Headsets and headphones / Compare

Bowers & Wilkins Px7 S3 vs CMF Headphone Pro

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Product A: Bowers & Wilkins

Px7 S3

75 of 161 known

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B

Product B: CMF

Headphone Pro

90 of 161 known

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Only differences

ABowers & Wilkins Px7 S3

BCMF Headphone Pro

General

5 of 8 differ

Series

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

301020-54-00-308, 301020-67-00-308, 301020-66-00-308, 301020-83-00-308, 301020-84-00-3081Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026US store part number 301020-54-00-308 for Anthracite Black. The colour swatches carry 301020-67-00-308 (Canvas White), 301020-66-00-308 (Indigo Blue), 301020-83-00-308 (Frost Blue) and 301020-84-00-308 (Vintage Maroon).

B175, 69744342267221Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026Original manufacturer FCC manual identifies B175. Current US maker variant payload labels Dark Grey SKU 6974434226722. The numeric SKU is not stored as a GTIN without a barcode label.26Maker spec sheet (PDF)s3.zoommer.ge/site/certificate/nothing-cmf-headphone-pro.pdfRead 8 October 2026The signed original maker EU Declaration of Conformity identifies physical model B175 and battery M653035. Regulatory model identity is independent of the US color SKU. The signature date is not a retail release date.

GTIN / EAN

Not available

Not available

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

24 April 20253Press articletheabsolutesound.com/articles/bowers-wilkins-announces-its-all-new-px7-s3Read 23 October 2026Launch announcement from Worthing, UK, dated April 24, 2025. North American price and availability came later.

29 September 202518Reviewsoundguys.com/the-cmf-headphone-pro-packs-high-end-specs-for-a-low-price-tag-145307Read 8 October 2026The September 29, 2025 launch report documents the announcement and separates UK/EU same-day availability from October 7 US availability. The partner press release corroborates the regional sales dates.

Status

Available1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026In stock on the maker US store at $479, with dealer links.

Available1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact Dark Grey US variant payload states availableForSale true.

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

Not available

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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

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

$4495Press articletechradar.com/audio/wireless-headphones/good-news-the-five-star-wireless-headphones-we-rate-higher-than-the-sony-wh-1000xm6-are-finally-available-to-order-in-the-usRead 23 October 2026News dated May 21, 2025: US price $449, orders from bowerswilkins.com, shipping from June 10, 2025. US dollars before sales tax. The maker US page now lists $479.

$9916Press releasestorage.mfn.se/194a0e7c-3d3b-4dc0-bde1-0e70c39715f9/audiodo-and-cmf-by-nothing-expand-partnership-with-new-headphone-pro.pdfRead 8 October 2026The September 30, 2025 Audiodo maker-partner release expressly lists USD 99 and US sales beginning October 7, 2025. Current retail prices and EU regional pricing are not 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.

€4296Reviewtomsguide.com/audio/bowers-and-wilkins-px7-s3-reviewRead 23 October 2026Review of April 24, 2025: on sale in the UK and EU that day, €429 in the EU. Country and tax treatment are not stated, so it is the EU price as reported.

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

US1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The current US maker store offers the exact Dark Grey reference.

ColoursiThe maker's own colour names

Anthracite Black, Canvas White, Indigo Blue, Frost Blue, Vintage Maroon1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Finishes: Canvas White, Anthracite Black, Indigo Blue, Frost Blue, Vintage Maroon. The launch range was Anthracite Black, Canvas White and Indigo Blue. Frost Blue and Vintage Maroon came later.

Dark Grey1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The reference is the original Dark Grey headset with its fitted Dark Grey cushions. Other headset finishes and separately sold cushion colors are excluded.

Segment

Music1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Sold as high-performance noise-cancelling wireless headphones for music, films and games, with sound quality as the focus.

Music1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker positions the product for music listening and audio playback.

Design

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Form factor

Over-ear1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Wearing style: Over-ear Noise Cancelling Headphones.

Over-ear1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker explicitly describes its first over-ear headphones.

Ear cup enclosureiClosed, open or semi-open acoustic enclosure. This does not describe how the headset folds.

Closed11Measurementrtings.com/headphones/reviews/bowers-wilkins/px7-s3Read 23 October 2026Public header: Enclosure Closed-Back, over-ear, wireless, noise cancelling, mic.

Closed11Spec databasesoundguys.com/product/cmf-by-nothing-headphone-proRead 8 October 2026The exact Acoustic Design field states Closed-back. Tom's Guide specifications corroborate this.

Wearing style

Headband4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026Describes a new headband and redesigned arm mechanism.

Headband1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker comfort section describes the adjustable headband. The original guide documents adjustment by sliding the arms.

FoldingiFlat means the ear cups rotate flat. Inward means the ear cups fold toward the headband.

Flat7Reviewexpertreviews.co.uk/technology/headphones-audio/bowers-wilkins-px7-s3-reviewRead 23 October 2026Build: the headphones fold flat only. The case is slimmer and semi-hard.

Flat12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The exact review states that the headphones rotate flat for storage but do not fold inward.

Swivelling ear cupsiEar cups can rotate relative to the headband. Tilting alone does not count.

Yes7Reviewexpertreviews.co.uk/technology/headphones-audio/bowers-wilkins-px7-s3-reviewRead 23 October 2026Fold flat only means the ear cups rotate flat. SoundGuys says the headphones lie flat in the case.8Reviewsoundguys.com/bowers-and-wilkins-px7-s3-review-an-unexpected-anc-heavyweight-142231Read 23 October 2026Headphones lie flat in the case.

Yes12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The exact design discussion explicitly describes flat rotation of the ear cups.

RGB lighting

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Lighting zonesiNumber of independently controllable lighting areas across both ear cups.

Not available

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Drivers and sound

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Driver type

Dynamic1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Drive units: 2 x 40mm dynamic full range bio cellulose driver.

Dynamic11Spec databasesoundguys.com/product/cmf-by-nothing-headphone-proRead 8 October 2026The exact product specifications explicitly state Dynamic driver. Voice-coil material alone is not used as transducer-type proof.

Driver sizeiDiameter of the largest sound driver. Do not use the microphone capsule diameter.

40mm1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Drive units: 2 x 40mm dynamic full range bio cellulose driver.

40mm1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Drivers table and Packed with Power section state 40 mm. The 16.5 mm copper voice coil is not a driver diameter.

Drivers per sideiNumber of sound-producing transducers in one side, excluding microphones.

11Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 20262 x 40 mm drive units across the two ear cups, so one per side.

Not available

Diaphragm material

Bio-cellulose1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Drive units: bio cellulose driver.

PEN+PU dome with nickel plating1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Diaphragm table states PEN+PU dome material and nickel plating. Magnet material is not stated.

Magnet

Not available

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Frequency response (wired or passive)iPublished acoustic range for wired listening, or the maker’s single range when no mode is distinguished. Power state and test standard belong in the source note.

Not available

Min20 HzMax20 kHz11Spec databasesoundguys.com/product/cmf-by-nothing-headphone-proRead 8 October 2026The exact product specifications state 20 to 20,000 Hz acoustic frequency response. Tom's Guide independently labels the same frequency response. No mode, tolerance, or test level is stated. The maker's ambiguous RF label is not used as transmission bandwidth proof.

Wireless audio transmission bandiFrequency range of audio transmitted over the wireless connection, not the acoustic response of the driver. Codec, sampling rate and bitrate conditions belong in the source note. When the maker gives a range per codec, the widest range is stored and its codec goes in the source note.

Not available

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Impedance (passive when specified)iUse the headset-off value for a passive analog connection when the maker publishes both powered and passive values. Note the power state and test frequency.

Not available

16Ω11Spec databasesoundguys.com/product/cmf-by-nothing-headphone-proRead 8 October 2026The exact product specifications state 16 ohms. The Tom's Guide specification table agrees. Frequency and powered/passive measurement state are unspecified. Unverified comparison sites give conflicting figures and are excluded.

Sensitivity (passive when specified)iUse the headset-off figure when both powered and passive values exist. The power or voltage reference, test distance and frequency belong in the source note.

Not available

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Sensitivity referenceiPublished power or voltage reference for sensitivity. Do not assume 1 mW when the source gives only a dB value.

Not available

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THD (claimed)iPublished distortion figure or numerical upper bound. The source note states any less-than sign and test level.

Not available

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Max input power

Not available

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Max digital audio sample rateiHighest supported digital audio sample rate over a USB cable or wireless dongle. This is not the microphone rate or acoustic frequency response.

96kHz2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Data sheet: USB audio up to 24 bits, 96 kHz.

Not available

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

24bits2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Data sheet: USB audio up to 24 bits, 96 kHz.

Not available

DAC

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Personalised soundiA manufacturer-supported hearing test or ear scan creates a device sound profile tailored to the listener. Generic equalizer adjustments do not count.

Not available

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact maker Personal Sound feature uses Audiodo to create a hearing profile through a three-minute test in Nothing X. The resulting profile is stored directly on the headphones and remains applied across connected devices. This is hearing-test personalization, separate from the manual three-band equalizer and Energy Slider.

Onboard EQiCustom playback EQ profiles stored in the headset and applied without the host app running. Note supported active connections. Receiver-only or software-only EQ does not count.

Not available

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Custom EQ bandsiNumber of bands in the custom playback equalizer. Microphone EQ bands are excluded.

51Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Technical features: 5 band customisable EQ + TrueSound mode.

312Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The exact reviewer reports a three-band custom EQ in Nothing X. Firmware 1.0.1.40. No advanced Headphone (1) parametric EQ is transferred.

EQ presets

Not available

Pop, Rock, Electronic, Enhance Vocals, Classical20Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact equalizer support article names five default profiles: POP, ROCK, ELECTRONIC, ENHANCE VOCALS, and CLASSICAL. Custom mode is not counted as a named preset. Marketing prose calls six preset EQs but does not name a sixth.

Volume limit

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Spatial audio

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Spatial audio supportiNamed headset or host spatial-audio systems that the maker or reviewer explicitly supports. A platform feature may require compatible hardware, software or a separate licence.

Not available

Static Spatial Audio: Cinema mode, Static Spatial Audio: Concert mode1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker explicitly names Static Spatial Audio with Cinema and Concert modes. These are supported headphone processing modes. No Dolby license or dynamic head tracking is inferred.

Spatial audio licence includediA paid spatial-audio licence is bundled or embedded. Compatibility with a separately purchased app does not count.

Not available

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Head tracking

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Noise cancelling

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Active noise cancelling

Yes1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Page title: noise-cancelling wireless headphones with advanced noise cancellation.

Yes5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact support article explicitly confirms Active Noise Cancellation.

ANC typeiFeedforward uses outside microphones. Feedback uses inside microphones. Hybrid uses both. Voice-call noise filtering is separate.

Hybrid1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Microphones: 4 mics per earcup (1x FB + 2x FF). FB is a feedback microphone and FF is a feedforward microphone, so the ANC uses both.3Press articletheabsolutesound.com/articles/bowers-wilkins-announces-its-all-new-px7-s3Read 23 October 2026Drive-unit microphones (feedback) and ambient microphones (feedforward) are both used.

Hybrid1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Noise Cancellation Type table states Hybrid ANC.

ANC microphonesiTotal microphones used for active playback noise cancellation across both sides. Do not substitute the total physical or voice microphone count.

61Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 20261 feedback and 2 feedforward microphones per earcup, which is 6 for ANC. The page counts 4 per earcup, 8 in total. The press launch says two microphones monitor the drivers and four monitor ambient noise.3Press articletheabsolutesound.com/articles/bowers-wilkins-announces-its-all-new-px7-s3Read 23 October 2026Eight microphones in total: two measure each drive unit's output, four monitor ambient noise and two handle voice clarity. That gives six for ANC.7Reviewexpertreviews.co.uk/technology/headphones-audio/bowers-wilkins-px7-s3-reviewRead 23 October 2026Two ambient microphones plus one internal microphone per ear cup, and a pair of voice microphones.

Not available

Adaptive ANCiNoise cancellation automatically changes with the environment or fit. Manually choosing a level does not count.

Not available

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker explains automatic movement between strong, moderate, and light cancellation based on surroundings. Adaptive is not counted as an extra manual strength level.

ANC levelsiNumber of adjustable cancellation strength steps. Off and transparency modes are excluded.

Not available

315Reviewtomsguide.com/audio/headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact ANC discussion names Low, Mid, High, and Adaptive within ANC On. Only the three fixed strength levels are counted. Adaptive, Transparency, and Off are excluded.

ANC attenuation (claimed)

Not available

40dB5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact ANC support article states up to 40 dB. Frequency, weighting, and test method for this maximum are unspecified. The technical table also lists 2000 Hz as Frequency range, which does not establish a measurement frequency. The separate 99% marketing limit is not converted to dB.

Transparency mode

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 3.1: Ambient Pass-Through mode lets you hear outside sound without removing the headphones.3Press articletheabsolutesound.com/articles/bowers-wilkins-announces-its-all-new-px7-s3Read 23 October 2026Modes are Off, Pass-Through and On, with a transparency mode in the app.

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker expressly documents Transparency Mode to hear surroundings.

Adjustable transparency

Not available

Not available

Conversation detectioniAudio pauses or lowers automatically when the wearer speaks. Voice assistant activation does not count.

Not available

Not available

Wind noise reduction

Not available

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Noise Cancellation Features table states Wind Noise Conduction Mesh. This is a physical mesh feature, not an inferred selectable wind-processing mode.

Measured

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Frequency response notesiMeasured by a reviewer, not claimed by the maker

Boosted bass sound signature. The bass is very emphasized and the treble slightly underemphasized against the RTINGS target.11Measurementrtings.com/headphones/reviews/bowers-wilkins/px7-s3Read 23 October 2026Public header, methodology v2.3, reviewed 2026-01-20: Sound Signature Boosted Bass. Test settings and the full curve are member-only and were not used.

Changing the bass slider from minimum to maximum increases low-frequency output. The reviewer reports upper-frequency roll-off above about 8 kHz.12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026SoundGuys compares minimum and maximum bass-slider responses against its preference curve. Firmware 1.0.1.40. Host and codec are unspecified. The reported approximately 8 dB slider difference is not converted into a target-relative averaged bass metric.

Bass amountiReviewer’s bass deviation from its stated target. Positive is more bass. Target and test method belong in the source note.

7dB11Measurementrtings.com/headphones/reviews/bowers-wilkins/px7-s3Read 23 October 2026Public header: Bass Amount Very Emphasized (7 dB) against the RTINGS target curve.

Not available

Treble amountiReviewer’s treble deviation from its stated target. Positive is more treble. Target and test method belong in the source note.

-3dB11Measurementrtings.com/headphones/reviews/bowers-wilkins/px7-s3Read 23 October 2026Public header: Treble Amount Slightly Underemphasized (-3 dB) against the RTINGS target curve.

Not available

Deviation from targetiReviewer’s full-range error from its target curve. Do not substitute a regional bass or treble error.

Not available

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Consistency between fittingsiReviewer’s standard deviation across repeated fittings. Test rig and fitting procedure belong in the source note.

Not available

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Harmonic distortioniIndependently measured harmonic distortion, with test level and method in the source note.

Not available

Not available

Sound leakageiIndependently measured leakage at 30 cm. Playback level and method belong in the source note.

Not available

Not available

Measured noise isolationiIndependently measured attenuation. Positive values mean more noise reduction. ANC state, rig and frequency bands belong in the source note.

Not available

Not available

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

Not available

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

Not available

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Mic quality notesiMeasured by a reviewer, not claimed by the maker

Call quality is on par with competitors. The microphones reject some noise while keeping voice quality, but will not match a dedicated studio microphone.8Reviewsoundguys.com/bowers-and-wilkins-px7-s3-review-an-unexpected-anc-heavyweight-142231Read 23 October 2026Review published 2025-08-13 and updated 2025-11-19. Mic demos in office, street, windy and reverberant settings. The reviewer calls call quality on par with competitors. No microphone measurements are given.

Recorded calls remain intelligible, but speech sounds unnatural and includes some pops and crackles.12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The exact reviewer reports intelligible speech and noise rejection with some pops and crackles. Recordings cover ideal, office, street, wind, and reverberant conditions. Firmware 1.0.1.40. Host, codec, and call processing settings are unspecified.

Mic low-frequency extensioniMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic high-frequency extensioniMeasured by a reviewer, not claimed by the maker

Not available

Not available

Mic speech-to-noise ratioiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Measured latencyiEnd-to-end latency measured by a reviewer for a specific connection, platform and codec. Firmware, method and operating mode belong in the source note.

Not available

Not available

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

Not available

Not available

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

Not available

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Measured battery lifeiReviewer’s continuous playback test. State the connection, ANC and lighting where known. Unknown settings stay omitted and are described in the source note.

ABowers & Wilkins Px7 S3

Connection	ANC	Hours (h)
Bluetooth	Yes	31.92

Source9Measurementsoundguys.com/bowers-and-wilkins-px7-s3-vs-apple-airpods-max-149910Read 23 October 2026SoundGuys test track of real music peaking at 75 dB SPL, ANC on, 31 hours 55 minutes. The article does not name the codec. The only wireless connection is Bluetooth. RTINGS gives 29 hours in its verdict text and does not state its settings in the public part.

BCMF Headphone Pro

ANC	Hours (h)
Yes	43.15
Yes	49.5

Source12Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026First row: SoundGuys standardized test measured 43 hours 9 minutes with ANC on. Firmware 1.0.1.40, one-week supplied review unit. Connection, host, codec, playback level, and ANC strength are unspecified. Second row has a separate TechRadar source below.14Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026TechRadar depleted a full battery and measured 49.5 hours with ANC enabled during its four-week review. Its source devices include MacBook Pro, iPhone 15 Pro Max, and FiiO M15S, but the exact battery-test connection, codec, volume, ANC strength, and firmware are unspecified. The separate row is not pooled with SoundGuys.

Battery life (measured, max)iMeasured by a reviewer, not claimed by the maker

31.92h=CalculatedFrom Measured battery life

49.5h=CalculatedFrom Measured battery life

Clamping forceiMeasured by a reviewer, not claimed by the maker

Not available

Not available

Weight (measured)iIndependently weighed headset. A review that repeats the maker’s number does not qualify. Cable and microphone inclusion belong in the source note.

Not available

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Microphone

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

Built-in1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Page: 8 microphones in the ear cups. No boom.

Built-in6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The controls and call documentation describe the on-headphone microphone, including its configurable on/off function. No detachable boom is supplied.25Reviewrtings.com/headphones/reviews/cmf/headphone-proRead 8 October 2026The exact public Office Work verdict explicitly describes an integrated microphone. No boom or in-line microphone is substituted.

Microphone element

Not available

Not available

Microphone pickup patterniUse the maker’s exact named pattern. Unidirectional does not establish whether the capsule is cardioid, supercardioid or hypercardioid.

Not available

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Voice microphonesiTotal microphones used for voice pickup or beamforming across both sides. ANC-only microphones are excluded.

Not available

31Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The feature table states a three-microphone ENC architecture for calls. Its separate five-microphone total is not substituted for this voice count or an unproven ANC count.

Total microphonesiEvery physical microphone across the headset, including call, ANC and calibration microphones. Shared microphones count once. Excludes microphones in charging cases or receivers, and vibration sensors. Use an explicitly published physical total, never a sum of overlapping role counts.

81Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Microphones: 8 mics total, 4 per earcup. The voice-only count is not stored. The page says all mics are used for talk, while the launch coverage names two voice microphones.

528Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact maker Noise Cancellation technical table explicitly states 5 MICS TOTAL. This is the complete physical headset total. The separate three-microphone ENC call architecture remains a voice-role count, and no ANC count is derived from those overlapping roles.

Mic frequency responseiAcoustic microphone response, not its digital sampling rate. Connection-specific ranges belong in the source note.

Not available

Not available

Mic sensitivityiPublished microphone sensitivity. Reference such as dBV/Pa or dBFS, frequency and distance belong in the source note.

Not available

Not available

Mic signal-to-noiseiPublished microphone signal-to-noise ratio. Minimum or typical conditions belong in the source note.

Not available

Not available

Mic sample rateiExplicitly published digital microphone capture or speech sampling rate. State the audio route in the source note, or say it is unpublished. Internal capture does not prove the effective rate on every connection. Acoustic bandwidth, playback rate and generic microphone-chip capability do not qualify.

Not available

Not available

Mic noise reductioniProcessing that removes noise from transmitted speech. Playback ANC and a directional microphone alone do not count.

Not available

Not available

Flip to mute

Not available

Not available

Mute button

Not available

Yes6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The support controls list explicitly includes Mic on/off as an optional configurable button function on all platforms. This requires selecting the function in the app.

Mute indicatoriPublished indication of microphone mute. mechanical_marker is a visible physical marker showing the microphone's mute-switch position. LED options require an electronic light. The in-line controller option is for a mute light on a cable remote.

Not available

Not available

Sidetone

Not available

No13Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact Don't buy section explicitly says the product lacks sidetone for hearing your own voice during calls.

Adjustable sidetone

Not available

Not available

Foam microphone windscreeniA foam cover for the voice microphone. An internal metal mesh pop filter does not count.

Not available

Not available

Connectivity

9 of 20 differ

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

Bluetooth, USB, Analog2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Bluetooth, the USB-C to USB-C cable (USB audio) and the USB-C to 3.5 mm cable (analog source).

Analog, Bluetooth5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact Audio formats and wired connection articles document Bluetooth and analog AUX playback. USB-C is charging only.

Analog source plugsiAnalog plug(s) supplied for the source device, including adapters. The headset-side jack is listed separately.

3.5 mm TRS2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 7.1.1: the supplied cable has a 3.5 mm stereo jack for a source with an analog output.

Not available

Cable connector on headsetiConnection used by the playback cable at the headset. A fixed cable is not replaceable through a headset jack.

USB-C2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 7.1.1: the audio cable plugs into the USB-C socket on the right earcup.

3.5 mm10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original guide expressly labels the left ear cup 3.5 mm Audio In.

Longest included cableiLength of the longest supplied cable, including charging and dongle cables. Individual cable lengths are listed in Cables included.

1.2m1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026In box: 1.2m USB-C to 3.5mm stereo jack audio cable and 1.2m USB-C to USB-C cable.

1.2m1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker package inventory contains only the supplied 1.2 m analog cable. The reviewer's approximate 2.7-foot cable description does not override the manufacturer claim.

Headset USB plug or portiUSB plug or port on the headset or its included wired audio adapter. A charging-only USB port can appear here.

USB-C2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026USB-C socket on each earcup, one for the charging and USB cable and one for the audio cable.

USB-C10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original English Quick Start Guide identifies USB-C Charge In on the right ear cup.

Audio over USB-C cableiPlayback through a USB-C cable or included wired USB-C audio adapter. A charging-only USB-C port does not count.

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 7.1.2: the headphones work as a USB sound output when connected to a computer with the USB-C cable.

No5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact wired connection article expressly says 3.5 mm aux-in is supported and USB-C Audio is not.

Passive wired listeningiAnalog playback works with the headset powered off or its battery empty. An active analog converter that needs headset power does not count.

No2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Note in 7.1.1: the headphones must have enough charge and be on to play from an analog source.6Reviewtomsguide.com/audio/bowers-and-wilkins-px7-s3-reviewRead 23 October 2026No option for wired listening when the battery is dead.

No13Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact review explicitly states that wired 3.5 mm listening requires the headphones powered on and does not work passively.

Wireless receiveriDedicated wireless audio receiver or dongle. A wired USB sound card does not count.

None2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026No dongle or receiver in the box.

Not available

Wireless receiver connectoriPhysical USB connector on the receiver. Supplied extension cables and adapters are explained in the source note. Both means two native connector types.

Not available

Not available

Wireless range (claimed)iMaker’s advertised wireless range. Connection and indoor or outdoor conditions belong in the source note. Measured distance is not stored here.

Not available

10m1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Connection range table states 10 m. Indoor or line-of-sight test conditions are not specified. The Tom's Guide generic Bluetooth 800-foot statement is excluded.

Bluetooth

5.31Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Technical features: Bluetooth 5.3 with aptX Lossless technology.

5.45Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact Bluetooth version article states Bluetooth 5.4.

Bluetooth codecsiNamed Bluetooth audio codecs supported by this exact model. Host, firmware and operating-mode restrictions belong in the source note.

SBC, AAC, aptX Classic, aptX HD, aptX Adaptive, aptX Lossless1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Bluetooth codecs: aptX Lossless, aptX Adaptive, aptX HD, aptX Classic, AAC, SBC. SoundGuys says iOS uses AAC only and Android can use the aptX codecs.

SBC, AAC, LDAC5Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact Audio formats article expressly lists SBC, AAC, and LDAC. iOS lacks LDAC support according to the separate LDAC instructions.6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The exact LDAC instructions state 96 kHz, 24-bit, and 990 kbps for Bluetooth streaming with a compatible Android phone and high-quality audio enabled. Higher-bitrate LDAC recommends disabling Dual Connection. These limits apply to LDAC Bluetooth playback. The headset does not support USB-C cable audio.

LE AudioiLE Audio playback support. Bluetooth Low Energy for app control alone does not count.

Not available

Not available

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

Not available

Not available

Bluetooth multipointiCan remain connected to multiple Bluetooth source devices at once. Mixing Bluetooth with a proprietary dongle is a separate field. A maker's dual connection to two Bluetooth devices at once counts.

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Data sheet lists multipoint connection. Section 5.3: paired with up to two devices, with audio from one at a time.

Yes6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The exact Dual Connection instructions document two simultaneous Bluetooth source connections with audio switching. This is disabled by default and requires enabling in Nothing X.

Multipoint devicesiNumber of Bluetooth source devices connected at once, not the number remembered for later pairing.

22Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 5.3: up to two devices, audio plays from one at a time.

26Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The instructions repeatedly specify two connected devices. A third device can preempt one connection. This is not three simultaneous devices or pairing memory.

Paired devices remembered

Not available

Not available

Mixes 2.4 GHz and Bluetooth audioiPlays both wireless audio streams at the same time. Automatic switching or Bluetooth standby does not count.

Not available

Not available

Fast pairing

Google Fast Pair2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 5.1.3: pairs with compatible Android devices using Google Fast Pair.

Google Fast Pair, Microsoft Swift Pair23Maker product pagesupport.nothing.tech/hc/en-us/articles/38910344910225-Does-CMF-Headphone-Pro-support-Google-Fast-PairRead 8 October 2026The exact product support article explicitly confirms the named quick-pairing feature. Google Fast Pair needs a compatible Android source. Microsoft Swift Pair is the Windows route. Neither adds USB audio.24Maker product pagesupport.nothing.tech/hc/en-us/articles/38910328918545-Does-CMF-Headphone-Pro-support-Mircosoft-Swift-PairRead 8 October 2026The exact product support article explicitly confirms the named quick-pairing feature. Google Fast Pair needs a compatible Android source. Microsoft Swift Pair is the Windows route. Neither adds USB audio.

Base station

Not available

Not available

Latency

2 of 2 differ

Low latency modeiA selectable mode intended to reduce audio delay. A low-latency connection without a distinct mode does not count.

Not available

Yes7Maker product pagesupport.nothing.tech/hc/en-us/articles/38910343614737-Does-CMF-Headphone-Pro-support-low-latency-modeRead 8 October 2026The exact support article confirms low-latency mode.

Claimed latencyiMaker’s claimed delay for the stated connection and mode. Minimum claims and host restrictions belong in the source note.

ABowers & Wilkins Px7 S3

Not available

BCMF Headphone Pro

Connection	Mode	Latency (ms)
Bluetooth	Game Mode on Nothing Phone	120

Source7Maker product pagesupport.nothing.tech/hc/en-us/articles/38910343614737-Does-CMF-Headphone-Pro-support-low-latency-modeRead 8 October 2026The maker states less than 120 ms when connected to a Nothing Phone in Game Mode. The stored value is the upper bound of that claim, not a measured result. Codec and firmware are unspecified. Generic analog zero-latency reviewer prose is not stored as an end-to-end result.

Compatibility

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Compatible platformsiPlatforms with a documented audio path. This does not imply every connection or microphone function works. Platform editions must be checked individually.

iOS, Android, Windows, macOS2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Sections 5.1.1 and 5.1.2: iPhone, Mac, PC and Android pairing. The app is for iOS and Android.

Android, iOS, Windows, macOS20Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026Exact maker compatibility support names Android 6.0 or later and iOS 13 or later. Swift Pair support and exact SoundGuys setup instructions establish Windows Bluetooth. The exact Tom's Guide reviewer listened through the supplied analog cable on a MacBook Air M2. No console route is inferred from a physical jack.21Reviewtomsguide.com/audio/headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026Exact maker compatibility support names Android 6.0 or later and iOS 13 or later. Swift Pair support and exact SoundGuys setup instructions establish Windows Bluetooth. The exact Tom's Guide reviewer listened through the supplied analog cable on a MacBook Air M2. No console route is inferred from a physical jack.

Connection per platformiOnly explicitly documented playback paths for the exact model. Microphone support is separate. Leave unknown microphone support omitted. An Xbox and a PlayStation edition of one headset can connect differently, so it is per variant.

ABowers & Wilkins Px7 S3

Platform	Connection
iOS	Bluetooth
Android	Bluetooth
Windows	Bluetooth
macOS	Bluetooth
macOS	USB

Source2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Bluetooth pairing for iPhone, Mac, PC and Android. Section 7.1.2 adds USB audio and a Mac setup note. Microphone use per platform is not stated.

BCMF Headphone Pro

Platform	Connection	Microphone works
Android	Bluetooth	Yes
iOS	Bluetooth	Yes
Windows	Bluetooth	Not available
macOS	Analog	No

Source20Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026Android/iOS Bluetooth playback and voice calls are explicitly documented by maker compatibility and controls articles. Windows Bluetooth is documented by exact Swift Pair and reviewer pairing instructions. The exact Tom's Guide reviewer used analog playback on a MacBook Air M2 and explains that the supplied cable does not carry headphone microphone calls. Unknown Windows microphone behavior is omitted.21Reviewtomsguide.com/audio/headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026Android/iOS Bluetooth playback and voice calls are explicitly documented by maker compatibility and controls articles. Windows Bluetooth is documented by exact Swift Pair and reviewer pairing instructions. The exact Tom's Guide reviewer used analog playback on a MacBook Air M2 and explains that the supplied cable does not carry headphone microphone calls. Unknown Windows microphone behavior is omitted.

Official licence

Not available

Not available

Battery and charging

8 of 13 differ

Battery capacityiRated capacity of one headset battery. Do not use case, receiver or total multi-battery capacity.

Not available

720mAh4Maker product pagesupport.nothing.tech/hc/en-us/articles/38910303499409-What-is-the-battery-capacity-of-CMF-Headphone-ProRead 8 October 2026The exact support article states 720 mAh. The maker technical table agrees. Rated versus typical capacity is not specified. This is the headset battery, not a nonexistent case battery.

Swappable batteryiBattery can be exchanged by the user as part of normal operation. Service or recycling disassembly does not count.

No8Reviewsoundguys.com/bowers-and-wilkins-px7-s3-review-an-unexpected-anc-heavyweight-142231Read 23 October 2026Earpads and headband padding are replaceable. The battery and USB-C port are not.

No10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original English safety section expressly instructs users not to replace the battery themselves. Normal battery hot swapping is unsupported.

Batteries includediNumber of headset batteries supplied, including the one already installed.

Not available

Not available

Claimed battery lifeiMaker’s maximum playback time per stated connection, codec, ANC, spatial audio and lighting settings. Name the spatial processing mode and other conditions in the source note. Unknown settings stay omitted.

ABowers & Wilkins Px7 S3

Connection	ANC	Hours (h)
Bluetooth	Yes	30

Source1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 202630 hours playback. The manual says 30 hours is with noise cancellation on at medium volume.2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Intro: up to 30 hours of wireless streaming with noise cancellation on at medium volume levels. Bluetooth codec is not stated.

BCMF Headphone Pro

Connection	ANC	Codec	Hours (h)
Bluetooth	No	AAC	100
Bluetooth	Yes	AAC	50
Bluetooth	No	LDAC	70
Bluetooth	Yes	LDAC	38

Source2Maker product pagesupport.nothing.tech/hc/en-us/articles/38910279111569-What-s-the-battery-life-of-CMF-Headphone-ProRead 8 October 2026The exact support article separately names AAC and LDAC playback with ANC off/on. The current maker technical table matches all four rows at 50% volume. Nothing laboratory temperature is 25°C. The support footnote says AAC even beneath LDAC rows, so the explicitly labelled codec rows govern. Talk and standby durations are excluded. The copied product disclaimer erroneously states 50 hours with ANC off and is not used.

Battery life (claimed, max)

30h=CalculatedFrom Claimed battery life

100h=CalculatedFrom Claimed battery life

Battery life with ANC (claimed)

30h=CalculatedFrom Claimed battery life

50h=CalculatedFrom Claimed battery life

Battery life without ANC (claimed)

Not available

100h=CalculatedFrom Claimed battery life

Charging port

USB-C2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 4: USB-C socket on the left earcup.

USB-C10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original guide charging diagram identifies USB-C Charge In. Current exact support limits charging input to 5 W.

Full charge timeiPublished time to fully charge a depleted headset. In-use charging can take longer.

120min2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 4: wait up to 2 hours for a full charge.

120min1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Charging table states Type-C wired charging to full in 120 minutes. The feature text says under two hours. The numeric table estimate is retained without using the copied case-related disclaimer.

Quick charge timeiCharge duration in the maker’s quick-charge claim. Read together with Quick charge playback.

15min1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 202630 hours playback, 7 hours with a 15 min charge.

5min3Maker product pagesupport.nothing.tech/hc/en-us/articles/38910318874897-Does-CMF-Headphone-Pro-support-fast-chargingRead 8 October 2026The exact current support article states a five-minute charge. The maker technical table agrees.

Quick charge playbackiPlayback gained from Quick charge time. Charger power, codec, volume and ANC conditions belong in the source note.

7h1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 202630 hours playback, 7 hours with a 15 min charge.

8h3Maker product pagesupport.nothing.tech/hc/en-us/articles/38910318874897-Does-CMF-Headphone-Pro-support-fast-chargingRead 8 October 2026Five minutes gives eight hours with ANC off or four hours with ANC on. The stored maximum is eight hours with ANC off, AAC, 50% volume, and 25°C laboratory temperature. Marketing prose and older announcements quote four or five hours without consistent ANC conditions and are excluded.

Use while charging

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 4: the headphones can be used while charging.

Not available

Charging dock or stand

Not available

Not available

Controls

4 of 6 differ

Controls

Buttons2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Right earcup has volume up, volume down and a multifunction button. The left earcup has a power slider and a quick action button.

Buttons, Volume wheel, Slider6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The original guide and current support describe Power/BT and shortcut buttons plus a pressable Roller that controls volume. A separate physical Energy Slider adjusts bass or treble after selecting its tuning mode in Nothing X.

Volume control

Buttons2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Volume up and volume down buttons on the right earcup.

Wheel6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The exact volume article states rolling the knob up/down adjusts playback volume.

Game and chat mixiBalances separate game and chat audio streams. Mixing Bluetooth and dongle source volume alone does not count. Supported platforms belong in the source note.

Not available

Not available

Remappable controlsiOn-device button, touch or dial functions can be reassigned. Changing EQ alone does not count.

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 6.2.5: the quick action button can be customised in the app.

Yes6Maker product pagesupport.nothing.tech/hc/en-us/sections/38910365859601-How-toRead 8 October 2026The support controls list provides optional button functions and bass/treble tuning for the Slider through Nothing X. Essential Space requires Nothing OS.

Wear detection

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 3.3: wear sensors on both sides pause playback and enter low power standby when removed.

No15Reviewtomsguide.com/audio/headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact specification table and design discussion explicitly state no wear detection.

Voice assistant

Voice assistant of the connected device2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 3.2: the quick action button can call the voice assistant of the connected device.

ChatGPT27Maker product pagesupport.nothing.tech/hc/en-us/articles/39520905948689-Why-can-t-I-use-ChatGPT-on-CMF-Headphone-ProRead 8 October 2026The exact CMF Headphone Pro support article documents a configurable button shortcut to ChatGPT Voice. Requires a compatible Nothing or CMF phone, current phone system and Nothing X app, an installed signed-in ChatGPT app, and prior use of ChatGPT Voice. This is phone-app integration, not an independent on-headphone assistant. Unnamed generic phone assistants are not converted into specific Siri or Google Assistant claims.

Comfort and build

7 of 11 differ

Headband type

Padded4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026The headband is described as nicely padded, with a new headband and arm mechanism. The inner section of the headband can be replaced.

Padded13Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact design discussion describes cushioning across the headband and ear pads.

Headband material

Fabric outer, memory foam padding under synthetic leather4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026Fabric around the outside of the headband and earcups, with pleather over memory foam at the contact points.

PU synthetic leather and memory foam13Reviewtechradar.com/audio/wireless-headphones/cmf-by-nothing-headphone-pro-reviewRead 8 October 2026The exact design section describes polyurethane synthetic leather and memory foam across the headband and ear pads. Steel reinforcement is independently identified by maker support.

Frame material

Not available

ABS plastic shell, PA+GF sliding arms, stainless steel headband strips8Maker product pagesupport.nothing.tech/hc/en-us/articles/38910349693841-What-material-is-the-outer-casing-of-CMF-Headphone-Pro-made-ofRead 8 October 2026The exact material article identifies ABS shell, PA+GF sliding arms, and stainless steel headband strips. The SoundGuys all-plastic description does not override these published internal reinforcement materials.

Ear cup material

Plastic with fabric finish10Spec databasesoundguys.com/product/bowers-and-wilkins-px7-s3Read 23 October 2026Spec table: ear cups pleather over memory foam. Tom's Guide describes premium-feeling plastic and the maker lists a fabric finish.

Not available

Ear pad material

Memory foam with synthetic leather4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026Pleather over memory foam contact points.6Reviewtomsguide.com/audio/bowers-and-wilkins-px7-s3-reviewRead 23 October 2026Memory foam earcups with soft synthetic alternatives, no leather.

PU leather with high-resilience memory foam9Maker product pagesupport.nothing.tech/hc/en-us/articles/38910322756881-What-material-are-the-ear-cushions-of-CMF-Headphone-Pro-made-ofRead 8 October 2026The exact cushion material article specifies polyurethane synthetic leather covering and high-resilience memory foam fill.

Replaceable ear pads

Yes4Reviewtechradar.com/audio/headphones/bowers-wilkins-px7-s3-reviewRead 23 October 2026The inner section of the headband and the earpads can be removed and replaced by a trained service engineer, not by the user.8Reviewsoundguys.com/bowers-and-wilkins-px7-s3-review-an-unexpected-anc-heavyweight-142231Read 23 October 2026Earpads and headband padding are replaceable.

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker states that cushions twist on and off for cleaning and replacement. Optional colored cushions are sold separately.

Ear pad attachmentiHow a replacement ear pad attaches to the ear cup, not how the decorative outer cover attaches. A press-fit or snap-on pad counts as clip.

Not available

Twist lock1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker describes twisting cushions on and off. Exact SoundGuys review confirms the rotating attachment. This is a twist-lock attachment rather than a clip or magnetic mount.

Ear pad openingiUsable opening inside an ear pad, excluding the outer cushion. Depth is the internal space between pad surface and driver cover.

Not available

Not available

Ear tips included

Not available

Not available

Dust and water rating

Not available

IPX220Maker product pagesupport.nothing.tech/hc/en-us/sections/38910294951441-Product-FeatureRead 8 October 2026The exact Water/dust resistance support article states IPX2 under IEC 60529. There is no certified dust protection. The TechRadar no-IP-rating claim is contradicted by the maker and is not used.

User-replaceable parts

Not available

Ear cushions1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker explicitly permits swapping and cleaning the ear cushions. The original manual prohibits user battery replacement.

Software

2 of 3 differ

Companion app

Bowers & Wilkins Music2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 6: Bowers & Wilkins Music app.

Nothing X1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The Nothing X app section names Nothing X.

App platforms

iOS, Android2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 6: free for iOS and Android.

Android, iOS1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker app section expressly says Android and iOS. Individual features have phone, OS, and app requirements.

User firmware updates

Yes2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Section 6.3: software updates are delivered through the app.

Yes1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker app section documents firmware update management.

Dimensions and weight

1 of 2 differ

Headset weightiPublished headset mass without detachable cable or microphone when stated. A fixed cable remains included. Any unqualified maker weight is identified in the source note.

300g(10.6 oz)1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Net weight 300g (without carry case).

283g(10 oz)1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The labelled Headphones weight table states 283 g. This is the maker claim. Cushion weight is a separate 45 g entry with unspecified quantity scope and is not added to headset mass.

Headset dimensionsiBody size with headband upright and ear cups in their normal wearing position. Width is across the head, height is top to bottom, and depth is front to back. Folded or flat-swivel dimensions are not substituted.

Not available

Not available

Certifications

2 of 3 differ

Hi-Res Audio

Not available

Hi-Res Audio, Hi-Res Audio Wireless1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The maker expressly claims wired and wireless Hi-Res certifications. Wireless high-resolution playback requires a compatible LDAC source.

Communication certifications

Not available

Not available

FCC ID

Not available

2AZEQ-B17510Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original regulatory document identifies exact FCC ID 2AZEQ-B175. Radio transmit power is not treated as audio amplifier power.

Other certifications

Apple MFi (Made for iPhone)2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Data sheet technical features: Apple MFi Made For iPhone.

EU RED 2014/53/EU, EU RoHS 2011/65/EU and 2015/86326Maker spec sheet (PDF)s3.zoommer.ge/site/certificate/nothing-cmf-headphone-pro.pdfRead 8 October 2026English declaration page 2 lists RED 2014/53/EU and RoHS 2011/65/EU and 2015/863. These are maker declarations for B175, not inferred Bluetooth SIG or extra market-availability claims.

In the box

3 of 3 differ

In the box

Px7 S3 wireless over-ear headphones, Carry case, USB-C to USB-C charging cable, USB-C to 3.5 mm audio cable, Documentation1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026In box accessories: 1.2m USB-C to 3.5mm stereo jack audio cable, 1.2m USB-C to USB-C cable, carry case. The manual also lists the documentation.

CMF Headphone Pro, Carry pouch, User guide, Safety and warranty information, 3.5 mm to 3.5 mm audio cable (1.2 m)1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact In the box table lists the headset, pouch, guide, safety/warranty information, and one 1.2 m analog cable. No USB charging cable or wall charger is listed. Exact TechRadar review independently confirms both omissions.

Cables includediSupplied playback, charging, dongle and adapter cables. A permanently attached headset cable is included and named as fixed.

ABowers & Wilkins Px7 S3

Type	Length (m)	Count
USB-C to USB-C cable	1.2	1
USB-C to 3.5 mm stereo jack audio cable	1.2	1

Source1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Both 1.2 m cables are listed under in box accessories.

BCMF Headphone Pro

Type	Length (m)	Count
3.5 mm to 3.5 mm audio cable	1.2	1

Source1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact package table lists one 3.5 mm to 3.5 mm audio cable, 1.2 m long. No charging cable is supplied. Contact arrangement is not inferred from nominal plug size.

Carrying caseiSupplied carrying case or pouch. A retail carton does not count as a carrying case.

Hard1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026Carry case is in the box. Tom's Guide calls it a hard case. Expert Reviews calls it semi-hard.6Reviewtomsguide.com/audio/bowers-and-wilkins-px7-s3-reviewRead 23 October 2026Verdict lists the best hard case yet. The case has a magnetically closing section for the cables.

Soft22Reviewsoundguys.com/cmf-headphone-pro-review-a-solid-b-side-146595Read 8 October 2026The maker box table supplies a Carry Pouch. Exact SoundGuys and TechRadar reviews explicitly describe a cloth/fabric travel bag. This is a soft pouch, not a hard case.

Links

Not compared

Product page

www.bowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.html1Maker product pagebowerswilkins.com/en-us/product/over-ear-headphones/px7-s3/301020.htmlRead 23 October 2026

us.nothing.tech/products/cmf-headphone-pro1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The exact US Dark Grey selector and public variant payload identify this reference. No Headphone (1) or Headphone (a) values are transferred.

Spec sheet

Not available

us.nothing.tech/products/cmf-headphone-pro1Maker product pageus.nothing.tech/products/cmf-headphone-proRead 8 October 2026The public page payload contains labelled technical specification tables. No separate exact maker datasheet was found. These tables were read from the normally downloaded page HTML.

Manual

werner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdf2Owner's manualwerner-musica.com/wp-content/uploads/2025/06/Px7S3_Manual_.pdfRead 23 October 2026Owner's manual, Spanish copy hosted by a retailer, with the data sheet on the last page. An English copy exists on the maker support site.

fccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdf10Owner's manualfccid.io/2AZEQ-B175/User-Manual/Users-Manual-8638814.pdfRead 8 October 2026The original 44-page manufacturer FCC exhibit combines safety/warranty information with the multilingual Quick Start Guide. Cover explicitly identifies model B175. This is not a generated third-party manual.

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

Not available

Not available

Warranty

1 of 1 differ

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

Not available

1year19Maker product pageus.nothing.tech/pages/terms-of-salesRead 8 October 2026Current US Terms of Sale section 6.8 gives headphones twelve months of limited warranty. This covers the original US maker-store purchase. Statutory rights and other regions are separate.

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