. This does not establish incoming source bit depth, so no max_bit_depth_bits inferred.

Source3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Exact manual Classic/LE Audio and Google audio switch conditions. Spatial phone/content requirements independently retained in the source describing tracking.8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026Exact head-tracking requirements: Android 13+, compatible phone/content/app, Amazon Music excluded for 360 Reality Audio. DSEE Extreme 96/24 is upsampling and not incoming source capability.

Official licence

Not available

Not available

Battery and charging

13 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.

60mAh2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current battery table explicitly 60 mAh for one earbud. Typical or rated capacity is not stated.

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

No14Owner's manualbhphotovideo.com/lit_files/1165249.pdfRead 8 October 2026Original reference guide page 1 explicitly non-replaceable button/coin cells and identifies Z35FH. This supports the earbud coin-cell flag only. The charging case battery replacement flag remains unknown, not inferred from recycling instructions.

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.

ACMF Buds Pro 2

Mode	Codec	Includes case recharges	Hours (h)
ANC off	AAC	No	11
ANC off	AAC	Yes	43
ANC on	AAC	No	6.5
ANC on	AAC	Yes	26
Transparency	AAC	No	6.5
Transparency	AAC	Yes	26
ANC off	LDAC	No	6.5
ANC off	LDAC	Yes	25
ANC on	LDAC	No	4.3
ANC on	LDAC	Yes	16.6
Transparency	LDAC	No	4.3
Transparency	LDAC	Yes	16.6
Call	Not available	No	6
Call	Not available	Yes	25
Call	Not available	No	4.8
Call	Not available	Yes	18.6

Source2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current battery table states 11 hours earbuds-only and 43 hours with case for ANC off, matching the model-specific FAQ. A page-body sentence instead says ten hours from the 60 mAh earbud. The specified table/FAQ claim is represented with that body conflict explicit, without claiming a rounding method or tested revision.4Maker product pagesupport.nothing.tech/hc/en-us/articles/26468705886993-How-long-is-the-battery-life-of-CMF-Buds-Pro-2Read 8 October 2026Current model-specific FAQ publishes AAC playback off 11/43 h and on/transparency 6.5/26 h, matching the current main listing. It also declares LDAC off 6.5/25 h and on/transparency 4.3/16.6 h. Playback test conditions are 50% volume and 25 C. Exact physical model code, firmware and spatial-processing state are not stated. These are current published maker claims, not measured performance transferred from a historical unit. Call rows are explicitly ANC off: 6 h earbuds only and 25 h including case. The following call rows are ANC on or Transparency: 4.8 h earbuds only and 18.6 h including case. No AAC codec is assigned to calls from a generic playback test footer. Call ANC state is recorded here as required by the table contract.

BSony LinkBuds Fit

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	5.5
Transparency	AAC	No	5.5
ANC off	AAC	No	8
ANC on	SBC	No	5
Transparency	SBC	No	5
ANC off	SBC	No	7.5
ANC on	LC3	No	4.5
Transparency	LC3	No	4.5
ANC off	LC3	No	7.5
Call	Not available	No	4
ANC on	Not available	Yes	21

Source4Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Exact page 28 codec/mode runtime table. EQ, DSEE Extreme, Speak-to-Chat, voice wake, Service Link and Auto Ambient Sound shorten runtime. Call 4h is ANC on/off. Transparency-call 3.5 h does not fit call enum and is omitted.5Press releasesony.mediaroom.com/2024-10-01-Sony-Electronics-Expands-its-LinkBuds-Range-with-the-LinkBuds-Fit-and-LinkBuds-Open-Earbuds,-and-LinkBuds-SpeakerRead 5 October 2026Body explicitly 21 h including case. Footnote 9 specifies noise cancellation and Bluetooth. Recharge-count marketing is not multiplied into a different total. Codec unstated.

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.

11h=CalculatedFrom Claimed battery life

8h=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.

6.5h=CalculatedFrom Claimed battery life

5.5h=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.

11h=CalculatedFrom Claimed battery life

8h=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.

43h=CalculatedFrom Claimed battery life

21h=CalculatedFrom Claimed battery life

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

26h=CalculatedFrom Claimed battery life

21h=CalculatedFrom Claimed battery life

Talk time (claimed)

6h=CalculatedFrom Claimed battery life

4h=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.

60min2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current table explicitly full charge with charging case: 60 minutes, earbuds only. The separate 85-minute number is for the charging case and earbuds together, not an empty-case charge.

120min3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Approximate earbuds-only full charge in case. Case-only charging is separately published.

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.

Current maker table claims 60 minutes to fully charge earbuds in the case and 85 minutes for the charging case and earbuds together by USB-C. The historical family page claimed 70 minutes for the combined set. No current empty-case full-charge duration is established. The headline claims up to seven hours after a ten-minute charge, without clearly identifying its earbud-only or case-inclusive scope. It is not assigned to the earbuds-only quick-charge field. A cable is omitted from current new-sale box lists, while transitional retailer stock may still include one. Generic CMF Buds disclaimer figures on the page do not match this Pro 2 table and are not substituted.2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current US table names 85 minutes combined, versus the historical 70-minute family claim. The page also contains generic CMF Buds disclaimer text about 35.5-hour playback, two microphones per bud and other charge times that conflicts with the exact Pro 2 table. Those generic statements are not used as Pro 2 numeric facts. No charger input wattage or case-only duration is inferred.

Not available

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

Not available

5min3Owner's manualhelpguide.sony.net/mdr/2975/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.

Not available

1h3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Maker approximately one hour of earbud music after five-minute charging. Codec/volume unspecified for this quick-charge claim. Excludes case-inclusive runtime.

Charging case

3 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.

460mAh2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current battery table explicitly 460 mAh for the case. Input current and output capacity are not substituted.

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-C2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

USB-C3Owner's manualhelpguide.sony.net/mdr/2975/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/2975/v1/en/print.pdfRead 5 October 2026

Wireless charging

No8Owner's manualcdn.shopify.com/s/files/1/0585/5258/2321/files/Buds_Pro_2_User_Guide.pdfRead 8 October 2026Charging page describes only a power cable for the case and gives no wireless charging step. This agrees with SoundGuys, which answers No to wireless charging.12Reviewsoundguys.com/cmf-buds-pro-2-review-big-features-small-price-smart-dial-123206Read 10 October 2026FAQ: "No, they do not have wireless charging."

No11Reviewsoundguys.com/sony-linkbuds-fit-review-127506Read 8 October 2026Exact charging paragraph explicitly USB-only and no wireless charging. Fit FAQ footer says Yes, contradicting its body. Primary maker table/manual only publish USB charging. Detailed tested body takes precedence over generic footer.

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

No11Reviewsoundguys.com/sony-linkbuds-fit-review-127506Read 8 October 2026Exact-model review feature assessment explicitly No transmitter in case. Review unit WFLS910NB.UC, firmware 1.2.0 and Sound Connect 11.0.2. This negative capability is not inferred from a port photo.

Controls

3 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.

Touch2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Touch, Head gestures, Voice commands3Owner's manualhelpguide.sony.net/mdr/2975/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.

Touch5Maker product pagesupport.nothing.tech/hc/en-us/articles/26468737625489-How-do-I-adjust-the-volume-on-CMF-Buds-Pro-2Read 8 October 2026Specific model FAQ permits assigning double tap and hold on an earbud, separate from rotating the case Smart Dial. Current maker touch-control table and configurable-controls list corroborate the compatible operation. Source phone buttons are not counted as earbud volume control.

Touch3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

Gestures

Double tap: skip forward, answer/hang up calls, Triple tap: skip back, reject calls, Tap and hold: switch ANC/Transparency2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Wide Area Tap on earbud or nearby skin, Head nod to accept a call, Head shake to reject a call3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

Remappable controls

Yes2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026App reassigns left/right function groups, voice functions and Quick Access. No arbitrary individual-gesture remapping inferred.

Voice assistant

Voice assistant of the connected phone, ChatGPT (CMF and Nothing phones)2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Nothing X app section: "Use Buds Pro 2 to call up ChatGPT from your CMF and Nothing phones." The original user guide lists wake up voice assistant as an optional earbud function without naming an assistant.8Owner's manualcdn.shopify.com/s/files/1/0585/5258/2321/files/Buds_Pro_2_User_Guide.pdfRead 8 October 2026Operations page: optional earbud functions include wake up voice assistant. No named assistant. Applies to the original B172 guide.

Amazon Alexa, Google app, Siri3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Separate Amazon Alexa, Android Google app and iPhone Siri chapters. Cloud/device/app/region restrictions apply. Some voice routes and Quick Access are unavailable under LE Audio. On-device playback Voice Control is represented in control_types, not invented as a cloud assistant.

Sensors and health

1 of 9 differ

In-ear detection

Yes2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Parts diagrams name built-in IR sensors. App enables automatic pause/resume and power-off when removed.

Sensors

Not available

Infrared wear sensors3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

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

3 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, L2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

SS, S, M, L3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Original manual page 9 exact standard box includes SS/S/M/L tips, two of each. M tips are fitted at purchase.

Ear tip materials

Silicone7Maker product pagesupport.nothing.tech/hc/en-us/articles/26468689235857-What-Material-is-the-CMF-Buds-Pro-2-Made-OfRead 8 October 2026

Silicone11Reviewsoundguys.com/sony-linkbuds-fit-review-127506Read 8 October 2026Exact review use section explicitly says the tips are made from a single piece of silicone.

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

Not available

Fins3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

Ear tip fit test

Yes2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Manual page 10 explicitly measures ear-tip air-tightness to find optimal tips, distinct from general wearing-condition check.

Dust and water rating, buds

IP552Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

IPX44Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Exact Fit manual publishes IPX4 splash resistance for earbuds only. Sound conduit, air holes and microphone holes excluded. Charging case explicitly not water resistant.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

1 of 6 differ

Companion app

Nothing X2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Sony | Sound Connect3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

App platforms

Android, iOS2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Android, iOS3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

User firmware updates

Yes2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Yes3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

Finding network

Not available

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Not available

Dimensions and weight

3 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.

4.9g(0.2 oz)2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current Buds design table explicitly one-bud mass 4.9 g. Tip size is not stated. This is a maker claim, not a reviewer weight measurement.

4.9g(0.2 oz)1Maker product pagesony.co.uk/electronics/support/wireless-headphones-bluetooth-headphones/wf-ls910n/specificationsRead 5 October 2026Approximate one-earbud mass, including M ear tip and attached fitting supporter.3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Manual explicitly approximate one-earbud weight with M tip and fitting supporter.

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

Width20.2Height33.1Depth23.8mm(0.8 × 1.3 × 0.9 in)2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current Buds design table explicitly labels height 33.1, width 20.2 and depth 23.8 mm. Axis labels are retained without reordering by appearance.

Not available

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

46g(1.6 oz)2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current Case design table gives 46 g separately from the one-bud 4.9 g figure. No case-inclusive total is used.

41g(1.4 oz)1Maker product pagesony.co.uk/electronics/support/wireless-headphones-bluetooth-headphones/wf-ls910n/specificationsRead 5 October 2026Exact charging-case mass, separate from earbuds.3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Manual separately publishes charging-case weight, excluding earbud mass.

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

Width53.4Height53.4Depth23mm(2.1 × 2.1 × 0.9 in)2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current Case design table explicitly height and width 53.4 mm, depth 23 mm.

Not available

Certifications

0 of 3 differ

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

Hi-Res Audio Wireless2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026

Hi-Res Audio Wireless8Maker product pagesony.jp/headphone/products/LinkBuds_Fit/feature_2.htmlRead 8 October 2026Exact model describes wireless high-resolution playback through LDAC and names its Hi-Res Audio Wireless certification. 990 kbps LDAC high-res content condition, not a lossless claim.

Communication certifications

Not available

Not available

FCC IDs

Not available

AK8YY297514Owner's manualbhphotovideo.com/lit_files/1165249.pdfRead 8 October 2026Original Sony Reference Guide 5-058-500-11(1), ©2024 Sony, exact LinkBuds Fit/YY2975. Page 1 headset regulatory block explicitly FCC ID AK8YY2975. Public B&H mirror of original two-page maker PDF.

Other certifications

Not available

Not available

In the box

2 of 2 differ

In the box

Left and right earbuds, S, M and L ear tips, Charging case, Safety and warranty information, User guide2Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current table lists earbuds, S/M/L tips, charging case, safety/warranty information and user guide. Specific maker note says cable omitted from new sales starting May 15, 2025, with transitional retailer stock potentially retaining a cable. No cable is treated as a current standard item and no blanket absence is asserted for every stock revision.

Sony LinkBuds Fit earbuds with Air Fitting Supporters, Charging case, USB-A to USB-C cable, Documents, Soft fitting earbud tips (SS, S, M, L)3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Complete standard box list. Factory Air Fitting Supporters are attached. Separately sold covers/supporter colours and Olivia edition promotions excluded.

Cables included

ACMF Buds Pro 2

Not available

BSony LinkBuds Fit

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

Source3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026

Links

Not compared

Product page

us.nothing.tech/products/cmf-buds-pro-21Maker product pagecheckout-us.nothing.tech/products/cmf-buds-pro-2.jsRead 8 October 2026

www.sony.co.uk/headphones/products/linkbuds-fit2Maker product pagesony.co.uk/headphones/products/linkbuds-fitRead 5 October 2026Exact model maker product page. Fit is sealed-tip design.

Spec sheet

us.nothing.tech/products/cmf-buds-pro-22Maker product pageus.nothing.tech/products/cmf-buds-pro-2Read 8 October 2026Current US maker page embeds declarative product specification tables in its public HTML. These tables were decoded as source data without executing scripts or accessing a private API. Current claims belong to this selected sales listing, without asserting an independently tested physical revision.

www.sony.co.uk/electronics/support/wireless-headphones-bluetooth-headphones/wf-ls910n/specifications1Maker product pagesony.co.uk/electronics/support/wireless-headphones-bluetooth-headphones/wf-ls910n/specificationsRead 5 October 2026Full exact maker support technical table. Bluetooth transmission bandwidth is not acoustic frequency response. Unlabelled case dimensions are not assigned to width/height/depth. Published driver diameter is 8.4 mm, with dynamic technology separately documented. Physical quantity per earbud remains unproved. The driver row preserves the proved size/type without asserting a quantity, so total driver count remains unknown.

Manual

cdn.shopify.com/s/files/1/0585/5258/2321/files/Buds_Pro_2_User_Guide.pdf8Owner's manualcdn.shopify.com/s/files/1/0585/5258/2321/files/Buds_Pro_2_User_Guide.pdfRead 8 October 2026Official family-download index still links this original B172 V.1 user guide. It was read alongside current specifications. This URL is historical family guidance, not proof that current SKU 6974434225930 is B172. Only controls independently corroborated by current maker listing/support are represented. Original radio, FCC identity, charge estimates and numerical reviewer tests are not transferred to current hardware.

helpguide.sony.net/mdr/2975/v1/en/print.pdf3Owner's manualhelpguide.sony.net/mdr/2975/v1/en/print.pdfRead 5 October 2026Original exact English guide 154 pages. Box page 9, runtime page 28, specifications pages 153-154, app pages 124-125 inspected.

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

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.

1year11Maker product pageus.nothing.tech/pages/terms-of-salesRead 10 October 2026US direct-store terms section 6.8: headphones and other electronic devices carry a limited warranty of twelve months. Applies to purchases from the Nothing US site in the buyer's original country. The start date wording differs between sections 6.1 (delivery) and 6.8 (purchase). Statutory rights are separate.

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