Earbuds / Compare

EarFun Air Pro 4 vs soundcore Liberty 4 Pro

A

Product A: EarFun

Air Pro 4

91 of 166 known

Change EarFun Air Pro 4

Compare the soundcore Liberty 4 Pro with

Search earbuds

B

Product B: soundcore

Liberty 4 Pro

86 of 166 known

Change soundcore Liberty 4 Pro

Compare the EarFun Air Pro 4 with

Search earbuds

All 166 fields

Every value links to where we found it.

Only differences

AEarFun Air Pro 4

Bsoundcore Liberty 4 Pro

General

4 of 8 differ

Series

Not available

Not available

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

TW600, TW600B, TW600GW, TW600E1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page SKUs TW600B Black, TW600GW Glossy White and TW600E Royal Blue. The manual and radio filings name the base model TW600.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Specification and compliance pages: product TW600. The FCC label lists TW600L and TW600R.

A3954, A3954ZF1, A3954Z21, A3954ZG14Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.jsRead 20 October 2026

GTIN / EAN

Not available

194644297237, 194644297206, 1946442074344Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.jsRead 20 October 2026US store barcodes per colour. The EU store uses the same barcodes for its own SKU names.

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

Not available

Not available

Status

Available1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Global store lists the Black, Glossy White and Royal Blue variants with Add to cart.

Available4Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.jsRead 20 October 2026The US store lists all three colours as available on the access date.

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

soundcore Liberty 5 Pro11Press articlephileweb.com/sp/news/d-av/202605/27/65209.htmlRead 23 October 2026PhileWeb's launch report names the Liberty 4 Pro as the previous model of the Liberty 5 Pro series.12Press articleexpertreviews.co.uk/technology/headphones-audio/soundcore-liberty-5-pro-reviewRead 23 October 2026Expert Reviews names the Liberty 4 Pro as a predecessor of the Liberty 5 Pro.

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

$89.994Press articlesoundguys.com/earfun-unveils-air-pro-4-120881Read 15 October 2026MSRP $89.99. Excludes sales tax. The launch coupon price is not stored.

$129.997Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Spec box price $129.99. Digital Trends and Mezha also report $130 and $129 at launch. The maker's US store now lists $149.99.

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.

€79.996Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026German test updated on 5 August 2024: regular price 79.99 EUR (UVP) with a launch promotion of 59.99 EUR. VAT is included as is usual for German retail prices. The promotion price is not stored.

Not available

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

US, DE6Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026German launch price and the US price from SoundGuys.

US, GB, EU, JP4Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.jsRead 20 October 2026Also sold through the UK, EU and Japan stores of the maker.

ColoursiThe maker's own colour names

Black, Glossy White, Royal Blue1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Colour selector: Black, Glossy White and Royal Blue. Royal Blue came after launch. The Japanese launch report and SoundGuys list black and white only.

Glossy Black, Pearl White, Blue4Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.jsRead 20 October 2026US store lists Glossy Black, Pearl White and BIue, with a typo in the last name. Stored as Blue. Anker Japan sells Midnight Black, Pearl White, Sky Blue and Deep Green under other SKUs, and the EU store lists more colours.

Segment

Music1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026The maker lists the product as flagship adaptive ANC earbuds. No maker category matches the enum exactly, so music is the closest option.

Music3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026

Design

1 of 4 differ

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

In-ear1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: in-ear earbuds with ear tips and an ergonomic fit.

In-ear3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026

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

Stem1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Stem bud. The controls and microphones sit in the stem.

Stem3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026Stemmed earbuds with a control area on the stem.

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

Not available

Either bud1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

RGB lighting

Not available

Not available

Drivers and sound

9 of 17 differ

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

AEarFun Air Pro 4

Type	Role	Diameter (mm)	Count per earbud
Dynamic	Full range	10	1

Source1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: 10 mm composite dynamic drivers. SoundGuys lists one driver per bud.

Bsoundcore Liberty 4 Pro

Type	Role	Diameter (mm)	Count per earbud
Dynamic	Woofer	10.5	1
Dynamic	Tweeter	4.6	1

Source1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table lists 10.5mm and 4.6mm dynamic drivers. The US page calls the second a titanium-coated tweeter and Anker Japan names the 10.5 mm driver for bass and the 4.6 mm driver for mid and high range. One of each per earbud.

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

Dynamic1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026

Dynamic1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

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

10mm=CalculatedFrom Drivers per bud

10.5mm=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

2=CalculatedFrom Drivers per bud

Diaphragm material

Composite diaphragm1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: customised 10 mm composite diaphragm drivers. Verbatim material is composite.

Titanium-coated (tweeter)3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026US page names a titanium-coated tweeter next to the 10.5mm driver. Only the tweeter coating is stated.

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

Not available

Min14 HzMax40 kHz1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table prints 14Hz - 40kHz with no codec or conditions.

Impedance

Not available

Not available

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

Not available

Not available

Sensitivity reference

Not available

Not available

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

96kHz1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: aptX Adaptive lossless technology up to 24-bit and 96 kHz. This is the maker's wording. aptX Lossless itself is 44.1 kHz and 16-bit. LDAC reaches 96 kHz and 24-bit on a supported Android phone per the Japanese release.3Press articlephileweb.com/sp/news/d-av/202407/18/60758.htmlRead 15 October 2026LDAC supports up to 96 kHz and 24-bit. aptX Lossless is CD quality 44.1 kHz and 16-bit.

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.

24bits1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Same maker wording as the sample rate: up to 24-bit and 96 kHz with aptX Adaptive or LDAC on supported sources.

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

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: personalise your sound using Sound Personalization in the EarFun Audio app.

Yes7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026

Onboard EQ

Not available

Not available

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

101Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: 10-band built-in EQ in the EarFun Audio app.

87Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Eight-band custom equalizer in the soundcore app. The app also has 22 presets.

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

Bass Boost 3, Bass Reducer 3, Treble Boost 3, Treble Reducer 35Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review: 30 EQ presets plus a 10-band custom equaliser. Three strengths exist for each boost and reduce preset. The four strongest presets named in the review are stored. The other presets are not listed.

Not available

Volume limit

Not available

Not available

Spatial audio

2 of 2 differ

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

Not available

Spatial Audio (Music, Podcast, Movie and Game modes)1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Four Spatial Audio modes: Music, Podcast, Movie and Game. Spatial Audio is not supported when LDAC is on.

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

Not available

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Spatial Audio Music Mode offers head tracking or fixed. Podcast, Movie and Game modes are listed without head tracking.

Noise cancelling

6 of 11 differ

Active noise cancelling

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: QuietSmart 3.0 adaptive noise cancellation up to 50 dB.

Yes3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026Seven sensors and real-time adaptive noise reduction that adapts every 0.3 seconds.

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

Hybrid1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Maker gallery image titled Adaptive Hybrid Active Noise Cancellation. A second gallery image labels a feedforward mic and a feedback mic in each bud.4Press articlesoundguys.com/earfun-unveils-air-pro-4-120881Read 15 October 2026Adaptive hybrid ANC with feedforward and feedback microphones.

Not available

ANC microphones in both earbudsiPhysical microphones used by ANC across the pair. A shared call and ANC microphone counts once. Case microphones and vibration sensors are excluded.

41Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Maker gallery diagram labels a feedforward mic, a feedback mic and a talk mic in each bud. That gives four ANC microphones across the pair. The talk mic is not an ANC microphone.

69Press articlemezha.ua/en/2024/10/07/anker-soundcore-liberty-4-pro-is-presented-tws-headphones-with-anc-and-up-to-40-hours-of-battery-life-for-129/ampRead 20 October 2026Mezha describes seven sensors as six microphones and a barometer. Calls also use the six microphones.10Press articlemacerkopf.de/2025/01/07/anker-soundcore-liberty4-pro-ces2025Read 20 October 2026Six noise cancelling sensors plus a barometric pressure sensor for an airplane mode.

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

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: QuietSmart 3.0 senses changes in ambient noise and how the earbuds are worn and adjusts the cancellation.

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Ambient Sound section: ANC levels 6 to 10 adapt to the ears and environment.

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

31Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: manual choice of three levels, high, normal and low. SoundGuys lists a Strong and a Balance mode on early firmware. The maker figure is used.5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review on firmware 0.2.3 lists Strong ANC, Balance ANC, two adaptive modes and a wind mode. The maker lists three manual levels, which is stored.

51Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026ANC is level 6 to 10, so 5 levels. Transparency is level 1 to 5. Normal sits between them.

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

50dB1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page and gallery image: up to 50 dB. The frequency and test conditions are not stated.

Not available

Transparency mode

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: Ambient Sound modes.

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Adjustable transparency

Not available

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Transparency is level 1 to 5 on the slider and in the app.

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

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Easy Chat lowers music volume and enables transparency while you talk, then returns to the ANC level after 5, 10 or 15 seconds of silence. ANC mode only.

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

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026The maker FAQ and manual list Wind Noise Cancellation as an app setting. This is selectable processing, not a mesh or shape change.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026App feature list names Wind Noise Cancellation.

Yes3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026Six microphones, a noise cancelling algorithm and wind noise reduction technology for calls.

Measured

4 of 23 differ

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

SoundGuys lab response closely follows its Headphone Preference Curve apart from a dip in the highs around 8 to 11 kHz. Bass below 500 Hz is louder with ANC on than with ANC off.5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review: the response closely follows the house curve with a dip in the highs around 8 to 11 kHz. Disabling ANC makes all frequencies below 500 Hz quieter. Firmware 0.2.3, EarFun app 20.1.1. The unit came from EarFun.

SoundGuys found the default sound follows its headphone preference curve closely across the mids and highs, with more emphasis on bass below 200 Hz.7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Objective measurements section. SoundGuys compares the default sound with its headphone preference curve.

Bass amount (measured)iDeviation from the review source target in the bass range. Positive means more bass. Target, test method and settings belong in the source note.

Not available

Not available

Treble amount (measured)iDeviation from the review source target in the treble range. Positive means more treble. Values from different targets may not be directly comparable.

Not available

Not available

Deviation from target (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Consistency between fittings (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Harmonic distortion (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Sound leakage (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Call quality notes (measured)iMeasured by a reviewer, not claimed by the maker

SoundGuys microphone demonstrations pick up the voice accurately in quiet conditions. The microphones are not ideal for calls in noisy environments.5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review: the microphones accurately pick up the voice in quiet environments and are not ideal for noisy ones. Ideal, office, street, windy and reverberant demonstrations were published.

SoundGuys found voices clear in its ideal-conditions demo. In simulated office and street noise some background noise gets through while the voice stays in focus. Simulated wind and reverberant space were handled well. These are qualitative results.7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026SoundGuys microphone demos in ideal, office, street, windy and reverberant conditions. No numerical speech bandwidth or noise score is stored.

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.

AEarFun Air Pro 4

Hours (h)
8.73

Source5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review battery test: 8 hours 44 minutes, stored as 8.73 h. The review does not state ANC, codec or volume for the test, so no ANC or codec value is stored. The page lists 8.73 h. This is not case-inclusive runtime.

Bsoundcore Liberty 4 Pro

ANC	Hours (h)
Yes	5.7

Source7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 20265 h 42 min with ANC enabled, stored as 5.7 h. One-week test of a maker-provided unit on earbud firmware 03.17, case firmware 02.56 and soundcore app 5.5.0. SoundGuys plays real music peaking at 75 dBSPL. Codec and host are not stated.

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

8.73h=CalculatedFrom Battery life (measured)

5.7h=CalculatedFrom Battery life (measured)

Battery life with case (measured)iReviewer-tested total including earbuds and case recharges. Do not calculate this by multiplying one-charge runtime by claimed recharge count.

Not available

Not available

Full charge time (measured)iBuds in the case, 0 to 100 %. Measured by a reviewer

Not available

Not available

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

Not available

Not available

Microphones and calls

0 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.

61Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: 6-mic system with an AI algorithm and cVc 8.0. The gallery diagram shows three microphones in each bud.3Press articlephileweb.com/sp/news/d-av/202407/18/60758.htmlRead 15 October 2026Three microphones per earbud for calls, with cVc 8.0 and AI voice pickup.6Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026Three AI-supported microphones per side with cVc 8.0.

63Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 20266-Mic AI Clear Calls.

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 pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Six across the pair, including the ANC microphones.

65Maker product pageankerjapan.com/products/a3954Read 20 October 2026Six microphones are used for call noise removal and the seven sensors for ANC include a new barometric sensor, so six microphones in total.

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

AI1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: 6-mic AI algorithm with cVc 8.0.

AI3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026

Call audio bandwidthiHighest supported call-audio bandwidth. Compatible phone, operating system, call app or network requirements belong in the source note.

Not available

Not available

Mic mute controliAn earbud control that mutes the microphone during calls. Includes touch or pressure gestures and physical buttons. Phone/app-only controls do not qualify.

Not available

Not available

SidetoneiHear your own voice in calls

Not available

Not available

Connectivity

8 of 18 differ

Chip

Qualcomm QCC30911Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: Qualcomm QCC3091 SoC.3Press articlephileweb.com/sp/news/d-av/202407/18/60758.htmlRead 15 October 2026Qualcomm QCC3091.

Not available

Connections

Bluetooth1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Bluetooth only.

Bluetooth1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Bluetooth

5.41Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: V5.4.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026English specifications: V5.4.

5.31Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Bluetooth codecs

SBC, AAC, aptX Adaptive, aptX Lossless, LDAC, LC31Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: aptX adaptive, LDAC, SBC and LC3. The page text adds aptX Lossless. AAC is not in the maker table and comes from SoundGuys and kopfhoerer.de.5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review: aptX Lossless, LDAC, AAC and SBC with Bluetooth 5.4.6Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026Codecs SBC, AAC, aptX, aptX Adaptive, aptX Lossless, LC3 and LDAC. The aptX family and LDAC are activated on Android.

SBC, AAC, LDAC5Maker product pageankerjapan.com/products/a3954Read 20 October 2026Comparison table lists SBC / AAC / LDAC.

Bluetooth profiles

A2DP, AVRCP, HFP, HSP1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: A2DP, AVRCP, HFP and HSP.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026English specifications: A2DP, AVRCP, HFP and HSP.

Not available

LE Audio

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: LE Audio with the LC3 codec, available via firmware update only.6Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026LE Audio is supported and can be chosen in the app instead of Google Fast Pair.

Not available

Auracast

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: Auracast supported, available via firmware update only. The maker Auracast announcement lists the Air Pro 4.6Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026Auracast is supported and needs a compatible smartphone. Owners on the maker community report that it needs a specific firmware.7Press releasemyearfun.com/press-release/auracast-is-here-unlock-a-new-era-of-shared-audio-with-earfunRead 15 October 2026Maker announcement of 6 November 2025 on Auracast. The product menu on the page lists the Air Pro 4 with Lossless Audio and Auracast. It gives no firmware version.

Not available

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

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: connects to two devices at the same time.

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

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

21Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: two devices.5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review and spec table: multipoint with two devices.

25Maker product pageankerjapan.com/products/a3954Read 20 October 2026Multipoint connects to two devices at the same time.

Multipoint with LDACiMany buds turn multipoint off on LDAC

Not available

No1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026LDAC section says that with two devices connected the app warns that LDAC is not supported. The Anker Japan comparison table says LDAC can be used with multipoint. The manual is kept.

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

Not available

Not available

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Google Fast Pair1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: Google Fast Pair on Android Marshmallow and above or 11.0 and later.

Google Fast Pair1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

15m1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: maximum working range 15 m without obstacles.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Troubleshooting: maximum range 49 ft (15 m) without obstacles.

10m1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Wireless receiveri2.4 GHz dongle

Not available

Not available

Receiver connector

Not available

Not available

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

Not available

Not available

Latency

3 of 3 differ

Low latency mode

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: Ultra Low Latency Mode and Game Mode in the app.

Not available

Claimed latency

AEarFun Air Pro 4

Connection	Mode	Latency (ms)
Bluetooth	Game Mode	50

Source1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Feature list says < 50 ms and the text says 50 ms. Stored as 50 ms. The Bluetooth connection and Game Mode are the conditions. The host phone and codec are not stated.

Bsoundcore Liberty 4 Pro

Not available

Lowest claimed latency

50ms=CalculatedFrom Claimed latency

Not available

Compatibility

3 of 4 differ

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

Android, iOS1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: EarFun Audio app for iOS and Android.

Android, iOS, Windows, macOS7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Reviewer used the earbuds with an iPhone 15 Pro, notes LDAC needs a compatible Android phone and lists computer audio setup in the maker FAQ.

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.

AEarFun Air Pro 4

Platform	Connection
Android	Bluetooth
iOS	Bluetooth

Source1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Bluetooth is the only connection. Microphone support per platform is not stated.

Bsoundcore Liberty 4 Pro

Not available

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

AEarFun Air Pro 4

Feature	Needs
LDAC	Android phone that supports LDAC. Turn it on in the EarFun Audio app under Bluetooth Audio Quality. The earbuds restart to apply it. iOS devices do not support LDAC.
Google Fast Pair	Android phones running Marshmallow and above or Android 11 and later per the maker page.
LE Audio and Auracast	The maker page says they are available via firmware update only. kopfhoerer.de says LE Audio is chosen in the app instead of Google Fast Pair and Auracast needs a compatible phone.
Game Mode	Turn it on in the EarFun Audio app. The latency claim is for Game Mode.
In-ear detection	Can be switched on or off in the EarFun Audio app. Auto-answer on insertion does not apply to VoIP calls.

Source1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 20262Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026LDAC section: Android only, switch it in Bluetooth Audio Quality in the app, and the earbuds reboot. In-ear detection excludes VoIP calls. Game Mode must be enabled in the app.6Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026LE Audio is selected in the app instead of Google Fast Pair.

Bsoundcore Liberty 4 Pro

Feature	Needs
LDAC	Android 8.0 or later, enabled as Preferred audio quality in the soundcore app. Not available while connected to two devices. Spatial Audio is off while LDAC is on. LDAC raises power use and shortens playtime.
Google Fast Pair	Android 6.0 or later.
Head tracking	Spatial Audio Music mode set to head tracking in the soundcore app. Fixed mode has no head tracking.
Easy Chat	Enable in the soundcore app. Available only in ANC mode.
Touch bar menu	The case menu shows only Ambient Sound by default. Add Spatial Audio, Atmospheric, Find Device and Remote Camera in the soundcore app.

Source1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Official licence

Not available

Not available

Battery and charging

11 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.

54mAh1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: 54 mAh x 2 for the earbuds. Typical or rated basis is not stated.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Specifications: 54 mAh x 2 and 600 mAh.

56mAh1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table lists Earbuds 56mAh x 2 and Charging Case 580mAh. Stored per earbud. Typical or rated is not stated.

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.

AEarFun Air Pro 4

Mode	Codec	Includes case recharges	Hours (h)
ANC off	Not available	No	11
ANC off	Not available	Yes	52
ANC on	Not available	No	7.5
ANC on	Not available	Yes	35
ANC off	LDAC	No	8.5
ANC off	LDAC	Yes	40
ANC on	LDAC	No	6
ANC on	LDAC	Yes	28

Source1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: ANC off up to 11 h and 52 h in total with the case. ANC on up to 7.5 h and 35 h in total. FAQ adds LDAC rows: ANC off 8.5 h and 40 h, ANC on 6 h and 28 h. Figures vary with volume and content. A gallery footnote says the data is laboratory data with ANC off at 50 percent volume. The codec for the non-LDAC rows is not named.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Specifications: ANC off up to 11 h and 52 h in total, ANC on up to 7.5 h and 35 h in total, varying with volume and content.

Bsoundcore Liberty 4 Pro

Mode	Includes case recharges	Hours (h)
ANC off	No	10
ANC off	Yes	40
ANC on	No	7.5
ANC on	Yes	30
Transparency	No	7.5
Transparency	Yes	30
Call	No	4.5

Source1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table: ANC off up to 10 h and 40 h with case, ANC on up to 7.5 h and 30 h. Anker FAQ test was at default settings, normal mode and 50 percent volume. LDAC increases power use and reduces playtime.2Maker product pageservice.soundcore.com/article-description/Different-Playtimes-of-soundcore-Liberty-4-Pro-from-a-Single-Charge-With-the-Charging-CaseRead 20 October 2026Maker FAQ: ANC 7.5 h and 30 h with case, normal 10 h and 40 h, transparency 7.5 h and 30 h. Calls 4 h with ANC, 4.5 h in normal mode and 4 h with transparency. The call row stores the normal-mode 4.5 h. Tested in the Anker laboratory at default settings, normal mode and 50 percent volume.

Longest claimed use per chargeiHighest earbuds-only runtime among all stored modes. This can be ANC off, Hearing Aid, heart-rate or call use. Read the battery table and source conditions.

11h=CalculatedFrom Claimed battery life

10h=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.

7.5h=CalculatedFrom Claimed battery life

7.5h=CalculatedFrom Claimed battery life

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

11h=CalculatedFrom Claimed battery life

10h=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.

52h=CalculatedFrom Claimed battery life

40h=CalculatedFrom Claimed battery life

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

35h=CalculatedFrom Claimed battery life

30h=CalculatedFrom Claimed battery life

Talk time (claimed)

Not available

4.5h=CalculatedFrom Claimed battery life

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

60min1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: charging time 1 hour for the earbuds.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Specifications: 1 hour for the earbuds.

40min1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table says charging time for earbuds up to 40 minutes. SoundGuys lists 45 minutes.

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 case takes 3.5 hours to charge on a wireless charger. The case input is DC 5 V 1 A.1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: 3.5 hours for the case on a wireless charger and input DC 5 V 1 A.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Specifications: 3.5 hours for the case on a wireless charger.

The manual gives up to 40 minutes for the earbuds. An empty case takes 2.5 hours by cable and 3.5 hours wirelessly. Case input is 5 V 1 A. The case stops charging the earbuds when its battery drops below 20 percent. Dry the earbuds and the USB-C port before charging.1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

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

10min1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Feature list: 10 minutes of charging gives 2 hours of playtime.

5min1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Earbud playback after quick chargeiEarbuds-only runtime after quick_charge_min of charging. A claimed case-inclusive total does not qualify. ANC, codec and volume conditions belong in the source note.

2h1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Feature list: 10 minutes of charging gives 2 hours of playtime. Earbuds only. ANC and codec are not stated.

4h1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Charging section says a 5-minute charge of the earbuds gives 4 hours of playtime. ANC, volume and codec are not stated.

Charging case

5 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.

600mAh1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: 600 mAh for the charging case. Typical or rated basis is not stated.

580mAh1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table lists Charging Case 580mAh. Typical or rated is not stated.

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-C1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table lists charging the case via USB-C.

USB-C1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Case full charge timeiBy cable, 0 to 100 %. A time the maker gives with the earbuds inside the case counts, and the source note says so.

120min1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Specs table: 2 hours for the case via USB-C.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Specifications: 2 hours for the case via USB-C and 3.5 hours via a wireless charger.

150min1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Charging section says recharging the case with the earbuds removed takes 2.5 hours by cable and 3.5 hours by wireless charging.

Wireless charging

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: wireless charging compatible.

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Charging section says to place the case at the centre of a wireless charger. No standard is named.

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

Qi5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review: the case charges wirelessly on a Qi charging mat.

Not available

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

Not available

Not available

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

Not available

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Reset section says a notification sound plays from the charging case. SoundGuys says the app can play a tone from either the earbuds or the case.7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026The Find Device section of the app plays a loud tone from either the earbuds or the charging case.

Screen on case

No1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026The manual shows white LED indicators on the case. No screen exists.

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Smart Display on the charging case with a touch bar.

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

Not available

Not available

Controls

4 of 5 differ

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

Touch2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Touch controls section: taps on the earbuds.

Pressure, Swipe1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

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

Touch2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Touch controls: one tap on the left earbud lowers volume and one tap on the right raises it.

Swipe1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Gestures

Double tap: play or pause, Triple tap left: previous track, Triple tap right: next track, Single tap left: volume down, Single tap right: volume up, Hold 2 seconds left: noise cancelling, ambient sound or normal, Hold 2 seconds right: voice assistant, Call, double tap: answer or end, Call, triple tap: answer and switch between two calls, Call, hold 2 seconds: reject2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Touch controls table. SoundGuys notes the single-tap volume gestures can be turned off in the app.5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review control table matches the manual. A single tap changes volume by default and can be turned off.

Squeeze once on either earbud: play or pause, or answer a call, Squeeze twice on the right earbud: next track, Squeeze twice on the left earbud: previous track, Tap and hold either earbud for 2 seconds: switch between ANC and transparency, or reject or end a call, Slide up on either earbud: volume up, Slide down on either earbud: volume down, Pinch both earbud stems for 3 seconds: pair a second device1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Controls table for dual earbuds. Squeeze controls can be customised in the app. Using a single earbud, squeeze twice plays the next track and there is no previous-track gesture.

Remappable controls

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026The manual lists customisable touch controls in the EarFun Audio app.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026App section: customizable touch controls.5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review: tap controls can be fully customised in the app.

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Voice assistant

Voice assistant of the connected phone2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Touch controls: hold the right earbud for 2 seconds to activate the voice assistant. The assistant is the phone's.

Not available

Sensors and health

1 of 9 differ

In-ear detection

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: in-ear detection pauses when you take the earbuds out and resumes when you put them back. It detects one or both earbuds.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026In-Ear Detection section: remove to pause and put back to resume or answer a call, not for VoIP calls. It can be switched off in the app.

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Sensors

Not available

Barometric pressure sensor5Maker product pageankerjapan.com/products/a3954Read 20 October 2026Seven sensors for ANC, with a new barometric pressure sensor that works when Airplane Mode is turned on in the soundcore app.9Press articlemezha.ua/en/2024/10/07/anker-soundcore-liberty-4-pro-is-presented-tws-headphones-with-anc-and-up-to-40-hours-of-battery-life-for-129/ampRead 20 October 2026Seven sensors including one barometer.10Press articlemacerkopf.de/2025/01/07/anker-soundcore-liberty4-pro-ces2025Read 20 October 2026Barometric pressure sensor for the airplane mode. The same article gives a 149.99 euro price at its January 2025 launch while other reports say 129.99, so no euro price is stored.

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.

Yes5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review: My Sound Profile in the app runs a hearing test that builds an EQ preset. This is a sound personalisation test, not a medical test.

Yes7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026HearID Sound Test creates an EQ preset for hearing differences. It is consumer sound personalization, not a medical test.

Hearing protectioniLimits sudden loud sounds

Not available

Not available

Health features

Not available

Not available

Fit and durability

4 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, L, XL2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026How to fit section shows ear tip sizes XS, S, M, L and XL.5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review: five sizes of silicone ear tips are included.6Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026Five sizes XS, S, M, L and XL.

XXS, XS, S, M, L, XL1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Ear tip materials

Silicone5Reviewsoundguys.com/earfun-air-pro-4-review-122469Read 15 October 2026Review: silicone ear tips.

Not available

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

Not available

Not available

Ear tip fit test

Not available

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Dust and water rating, buds

IPX51Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: IPX5 sweat and water resistant.

IP551Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table lists IP55 for the earbuds. SoundGuys and press list IPX5. Anker Japan says the case is not rated.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

1 of 6 differ

Companion app

EarFun Audio1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: EarFun Audio app.

soundcore1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

App platforms

Android, iOS1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page links the EarFun App for iOS and for Android.

Android, iOS1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

User firmware updates

Yes1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Manual and page: firmware update in the EarFun Audio app.2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026App section: firmware update.

Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

Finding network

Not available

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Not available

Dimensions and weight

3 of 4 differ

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

5.2g(0.2 oz)3Press articlephileweb.com/sp/news/d-av/202407/18/60758.htmlRead 15 October 2026Japanese launch report from the maker's technical data: about 5.2 g per earbud and about 56 g for the case with the earbuds. SoundGuys gives 5 g and kopfhoerer.de gives 5.5 g. The 56 g on the maker page is the case with the earbuds, so no case weight is stored.

5.5g(0.2 oz)7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Spec box lists earbud 5.5 g and case 51 g. It does not say whether weighed by SoundGuys. Amazon US lists 62 g in total, which matches 2 x 5.5 g plus 51 g.

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

Not available

Not available

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

Not available

51g(1.8 oz)8Retailer pageamazon.com/dp/B0DBHPZLCCRead 20 October 2026Amazon US detail table lists carrying case weight 51 g. SoundGuys also lists case 51 g in its review spec box and 52 g with case on its product page.

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

Not available

Width62Height29.6Depth65mm(2.4 × 1.2 × 2.6 in)8Retailer pageamazon.com/dp/B0DBHPZLCCRead 20 October 2026Amazon US detail table labels carrying case length 6.5 cm, width 6.2 cm and height 29.6 mm. Length is stored as depth. SoundGuys lists 65 x 62 x 30 mm with no axis names.

Certifications

1 of 3 differ

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

Hi-Res Audio Wireless1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: Hi-Res Audio and Snapdragon Sound certifications with LDAC. A maker gallery image shows the Hi-Res Audio Wireless logo with LDAC and aptX Lossless.

Hi-Res Audio Wireless9Press articlemezha.ua/en/2024/10/07/anker-soundcore-liberty-4-pro-is-presented-tws-headphones-with-anc-and-up-to-40-hours-of-battery-life-for-129/ampRead 20 October 2026Mezha says the earbuds are Hi-Res Audio Wireless certified.10Press articlemacerkopf.de/2025/01/07/anker-soundcore-liberty4-pro-ces2025Read 20 October 2026Names the Hi-Res Audio Wireless standard.

Communication certifications

Not available

Not available

FCC IDs

2AVIT-TW600L, 2AVIT-TW600R2Owner's manualdrive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/viewRead 15 October 2026Back cover label: FCC ID 2AVIT-TW600L for the left earbud and 2AVIT-TW600R for the right.

2AOKB-A3954, 2AOKB-A3954L, 2AOKB-A3954R6Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3954QSG.pdfRead 20 October 2026Quick Start Guide prints FCC ID 2AOKB-A3954 for the model A3954 and 2AOKB-A3954L and 2AOKB-A3954R for the left and right earbuds.

Other certifications

Snapdragon Sound1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Page: Snapdragon Sound certification.

Not available

In the box

2 of 2 differ

In the box

Earbuds, Charging case, Ear tips in five sizes, USB-C to USB-A charging cable, Cleaning stick6Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026Technical data: ear tips, USB-C to USB-A cable, cleaning stick and charging case.

Earbuds, Charging case, Ear tips in six sizes (XXS, XS, S, M, L, XL), size M pre-installed, USB-C charging cable8Retailer pageamazon.com/dp/B0DBHPZLCCRead 20 October 2026Amazon US built-in media list: cable, charging case, XXS/XS/S/M/L/XL ear tips with size M pre-installed, and the earbuds.

Cables included

AEarFun Air Pro 4

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

Source6Reviewkopfhoerer.de/test/earfun-air-pro-4Read 15 October 2026Technical data: one USB-C to USB-A cable. Length is not stated.

Bsoundcore Liberty 4 Pro

Not available

Links

Not compared

Product page

www.myearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-black1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026

us.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026

Spec sheet

www.myearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-black1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026

Not available

Manual

drive.google.com/file/d/1lB2QD83w071hBAMxW53WrJCoyxdrsUEx/view1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Public Google Drive link behind the Download button for the user manual. The same file is the manual used for this entry.

salesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdf1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026English user guide A3954, published in the service index on 2025-09-01.

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

0 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.

1.5years1Maker product pagemyearfun.com/headphones/earfun-air-pro-4-adaptive-anc-true-wireless-earbuds-blackRead 15 October 2026Global store banner and buy box: 18-month warranty. Global store market.

1.5years8Retailer pageamazon.com/dp/B0DBHPZLCCRead 20 October 2026Amazon US listing says 18 months warranty.

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