Earbuds / Compare

Bowers & Wilkins Pi8 vs Sennheiser ACCENTUM True Wireless

A

Product A: Bowers & Wilkins

Pi8

75 of 166 known

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B

Product B: Sennheiser

ACCENTUM True Wireless

86 of 166 known

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Only differences

ABowers & Wilkins Pi8

BSennheiser ACCENTUM True Wireless

General

6 of 8 differ

Series

Pi1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026The page lists the Pi6 as archived in its comparison. The Pi8 is the current Pi flagship.

ACCENTUM5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026The release places ACCENTUM True Wireless in the ACCENTUM family next to ACCENTUM Wireless and ACCENTUM Plus Wireless.

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

300965-54-00-309, 300965-58-00-309, 300965-57-00-309, 300965-40-00-309, 300965-77-00-309, 300965-78-00-3091Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026US store finishes. The page default finish Midnight Blue is 300965-40-00-309. The store variation data gives Anthracite Black -54, Dove White -58, Jade Green -57, Dark Burgundy -77 and Pale Mauve -78, each ending -00-309.

ATW1, ATW1 R, ATW1 L, ATW1 C, 700262, 700263, 7002641Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: article numbers 700262 (Black), 700263 (White) and 700264 (Blue).2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Order names ATW1 Black, ATW1 White and ATW1 Blue with article numbers 700262, 700263 and 700264.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Cover: ATW1, ATW1 R, ATW1 L and ATW1 C.4Regulatory filingcdn.sennheiser-hearing.com/product-documents/product-downloads/accentum-true-wireless/safety_instruction/Compliance_Information_ACCENTUM_True_Wireless.pdfRead 16 October 2026Models ATW1, ATW1 R, ATW1 L and ATW1 C.7Maker product pageus.sennheiser-hearing.com/products/accentum-true-wireless.jsRead 16 October 2026US store SKUs 700262 (Black), 700263 (White) and 700264 (Blue).

GTIN / EAN

Not available

4260752331241, 4260752331258, 4260752331265, 810091271148, 810091271155, 8100912711622Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Technical Data table: EAN 4260752331241, 4260752331258 and 4260752331265 and UPC 810091271148, 810091271155 and 810091271162 for Black, White and Blue.

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

21 August 20245Press releasewifihifi.com/bowers-wilkins-launch-all-new-true-wireless-earbudsRead 15 October 2026Launch release as reprinted by WiFi HiFi. Engadget published it on 21 August 2024 and Notebookcheck reported it the same day.

7 May 20245Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026Maker news dated 6 May 2024 with the Wedemark dateline of 7 May 2024. The dateline date is stored.

Status

Available1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026The US store lists the Pi8 at 499 USD, above the 399 USD launch price. Every finish showed Out of Stock on 2026-10-15 and the page offers a back-in-stock sign-up. Retailers still list it and the maker has named no successor, so the status stays available.

Available1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026US store shows the product at 99.95 USD against 219.95 USD and lists Black, White and Blue.7Maker product pageus.sennheiser-hearing.com/products/accentum-true-wireless.jsRead 16 October 2026All three SKUs are available on 2026-10-16.

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

Not available

Not available

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

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.

$3995Press releasewifihifi.com/bowers-wilkins-launch-all-new-true-wireless-earbudsRead 15 October 2026Release: available from today at 399 USD, 499 CAD. Tax treatment is not stated. The current US store price of 499 USD is not the launch price.

$199.995Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026MSRP of 199.99 USD and 279.95 CAD. SoundGuys and T3 print 199.95 USD. The maker figure is stored.8Reviewsoundguys.com/sennheiser-accentum-true-wireless-review-116713Read 16 October 2026Review lists 199.95 USD.

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

€199.96Press releasecdn.uc.assets.prezly.com/ff61fc44-afa0-42f0-934b-a6293529e6bd/-/inline/no/Pressemitteilung_Sennheiser%20ACCENTUM%20True%20Wireless.pdfRead 16 October 2026German release of 7 May 2024: 199.90 EUR (209.90 CHF), incl. VAT.

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

Not available

US, CA, DE, GB, AU5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026United States and Canada MSRP in the release.6Press releasecdn.uc.assets.prezly.com/ff61fc44-afa0-42f0-934b-a6293529e6bd/-/inline/no/Pressemitteilung_Sennheiser%20ACCENTUM%20True%20Wireless.pdfRead 16 October 2026Germany.10Reviewt3.com/reviews/sennheiser-accentum-true-wireless-reviewRead 16 October 2026Now on sale for 169.99 GBP in the UK and 299 AUD in Australia.

ColoursiThe maker's own colour names

Anthracite Black, Dove White, Jade Green, Midnight Blue, Dark Burgundy, Pale Mauve1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Six finishes on the US store. The launch release named four of them. Dark Burgundy and Pale Mauve were added later.

Black, White, Blue1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Colour selector: Black, White and Blue.5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026Launch colours black and white. Blue was added later and is on the maker store.7Maker product pageus.sennheiser-hearing.com/products/accentum-true-wireless.jsRead 16 October 2026Black, White and Blue.

Segment

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Design

1 of 4 differ

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

In-ear2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual section 7: Pi8 are designed to seal the ear canal.

In-ear1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: ear coupling ear canal, true wireless stereo earphones with four ear tip sizes.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Wearing style true wireless earphones with ear coupling in the ear canal. The silicone ear tips must seal the ear fully.

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

Stemless2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual Diagram 1 and the maker photos show a compact body without a stalk. TechRadar describes a concha-fit design.

Stemless3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Earbud diagrams show a compact body with no stalk.

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

Not available

Either bud3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026You can also use only the right or only the left earbud.

RGB lighting

Not available

Not available

Drivers and sound

10 of 17 differ

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

ABowers & Wilkins Pi8

Type	Diameter (mm)	Count per earbud
Dynamic	12	1

Source1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification Drive Units: 12mm Carbon Cone. The comparison table says 2 x 12mm Carbon Cone for the pair, so one driver per earbud.

BSennheiser ACCENTUM True Wireless

Type	Diameter (mm)	Count per earbud
Dynamic	7	1

Source1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: TrueResponse dynamic, 7 mm diameter. One driver per earbud.

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

Dynamic4Reviewstuff.tv/review/bowers-wilkins-pi8-reviewRead 15 October 2026Review: a single 12mm dynamic unit with the same sort of carbon cone as the Px8. The maker says Carbon Cone drive unit.

Dynamic1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: speaker principle dynamic.

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

12mm=CalculatedFrom Drivers per bud

7mm=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.

1=CalculatedFrom Drivers per bud

1=CalculatedFrom Drivers per bud

Diaphragm material

Carbon Cone1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Maker name for the diaphragm technology. The page does not give the exact material.

Not available

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

Not available

Min5 HzMax21 kHz1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: speaker frequency range 5 Hz to 21 kHz. Conditions are not stated.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Speaker frequency range 5 Hz to 21 kHz.

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

107dB1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: 107 dB SPL (1 kHz / 1 mW). The manual prints 107 dB at 1 kHz / 0 dBFS.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Speaker sensitivity 107 dB SPL (1 kHz / 1 mW).

Sensitivity reference

Not available

Per 1 mW1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table gives the reference as 1 mW.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Reference 1 mW.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications print the level as 107 dB at 1 kHz / 0 dBFS. The spec sheet says 1 mW, which is stored. The two references are not the same.

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

96kHz4Reviewstuff.tv/review/bowers-wilkins-pi8-reviewRead 15 October 2026Review: aptX Adaptive for 24/96 playback. The launch release says the same. A compatible source is needed and the case retransmits in aptX Adaptive up to 24-bit/96kHz.

Not available

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

24bits2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Specifications: True 24-bit audio connection. The codec is not named there. The launch release gives aptX Adaptive at 24-bit/96kHz. aptX Lossless itself is a 16-bit lossless mode.

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

Yes1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Page: the Smart Control Plus app has a Sound Personalization feature that assesses your listening preferences. The Sound Check presets come from a listening test.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Sound Check in the app guides you step by step to user-defined equalizer presets.8Reviewsoundguys.com/sennheiser-accentum-true-wireless-review-116713Read 16 October 2026Sound Check feature takes a listening test that determines your preferred sound.

Onboard EQ

Not available

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026The sound effects are stored in the earbuds and stay active without the app, for example on another Bluetooth device.

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

51Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification: 5-band customisable EQ plus TrueSound mode.

51Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Page: 5-band EQ in the Smart Control app.5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 20265-band equalizer and Sound Check in the Smart Control app.

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

1 of 2 differ

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

Not available

Not available

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

No9Measurementsoundguys.com/bowers-wilkins-pi8-review-124027Read 15 October 2026Review cons: no spatial audio or head tracking features. TechRadar also says there is no proprietary spatial audio processing.

Not available

Noise cancelling

4 of 11 differ

Active noise cancelling

Yes1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026

Yes1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Hybrid Active Noise Cancellation.

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

Not available

Hybrid1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: Active Noise Cancellation Hybrid ANC.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications: Hybrid ANC technology.5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026Hybrid ANC with Transparency modes.

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

43Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications: 2 microphones per earbud for speech and ANC, so four across the pair. Shared microphones count once.

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

Yes1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Page: noise cancellation that automatically adapts to your surroundings. TechRadar says there is no adaptive ANC option and no way to tweak the ANC level. The maker wins, but the adaptive behaviour is not user-visible.

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026With adaptive noise cancellation the intensity is controlled automatically by the ambient noise. ANC modes in the app: On, Off and Anti Wind.

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

Not available

Not available

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

Not available

Not available

Transparency mode

Yes2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 2.4: ambient Pass-Through mode lets in some external sound.

Yes1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Page: Transparency Mode.

Adjustable transparency

No4Reviewstuff.tv/review/bowers-wilkins-pi8-reviewRead 15 October 2026Review: noise cancelling is a basic toggle with no way to adjust the level of passthrough.

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026The intensity of transparency mode is set in the Smart Control app.5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026In the app the user can select the amount of transparency.9Reviewheadphonecheck.com/test/sennheiser-accentum-true-wirelessRead 16 October 2026A three-stage transparency mode.

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

Not available

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

Not available

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026ANC mode Anti Wind: light reduction to keep disturbing wind or movement noise to a minimum. It is a selectable mode.9Reviewheadphonecheck.com/test/sennheiser-accentum-true-wirelessRead 16 October 2026A special anti-wind ANC mode for outdoor use.

Measured

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

Warm sound signature with emphasised bass. SoundGuys measured the Pi8 on firmware 1.0.16.18 against its own preference curve. Bass runs about 5 dB above the target from 20 to 50 Hz, the response peaks about 9 dB above the target at 3.15 kHz and sits about 14 dB below the target at 20 kHz. These are local peaks, not regional averages.9Measurementsoundguys.com/bowers-wilkins-pi8-review-124027Read 15 October 2026SoundGuys lab response table for the Pi8 on the SoundGuys Headphone Preference Curve, measured on a B&K 5128 fixture per its How We Test method. Values read from the product page lab data. SoundGuys lists the signature as warm and says the Pi8 have more bass emphasis than expected.

Default sound over-emphasizes bass by a couple of dB against the SoundGuys target and under-emphasizes the mids around 500 Hz and 3 kHz by up to 5 dB. There is a boost of a couple of dB around 13 kHz. With ANC on the bass is more emphasized.8Reviewsoundguys.com/sennheiser-accentum-true-wireless-review-116713Read 16 October 2026Lab measurement on SoundGuys' test rig against its headphone preference curve, default settings, firmware 5.7.6, Smart Control app 4.8.1. ANC adds bass emphasis. SoundGuys did not measure battery for this model.

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

Voices are reproduced accurately in SoundGuys recordings. Background noise rejection is not exceptional, so some environmental noise leaks through, but each voice stays intelligible. The recordings cover ideal, office, street, windy and reverberant conditions.9Measurementsoundguys.com/bowers-wilkins-pi8-review-124027Read 15 October 2026SoundGuys microphone demonstrations in ideal, office, street, windy and reverberant conditions. The review text says the microphones work well in a variety of environments but background noise rejection is not exceptional. No numeric result is stored.

Clear in a quiet room. The microphones struggle to attenuate simulated office, street and wind noise.8Reviewsoundguys.com/sennheiser-accentum-true-wireless-review-116713Read 16 October 2026SoundGuys microphone tests with simulated office, street and wind noise.

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.

ABowers & Wilkins Pi8

ANC	Hours (h)
Yes	5.17
No	8.5

Source6Reviewtechradar.com/audio/earbuds-airpods/bowers-and-wilkins-pi8-reviewRead 15 October 2026Review: closer to 8.5 hours from a single charge with ANC off in the reviewer's testing. Codec, volume and source are not stated, so the figure is approximate. The maker claim of 6.5 hours is with ANC on.9Measurementsoundguys.com/bowers-wilkins-pi8-review-124027Read 15 October 20265 h 10 min with ANC on, stored as 31/6 hours. SoundGuys uses music peaking at 75 dB SPL, firmware 1.0.16.18 and app 2.7.1, tested over two weeks on a unit supplied by the maker. Codec is not stated. This is earbud-only runtime and is below the 6.5 hour maker claim. The ANC off row is from TechRadar and is approximate.

BSennheiser ACCENTUM True Wireless

ANC	Codec	Hours (h)
No	AAC	8.5
Yes	AAC	5.5

Source9Reviewheadphonecheck.com/test/sennheiser-accentum-true-wirelessRead 16 October 2026Practical test with the AAC codec at a high playback volume: 8.5 hours with ANC off and 5.5 hours with ANC on. Tom's Guide measured about 6.5 hours ANC off and 5 hours ANC on at up to 70 percent volume with multipoint, and GSMArena and HiFi Oasis got about 5.5 hours ANC on with aptX. The reviewers use different volumes, so only this one test is stored. The review's total with the case is a calculation, so it is not stored.

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

8.5h=CalculatedFrom Battery life (measured)

8.5h=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

55min9Reviewheadphonecheck.com/test/sennheiser-accentum-true-wirelessRead 16 October 2026About 55 minutes to refuel the earbuds when empty. The case took 75 minutes by cable.

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

Not available

Not available

Microphones and calls

4 of 7 differ

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

42Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual section 7: each earbud contains two microphones for picking up your voice during calls. Stored as 4 across the pair. The third microphone per earbud in the specification is for ANC.

41Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: 2 mics per earbud, beamforming for noise reduction. Page: dual mics on each earbud.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications: 2 microphones per earbud for speech and ANC, so four across the pair.

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

61Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification Microphones: 3 per earbud for telephony and ANC. Stored as 6 across the pair.

43Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026The same two microphones per earbud serve speech and ANC, so four physical microphones in total. No feedback microphone is named.

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

Not available

DSP3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Beamforming array for the speech and ANC microphones.

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

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026During a call tap once on either earbud to mute or unmute the microphones.

SidetoneiHear your own voice in calls

No6Reviewtechradar.com/audio/earbuds-airpods/bowers-and-wilkins-pi8-reviewRead 15 October 2026Review: the lack of sidetone-type tech to boost or minimise your own or the caller's voice.

Yes9Reviewheadphonecheck.com/test/sennheiser-accentum-true-wirelessRead 16 October 2026In calls, external noise can be amplified in two intensity levels so you hear your own voice more naturally.

Connectivity

9 of 18 differ

Chip

Qualcomm QCC51817Reviewtomsguide.com/audio/earbuds/bowers-and-wilkins-pi8-review-comfy-fit-incredible-soundRead 15 October 2026Review: QCC5181 chipset alongside a discrete DAC and amp combo. The maker and other reviewers say only a latest-generation Qualcomm chipset. Only Tom's Guide names the part.

Not available

Connections

Bluetooth2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026

Bluetooth1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Bluetooth only. The earbuds have no wired or dongle connection.

Bluetooth

5.41Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification: Bluetooth 5.4 with aptX Lossless technology.

5.31Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: Bluetooth 5.3 compliant, class 1, 10 mW max.

Bluetooth codecs

aptX Lossless, aptX Adaptive, aptX, AAC, SBC1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026

SBC, AAC, aptX, LC31Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: SBC, AAC, aptX, LC3.

Bluetooth profiles

A2DP v1.3.2, AVRCP v1.6.2, HFP v1.8, HSP v1.2, BLE GATT2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Specifications: A2DP v1.3.2, AVRCP v1.6.2, HFP v1.8, HSP v1.2 and BLE GATT.

A2DP, AVRCP, HFP, TMAP, PBP1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: A2DP, AVRCP, HFP, TMAP, PBP.

LE Audio

No2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026No LE Audio profile is listed in the specifications. Stuff says there is no LC3 or Bluetooth LE audio on board.

Yes1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Page: Bluetooth 5.3, Bluetooth LE and Auracast.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Connectivity: Bluetooth Classic and LE Audio supported.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026The earbuds are certified for Bluetooth 5.3 LE Audio and Auracast broadcast audio. The codec row lists LC3.5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026Bluetooth LE Audio capable.

Auracast

Not available

Yes1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Footnote: Auracast is available via firmware update only.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Auracast broadcast audio with a function in the Smart Control app.5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026The earbuds are Bluetooth LE Audio and Auracast capable, with use at Auracast venues in the near future.

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

Yes1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification: Multipoint connectivity. The manual says two devices at once.

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications: number of active connections 2.8Reviewsoundguys.com/sennheiser-accentum-true-wireless-review-116713Read 16 October 2026Bluetooth multipoint lets you pair to multiple devices simultaneously.9Reviewheadphonecheck.com/test/sennheiser-accentum-true-wirelessRead 16 October 2026Multipoint connections with two devices simultaneously.11Reviewtomsguide.com/audio/earbuds/sennheiser-accentum-true-wirelessRead 16 October 2026The review says the earbuds pair to two devices simultaneously with multipoint.

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

22Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 5.3: Pi8 supports multipoint and can be connected to two devices simultaneously. Only one device at a time can play audio or make calls.

23Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications: number of active connections 2. Audio plays from one device at a time.9Reviewheadphonecheck.com/test/sennheiser-accentum-true-wirelessRead 16 October 2026Multipoint connections with two devices simultaneously.

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

63Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026The earbuds store the connection profiles of up to six paired Bluetooth devices.

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Google Fast Pair2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 5.1.2: Android devices running Marshmallow 6.0 or later that support the Google Fast Pair Service pair through a pop-up.

Not available

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

10m8Reviewwhathifi.com/reviews/bowers-and-wilkins-pi8Read 15 October 2026Review: transmission between the earbuds has been reworked, including an increase in range to 10m through a new antenna. This is the maker claim as relayed by the reviewer. The reviewer saw two dropouts in testing.

Not available

Wireless receiveri2.4 GHz dongle

Not available

Not available

Receiver connector

Not available

Not available

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

Not available

Not available

Latency

1 of 3 differ

Low latency mode

Not available

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Low Latency mode in the app reduces the delay between audio and video further. It works with all Bluetooth codecs and can shorten the range.9Reviewheadphonecheck.com/test/sennheiser-accentum-true-wirelessRead 16 October 2026The app can activate low-latency mode for games.

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

Not available

Compatibility

3 of 4 differ

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

iOS, Android, Windows, macOS2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 5.1: iPhone, Android and Mac or PC pairing. The note on Windows 10 describes the Stereo and Hands-Free profiles. Section 8 covers streaming from a Mac over USB.

Not available

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.

Not available

Not available

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

ABowers & Wilkins Pi8

Feature	Needs
Google Fast Pair	Android device running Marshmallow 6.0 or later that supports the Google Fast Pair Service.
Audio retransmission from the charging case	Connect an analogue or USB source to the case with the supplied 3.5 mm or USB-C cable. The case only sends the source audio to the earbuds. Earbud microphone signals are not sent back to the case.

Source2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026

BSennheiser ACCENTUM True Wireless

Feature	Needs
Auracast	Firmware update. Broadcasts are chosen in the Sennheiser Smart Control app.
Eco mode	Only with sources that support aptX. The mode turns aptX off and sends SBC or AAC.
Claimed battery life	Manual test: smartphone at 1 m, Bluetooth AAC codec, volume 50 percent, ANC off. The US spec table says iPhone at a mid volume of 85 dB.

Source1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Footnote on Auracast and the spec table test condition.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Eco mode section and Operating time row of the specifications.

Official licence

Made for iPhone2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Specifications: Apple MFi Made For iPhone support.

Not available

Battery and charging

10 of 13 differ

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

Not available

55mAh1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: left and right earbud 55 mAh.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Battery type: left and right earbud 55 mAh.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications: earbuds 3.7 V, 55 mAh, 0.2 Wh.

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

Not available

Not available

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

ABowers & Wilkins Pi8

Mode	Includes case recharges	Hours (h)
ANC on	No	6.5
ANC on	Yes	20

Source1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification: up to 6.5 hours for earbuds with ANC on, plus 13.5 hours from the charging case. The 20 hour total is stated in the manual and the launch release says all figures are quoted with ANC on. Codec, volume and spatial settings are not stated. The information sheet footnote says pre-production hardware was tested with a smartphone.

BSennheiser ACCENTUM True Wireless

Mode	Codec	Includes case recharges	Hours (h)
ANC off	AAC	No	8
ANC on	Not available	No	6
ANC off	AAC	Yes	28

Source1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: up to 8 hours with ANC off, 6 hours with ANC on and 28 hours overall with the case. Test condition: iPhone, mid volume level 85 dB. The 28 hours match 8 hours plus 20 hours from the case, so they are stored as an ANC-off total.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Battery lifespan: up to 8 hours ANC off, up to 6 hours ANC on, up to 28 hours overall with the case. Test condition: iPhone, mid volume level 85 dB.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications, Operating time: 8 hours with the earbud battery and 28 hours with the case battery. Test conditions: smartphone at 1 m, Bluetooth AAC codec, volume 50 percent, ANC off.

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.

6.5h=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

6h=CalculatedFrom Claimed battery life

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

Not available

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.

20h=CalculatedFrom Claimed battery life

28h=CalculatedFrom Claimed battery life

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

20h=CalculatedFrom Claimed battery life

Not available

Talk time (claimed)

Not available

Not available

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

Not available

Not available

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.

The specification lists charge time as 2 hours and does not name the earbuds or the case. The manual says to allow up to 3 hours to fully charge.2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Specifications: Charge time = 2 hours. Manual section 4: allow up to 3 hours to fully charge.

A full charge of the case and the earbuds together takes about 1.5 hours. Ambient temperatures below 15 C or above 30 C and Qi wireless charging lengthen the time. Charging works between 5 C and 35 C. The case takes 5 V over USB-C. The spec sheet and manual say 500 mA at most and the US page says 1000 mA at most. A battery protection mode charges the earbuds to about 80 percent.1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: charging time about 1.5 hours for a full charge, with the temperature remark. Power supply 5 V, 1000 mA max, USB-C and Qi.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Power supply: 5 V, 500 mA max over USB-C. The US page prints 1000 mA max. Charging temperature 5 to 35 C.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026A full charge cycle of the case and the earbuds takes about 1.5 hours. The battery protection mode charges to about 80 percent. The case input is 5 V, 500 mA max.

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

15min1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification: 15-minute charge = 2 hours playback.

10min1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: after 10 minutes of charging, 1 hour of music playtime.5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026Quick charging over USB gives up to 1 hour of playback in about 10 minutes.

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.

2h1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Same row. ANC, codec and volume conditions are not stated.

1h1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: after 10 minutes of charging, 1 hour of music playtime. Volume and ANC state are not stated.5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026Up to 1 hour of playback in about 10 minutes.

Charging case

2 of 10 differ

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

Not available

400mAh1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: charging case 400-420 mAh. The lower figure is stored. The manual lists 1.48 to 1.56 Wh at 3.7 V.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Battery type: charging case 400-420 mAh.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications: charging case 3.7 V, 400-420 mAh, 1.48-1.56 Wh. The lower figure is stored.

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-C2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 4: USB-C socket on the charging case.

USB-C1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: USB charging via USB-C socket at the charging case.

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

Not available

Wireless charging

Yes1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification Wireless Charging Support: Yes.

Yes1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Page: convenient Qi wireless or USB-C charging.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026The case charges by USB cable or on a Qi-compatible wireless charger.5Press releasenewsroom.sennheiser.com/pocketable-powerhouse-this-is-accentum-true-wirelessRead 16 October 2026Both USB-C and Qi wireless charging are available in the case.

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

Qi4Reviewstuff.tv/review/bowers-wilkins-pi8-reviewRead 15 October 2026Review: the case can be topped up wirelessly on a Qi pad. The maker names no standard.

Qi1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Page: Qi wireless charging.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Qi-compatible wireless charging station.

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.

Yes2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual section 8: the case retransmits audio from a 3.5 mm analogue or USB source to the earbuds.

Not available

Controls

2 of 5 differ

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

Touch2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 2.2: touch-sensitive multi-function button area on the top face of each earbud.

Touch1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Page: touch interface.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Touch control surface on each earbud.

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

Touch6Reviewtechradar.com/audio/earbuds-airpods/bowers-and-wilkins-pi8-reviewRead 15 October 2026Review: on-ear volume control by tap and hold on either earbud, left down and right up. It replaces the noise mode and voice assistant gestures.

Touch3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Touch and hold the left surface to lower the volume and the right surface to raise it.

Gestures

Single tap: play or pause, answer call, Double tap: next track, Triple tap: previous track, Double tap and hold: end call, Touch and hold left earbud for 1 second: switch noise cancelling and pass-through, Touch and hold right earbud for 1 second: voice assistant, Touch and hold either earbud: volume, left down and right up, when set in the app2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual Diagram 2 symbols for the taps and Quick Start Guide: hold the left earbud for noise cancelling and pass-through, the right earbud for voice assistant. The double tap and hold symbol is read as end call from the red phone icon. Volume on tap and hold is from TechRadar.

Right tap once: play or pause, answer a call, Left tap once: transparency mode on or off, Left tap twice: previous track, Right tap twice: next track, Left tap three times: ANC on or off, Right tap three times: voice assistant, Touch and hold left: volume down, Touch and hold right: volume up, Tap twice in a call: end a call or reject an incoming call, Tap once in a call: mute or unmute the microphones3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Operation chapter: tap and hold gestures for volume, transparency, ANC, voice assistant, playback and calls. Controls can be changed in the app.

Remappable controls

Yes2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 2.3: the app can customise the multi-function button behaviour.

Yes1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Page: the customizable touch interface controls playback, calls and voice assistant.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026In the app you can customise control functions, select presets or switch them off. Some basic functions such as phone control cannot be changed.

Voice assistant

Not available

Siri, Google Assistant3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Triple tap on the right earbud starts the voice assistant of your device, for example Siri or Google Assistant.

Sensors and health

1 of 9 differ

In-ear detection

Yes2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 2.5: wear sensors in both earbuds pause audio when an earbud is removed. They can be switched off in the app.

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Smart Pause: music pauses when you take an earbud out and resumes when you put it back. It can be turned off in the app.

Sensors

Not available

Not available

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.

No6Reviewtechradar.com/audio/earbuds-airpods/bowers-and-wilkins-pi8-reviewRead 15 October 2026Review: there are no hearing tests for creating personalised sound profiles.

Yes1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Sound Check and Sound Personalization are listening preference tests. No medical hearing test is claimed.8Reviewsoundguys.com/sennheiser-accentum-true-wireless-review-116713Read 16 October 2026Sound Check listening test. It is not a medical hearing test.

Hearing protectioniLimits sudden loud sounds

Not available

Not available

Health features

Not available

Not available

Fit and durability

1 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.

XS, S, M, L1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Accessories: Extra Small / Small / Medium / Large ear tips. The manual says medium tips are pre-fitted.

XS, S, M, L1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026What's in the box: ear tip sets XS, S, M and L.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Four silicone ear tip sizes XS, S, M and L. Size M is fitted on delivery.

Ear tip materials

Silicone8Reviewwhathifi.com/reviews/bowers-and-wilkins-pi8Read 15 October 2026Review: four different sizes of silicone eartip in the box. TechRadar also says silicone.

Silicone1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026The page names ear tips. The manual says silicone.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Silicone ear tips.

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

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Ear tip fit test

No6Reviewtechradar.com/audio/earbuds-airpods/bowers-and-wilkins-pi8-reviewRead 15 October 2026Review: there are no ear-tip fit tests. What Hi-Fi? says the app has no eartip fit test.

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Fit Test function in the Smart Control app.

Dust and water rating, buds

IP541Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification Water Resistance: IP54 (earbuds).

IP541Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: IP54, splash resistant, earbuds only.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Weather resistance: IP54, earbuds only.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Earbuds splash resistant to IP54. The charging case is not splash proof.

Dust and water rating, case

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Water resistance depth

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Software

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Companion app

Bowers & Wilkins Music1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Page: Bowers & Wilkins Music app for setup and control.

Sennheiser Smart Control1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: Sennheiser Smart Control app. The page also names a Smart Control Plus app.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Sennheiser Smart Control app.

App platforms

iOS, Android2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 6: the app is free on iOS and Android.

Android, iOS1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: Smart Control app for iOS and Android.

User firmware updates

Yes2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual 6.2: software updates through the app.

Yes3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Free firmware updates through the Smart Control app.

Finding network

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Precision findingiUWB in the case

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Live translation

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Dimensions and weight

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

7g(0.2 oz)1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification Weight: Earbuds 7g (each).

5.5g(0.2 oz)1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: 5.5 g single earbud.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Product weight: 5.5 g single earbud.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications: earbud approx. 5.5 g each.

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

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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)1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification Weight: Charging case 46g. Earbuds are not included.

41g(1.4 oz)1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026Spec table: 41 g charging case. The 52 g total equals the case plus two earbuds, so this is the empty case.2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Product weight: 41 g charging case.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Specifications: charging case approx. 41 g. Both earbuds and case approx. 52 g.

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

Width65Height52Depth29mm(2.6 × 2 × 1.1 in)1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Specification Dimensions (Charging Case): 65 mm (w) x 29 mm (d) x 52 mm (h). The axes are labelled in the source.

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Certifications

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

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Communication certifications

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FCC IDs

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2A3ULATW14Regulatory filingcdn.sennheiser-hearing.com/product-documents/product-downloads/accentum-true-wireless/safety_instruction/Compliance_Information_ACCENTUM_True_Wireless.pdfRead 16 October 2026Compliance Information: FCC ID 2A3ULATW1 on the earbud models ATW1 R and ATW1 L. The charging case ATW1 C shows no FCC ID.

Other certifications

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In the box

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In the box

Pi8 earbuds with medium ear tips, Extra small ear tips x2, Small ear tips x2, Large ear tips x2, Charging case, USB-C charging cable, USB-C to 3.5 mm audio cable, Literature pack with Quick Start Guide and Safety and Warranty2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026Manual section 1 carton contents, with the Quick Start Guide and Safety and Warranty literature pack.

Earbud R (ATW1 R) and earbud L (ATW1 L), Charging case (ATW1 C) with built-in battery and wireless charging, USB cable with USB-C and USB-A connector, approx. 0.4 m, Silicone ear tips in sizes XS, S, M (fitted on delivery) and L, Quick guide, Safety guide1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026What's in the box and the manual's delivery list.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Scope of delivery chapter.

Cables included

ABowers & Wilkins Pi8

Type	Length (m)	Count
USB-C to USB-C charging cable	0.6	1
3.5 mm jack to USB-C audio cable	0.8	1

Source1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Accessories: 60 cm USB-C to USB-C charging cable and 80 cm 3.5 mm jack to USB-C audio cable. Lengths are the published nominal figures.

BSennheiser ACCENTUM True Wireless

Type	Length (m)	Count
USB-C to USB-A	0.4	1

Source1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026What's in the box: one USB-C charging cable.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026USB cable with USB-C and USB-A connector, approx. 0.4 m.

Links

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Product page

www.bowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.html1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026

us.sennheiser-hearing.com/products/accentum-true-wireless1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026US maker product page.

Spec sheet

www.bowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw68d0bd69/downloads/ENGLISH-B&W-Pi8-Information-Sheet.pdf3Maker spec sheet (PDF)bowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw68d0bd69/downloads/ENGLISH-B&W-Pi8-Information-Sheet.pdfRead 15 October 2026Two page English Technical Information sheet. It repeats the manual specifications for features, codecs, microphones, drive units, battery, water resistance, accessories, case dimensions and weights. Its battery footnote says testing used pre-production hardware and software paired with a smartphone.

stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdf2Maker spec sheet (PDF)stassen.nl/images/Senn_ACCENTUM%20TW_Spec_Sheet_EN.pdfRead 16 October 2026Sennheiser English spec sheet, as hosted by a distributor.

Manual

www.bowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdf2Owner's manualbowerswilkins.com/on/demandware.static/-/Library-Sites-bowers_northamerica_shared/default/dw1ab1096c/downloads/Pi8-Manual-v5_2025Dec11_GFP.pdfRead 15 October 2026English user manual, pages 2 to 8 of a 130 page multilingual PDF. Version file name Pi8-Manual-v5_2025Dec11_GFP.pdf.

www.bax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdf3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026Dutch manual, version 04/24 A01, hosted by a retailer. It is the maker's manual for ATW1. The English copy was not reachable on the maker's CDN.

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

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Warranty

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

2years1Maker product pagebowerswilkins.com/en-us/product/wireless-earbuds/pi8/300965.htmlRead 15 October 2026Page: 2-year warranty valid from the date of purchase for select products. The US store is the market.

1year1Maker product pageus.sennheiser-hearing.com/products/accentum-true-wirelessRead 16 October 2026US store: 1-year manufacturer warranty. The EU manual says 24 months.3Owner's manualbax-shop.nl/downloads/products/9000-0131-1764/atw1_manual_nl.pdfRead 16 October 2026EU manual: the maker grants a 24-month warranty. The US store says 1 year and is stored.

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