Earbuds / Compare

soundcore Liberty 4 Pro vs soundcore Liberty Buds 2

A

Product A: soundcore

Liberty 4 Pro

86 of 166 known

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B

Product B: soundcore

Liberty Buds 2

86 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

Asoundcore Liberty 4 Pro

Bsoundcore Liberty Buds 2

General

4 of 8 differ

Series

Not available

Liberty1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Maker line name Liberty. The product is named Anker soundcore Liberty Buds 2 and shows as Anker Liberty Buds 2 over Bluetooth.

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

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

D1206, D1206ZQ1, D1206Z21, D1206Z11, D1206GQ1, D1206G21, D1206G112Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026D1206 is the model in the manual. US store SKUs are D1206ZQ1 Mother of Pearl Version, D1206Z21 Silver White and D1206Z11 Glossy Black. The UK and EU stores list D1206GQ1, D1206G21 and D1206G11 for the same barcodes.

GTIN / EAN

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.

194644348724, 194644366193, 1946443655612Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026Barcodes of the three US variants. Each is a valid UPC-A number and the UK and EU stores list the same barcodes.

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

Not available

3 September 202614Press articletechradar.com/audio/earbuds-airpods/my-favorite-earbuds-of-the-year-just-got-an-open-ear-makeover-as-this-top-cheap-headphone-brand-debuts-7-new-modelsRead 20 October 2026Article of 3 September 2026 reports the Liberty Buds 2 among the products unveiled at IFA 2026.

Status

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.

Available2Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026US store product feed 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.

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

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.

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.

$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.

$129.991Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026US store price is $129.99. TechRadar reports $129.99 at launch.14Press articletechradar.com/audio/earbuds-airpods/my-favorite-earbuds-of-the-year-just-got-an-open-ear-makeover-as-this-top-cheap-headphone-brand-debuts-7-new-modelsRead 20 October 2026Sells for $129.99 and 129.99 GBP.

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

Not available

Not available

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

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.

US, GB, EU2Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026US, UK and EU soundcore stores all sell Liberty Buds 2.

ColoursiThe maker's own colour names

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.

Mother of Pearl Version, Silver White, Glossy Black1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026US store colour names, verbatim.

Segment

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

Music1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Listed in the soundcore Liberty true wireless line. The page title says earbuds for calls, but the line is the music line, so music is stored.

Design

2 of 4 differ

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

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

In-ear1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026In-ear earbuds with ear tips that seal the ear canal.

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

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

Stemless1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Maker image and TechRadar describe lightweight earbuds without long stems.14Press articletechradar.com/audio/earbuds-airpods/my-favorite-earbuds-of-the-year-just-got-an-open-ear-makeover-as-this-top-cheap-headphone-brand-debuts-7-new-modelsRead 20 October 2026Lightweight, without long stems.

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

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

Not available

RGB lighting

Not available

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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.

Asoundcore 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.

Bsoundcore Liberty Buds 2

Diameter (mm)	Count per earbud
9.2	1

Source3Maker product pageuk.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls.jsRead 20 October 2026UK page text: a single 9.2 mm PU + LCP composite diaphragm driver. The manual lists a 9.2 mm driver unit. The driver type is not stated.4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: Driver Unit 9.2 mm. One driver per bud is taken from the single diaphragm in the product text.

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

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

Not available

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

10.5mm=CalculatedFrom Drivers per bud

9.2mm=CalculatedFrom Drivers per bud

Drivers per budiTotal audio transducers in one earbud, summed from explicit driver quantities. A row with an unknown quantity makes the total unknown.

2=CalculatedFrom Drivers per bud

1=CalculatedFrom Drivers per bud

Diaphragm material

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.

PU + LCP composite1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026US and EU page text: a single PU + LCP composite diaphragm. The US page meta description and TechRadar say wool-paper drivers, which does not match the page text.

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

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.

Min20 HzMax20 kHz4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 20Hz - 20kHz. No measurement conditions given.

Impedance

Not available

16Ω4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 16 ohm.

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

Not available

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Sensitivity reference

Not available

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

Not available

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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.

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Adaptive EQiAn inner mic tunes the sound to your ear in real time

Not available

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Personalised soundiA profile from a hearing test or ear scan

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

Yes1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026HearID 5.0 analyzes the hearing profile.

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.

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.

Not available

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

Not available

Anker Signature, Clear Vocals, Powerful Bass, Calm and Soothing, Anker Balanced4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Sound effects section lists five presets. Custom EQ can also be created. The number of custom bands is not stated.12Maker product pageservice.soundcore.com/article-description/How-to-Improve-Sound-Quality-on-Anker-Liberty-Buds-2Read 20 October 2026Curated Sound Effects are found under HearID in the app. A custom EQ curve can be built from the same menu.

Volume limit

Not available

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Spatial audio

2 of 2 differ

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

Spatial Audio (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.

Dolby Audio4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Dolby Audio, Music Mode, a fixed spatial audio effect. The battery FAQ calls it Dolby Atmos.

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

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.

No4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The manual describes a fixed spatial audio effect, so there is no head tracking.

Noise cancelling

3 of 11 differ

Active noise cancelling

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.

Yes1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Product text: 6-sensor full-band ANC system with Anker Thus AI chip. The listing images also show Adaptive ANC 4.0.

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

Not available

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.

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.

Not available

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

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.

Yes1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Listing images show Adaptive ANC 4.0 and the manual describes ear-canal adaptive ANC that adjusts to the ear shape.7Maker product pageservice.soundcore.com/article-description/How-to-Choose-the-Right-Ambient-Sound-Mode-on-Anker-Liberty-Buds-2Read 20 October 2026Adaptive Mode adjusts to the environment, towards Transparency in quiet places and towards stronger ANC in loud ones.

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

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.

54Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Ambient sound section: Noise Cancellation Level 1 to 5. The FAQ groups them as Natural levels 1 to 4 and Deep level 5.7Maker product pageservice.soundcore.com/article-description/How-to-Choose-the-Right-Ambient-Sound-Mode-on-Anker-Liberty-Buds-2Read 20 October 2026Noise Cancellation has five levels, Natural 1 to 4 and Deep 5.

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

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

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Ambient sound section lists Transparency.7Maker product pageservice.soundcore.com/article-description/How-to-Choose-the-Right-Ambient-Sound-Mode-on-Anker-Liberty-Buds-2Read 20 October 2026

Adjustable transparency

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.

Not available

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

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.

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.

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.

Yes15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026The app has a Wind Noise Reduction switch. The default ANC can let in a bit of wind noise. This is a selectable processing feature.

Measured

4 of 23 differ

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

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.

Not available

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

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

Not available

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

Not available

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

Not available

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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

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

Not available

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

Not available

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

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.

Scarbir reports clear, natural calls in noise, including wind. Sudden sounds such as laughter or a toilet flush are inaudible to the caller. Vehicle acceleration and door slams can add a brief metallic edge. The line can turn metallic with small hiccups when the earbuds are connected to two devices and one goes out of range. Bought by the reviewer. Firmware is not stated.15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Review text on call quality in noise and wind. No numbers are stored.

Mic low-frequency extension (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Mic high-frequency extension (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Mic speech-to-noise ratio (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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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.

Asoundcore 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.

Bsoundcore Liberty Buds 2

ANC	Hours (h)
Yes	7

Source15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Review of 9 October 2026 says battery life on a single charge comes in at 7 hours with music and ANC on. The reviewer bought the earbuds. Volume, codec and firmware are not stated. Without music and with ANC on the reviewer got a bit over 8 hours.

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

5.7h=CalculatedFrom Battery life (measured)

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

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

Not available

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Microphones and calls

2 of 7 differ

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

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

61Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Product text: 8 sensors, 3 mics + 1 bone-conduction sensor per bud. That is 6 microphones across the pair. The 6-sensor ANC system and the call microphones are the same physical microphones as far as the text says.

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.

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.

61Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 20263 microphones per bud, 6 in total. The bone-conduction sensors are not microphones and are excluded.

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

Yes1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 20261 bone-conduction sensor per bud.

Mic noise reduction

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

AI1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Thus AI isolates the speech from the background on calls.

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

No15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Review says there is no mute button like on the Liberty 5.

SidetoneiHear your own voice in calls

Not available

Not available

Connectivity

3 of 18 differ

Chip

Not available

ANKER Thus AI1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026Powered by Anker Thus AI Chip. The page says World's First refers to NOR Flash CIM chips and 150 times computing power is against the previous flagship earbud chip.

Connections

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

Bluetooth4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Compliance section: open ports are Classic Bluetooth and BLE. There is no 2.4 GHz or wired mode.

Bluetooth

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

6.14Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: Bluetooth Version 6.1.

Bluetooth codecs

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

SBC, AAC, LDAC5Maker product pageservice.soundcore.com/product-description/a08e200000d1QBkAAMRead 20 October 2026Supported Bluetooth Codec: AAC, SBC, LDAC. The manual says LDAC runs at 660 kbps in its battery test. Scarbir also lists AAC and LDAC.

Bluetooth profiles

Not available

Not available

LE Audio

Not available

Not available

Auracast

Not available

Not available

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

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

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Dual Connections is enabled by default. Two Bluetooth devices at the same time.

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

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

24Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Two Bluetooth devices at the same time.

Multipoint with LDACiMany buds turn multipoint off on LDAC

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.

Not available

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

Google Fast Pair4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Google Fast Pair on Android 6.0 or later.

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

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

10m4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 10m (32ft).

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

Yes10Maker product pageservice.soundcore.com/article-description/How-to-Get-a-More-Stable-Connection-and-Lower-Latency-on-Anker-Liberty-Buds-2Read 20 October 2026Game Mode in the app is built to minimize delay. No latency figure is published.

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

Not available

Compatibility

2 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, 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.

Android, iOS, Windows, macOS11Maker product pageservice.soundcore.com/article-description/How-to-Use-Anker-Liberty-Buds-2-for-Music-and-Calls-on-Windows-and-MacRead 20 October 2026The maker documents Windows and Mac use for music and calls. Android needs 6.0 or later for Fast Pair and the app. The app needs iOS 13 or later.

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.

Asoundcore Liberty 4 Pro

Not available

Bsoundcore Liberty Buds 2

Platform	Connection	Microphone works
Android	Bluetooth	Not available
iOS	Bluetooth	Not available
Windows	Bluetooth	Yes
macOS	Bluetooth	Yes

Source11Maker product pageservice.soundcore.com/article-description/How-to-Use-Anker-Liberty-Buds-2-for-Music-and-Calls-on-Windows-and-MacRead 20 October 2026Windows lists Stereo for music and Hands-Free for calls with the microphone. Mac uses one device for input and output. Phone microphone use is not stated per platform.

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

Asoundcore 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

Bsoundcore Liberty Buds 2

Feature	Needs
LDAC	Enable Preferred Audio Quality in the soundcore app on a device with Android 8.0 or later. LDAC is not available on iPhone. LDAC cannot run together with Dolby Audio or Game Mode. Samsung phones also need the LDAC toggle in phone settings.
Dolby Audio	Turn on in the soundcore app. It cannot run together with EQ, LDAC or Game Mode. The effect is a fixed spatial audio effect.
Game Mode	Turn on in the soundcore app. It cannot run together with EQ, LDAC or Dolby Audio.
HearID	Sign in to a soundcore account in the app, then take the HearID sound test. Results are saved and applied automatically.
AI translation	Needs the soundcore app and a connected phone. Turn off Dual Connections first.
Change ANC mode during a call	Update the earbuds to the latest firmware.
Voice assistant	Not assigned by default. Assign the phone's voice assistant to a double press, triple press or long press in the app. A single tap cannot be assigned.
Fast charging	The earbuds must be fully depleted before a 10 minute charge gives up to 4 hours of playback.

Source4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026LDAC and Dolby notes from the manual. Calls and ANC mode change need current firmware. Real-time translation needs Dual Connections off.12Maker product pageservice.soundcore.com/article-description/How-to-Improve-Sound-Quality-on-Anker-Liberty-Buds-2Read 20 October 2026Dolby Audio, EQ, LDAC and Game Mode cannot run together. LDAC is not available on iPhone.

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.

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.

60mAh4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 60mAh x 2 (Earbuds). Stored as one earbud. Typical versus 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.

Asoundcore 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.

Bsoundcore Liberty Buds 2

Mode	Codec	Spatial audio	Includes case recharges	Hours (h)
ANC off	Not available	Not available	No	12
ANC off	Not available	Not available	Yes	46
ANC on	Not available	Not available	No	7
ANC on	Not available	Not available	Yes	27
Transparency	Not available	Not available	No	7
Transparency	Not available	Not available	Yes	27
ANC on	LDAC	Not available	No	4.5
ANC on	LDAC	Not available	Yes	17.5
ANC on	Not available	Yes	No	4
ANC on	Not available	Yes	Yes	15.5
Call	Not available	Not available	No	4
Call	Not available	Not available	Yes	15.5

Source4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Manual lists Normal mode 12 / 46 hours, ANC On / Transparency 7 / 27, ANC + LDAC (660 kbps) 4.5 / 17.5 and ANC + Calling 4 / 15.5. The first number is the earbuds and the second is with the charging case. The FAQ states testing at room temperature, factory settings and 50% volume in music mode, and adds Dolby Atmos with ANC on at 4 / 15.5 hours. The call rows are with ANC on. Adaptive mode is 7 / 27 hours in the FAQ and is not stored.6Maker product pageservice.soundcore.com/article-description/How-Long-the-Battery-Lasts-on-Anker-Liberty-Buds-2-in-Each-ModeRead 20 October 2026Playtime by mode, earbuds only and with the charging case. Testing at room temperature with factory settings, 50% volume and music mode.

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.

10h=CalculatedFrom Claimed battery life

12h=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

7h=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.

10h=CalculatedFrom Claimed battery life

12h=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.

40h=CalculatedFrom Claimed battery life

46h=CalculatedFrom Claimed battery life

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

30h=CalculatedFrom Claimed battery life

27h=CalculatedFrom Claimed battery life

Talk time (claimed)

4.5h=CalculatedFrom Claimed battery life

4h=CalculatedFrom Claimed battery life

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

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.

60min4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: Full Charging Time for Earbuds 1 Hour. The FAQ says under 1 hour.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Earbuds: less than 1 hour for a full charge.

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 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

The manual and the FAQ give under 1 hour for the earbuds, 3 hours for the case by cable and 4 hours for the case by wireless charging. The FAQ says the case figures are with the earbuds inside and the manual says the 3 hour cable figure is with the earbuds removed. Input is 5 V 1 A and the maker recommends a 5 V 1 A charger. Wireless charging does not work with watch chargers.4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: input 5 V 1 A, wireless charging time for the earbuds 4 hours.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Charging works between 0 and 45 C. The FAQ recommends a 5 V 1 A charger.

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

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

10min6Maker product pageservice.soundcore.com/article-description/How-Long-the-Battery-Lasts-on-Anker-Liberty-Buds-2-in-Each-ModeRead 20 October 202610 minutes of charging gives up to 4 hours of playback in Normal Mode, from fully depleted earbuds.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Fast charging: 10 minutes gives up to 4 hours of playback in Normal Mode.

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.

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.

4h6Maker product pageservice.soundcore.com/article-description/How-Long-the-Battery-Lasts-on-Anker-Liberty-Buds-2-in-Each-ModeRead 20 October 2026Earbuds-only playback in Normal Mode. The earbuds must be fully depleted first. Codec and volume are not stated.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026The earbuds must be fully depleted before fast charging is used.

Charging case

4 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.

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.

580mAh4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: 580mAh (Charging Case). Typical versus 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-C1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026

USB-C4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026USB-C Charging Port.

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.

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.

180min4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: Full Charging Time for Charging Case (Wired Charging) 3 Hours. The charging section says recharging the case with the earbuds removed takes 3 hours via cable. The FAQ says under 3 hours with the earbuds inside. Stored as 180 minutes.8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Charging case wired: less than 3 hours with the earbuds inside.

Wireless charging

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.

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The charging section says to place the case on a wireless charger for wireless charging.

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

Not available

Qi8Maker product pageservice.soundcore.com/article-description/What-Should-I-Do-If-My-Anker-Liberty-Buds-2-Has-Charging-IssuesRead 20 October 2026Charging case wireless: standard Qi. Watch chargers are not supported.

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.

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.

Not available

Screen on case

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.

Not available

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

Not available

Not available

Controls

4 of 5 differ

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

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

Touch4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Touch Control Area on each earbud.

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

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

Not available

Gestures

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.

Double tap right earbud: play or pause (single earbud: double tap), Double tap left earbud: next track, Double tap either earbud: answer or end a call, Hold either earbud for 2 seconds: reject an incoming call or change ANC mode during a call, Hold either earbud for 2 seconds: switch between ANC and Transparency modes, Hold both earbuds for 3 seconds: enter pairing mode for a second device4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Controls table for dual earbuds and single earbud use. A case button is separate.

Remappable controls

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

Yes9Maker product pageservice.soundcore.com/article-description/How-to-Improve-Call-Quality-on-Anker-Liberty-Buds-2Read 20 October 2026The app Controls page assigns functions to touch gestures. Scarbir says single tap, double tap, triple tap and hold can be fully customized.

Voice assistant

Not available

Phone's voice assistant9Maker product pageservice.soundcore.com/article-description/How-to-Improve-Call-Quality-on-Anker-Liberty-Buds-2Read 20 October 2026Touch controls are not assigned to the voice assistant by default. In the app, Controls lets you assign the phone's voice assistant to a double press, triple press or long press.

Sensors and health

2 of 9 differ

In-ear detection

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

Yes15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026The app can turn off automatic pausing when you take an earbud out.

Sensors

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.

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.

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.

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026HearID analyzes the hearing sensitivity at different frequencies with a test in the app. This is a consumer sound test and not a medical test.

Hearing protectioniLimits sudden loud sounds

Not available

Yes7Maker product pageservice.soundcore.com/article-description/How-to-Choose-the-Right-Ambient-Sound-Mode-on-Anker-Liberty-Buds-2Read 20 October 2026Smart Hearing Protection steps in automatically when a sudden loud sound occurs, under Home > Transparency Mode > HearGuard.

Health features

Not available

Not available

Fit and durability

3 of 7 differ

Ear tips includediTip sizes supplied with the product, including the pair fitted to the earbuds. Do not list separately sold sizes as included.

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

XXS, XS, S, M, L4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The wearing guide shows ear tip sizes XXS, XS, S, M and L. M tips are pre-installed. Scarbir counts five tip sizes in the box.

Ear tip materials

Not available

Silicone15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Five sizes of silicone ear tips.

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

Not available

Fins4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Ear fins in sizes 0, 1 and 2. Size 1 is pre-installed. Scarbir calls them ear wings and counts three sizes.

Ear tip fit test

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

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The wearing guide has a Fit Test in the app under Settings.

Dust and water rating, buds

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.

IP554Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026SPECS table: IP55 for the earbuds. The soundcore service page lists IPX55. The manual figure is stored. Scarbir also says IP55. The case has no rating.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

1 of 6 differ

Companion app

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

soundcore4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The manual and the FAQ name the soundcore app. The earbuds appear as Anker Liberty Buds 2 over Bluetooth.

App platforms

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

Android, iOS13Maker product pageservice.soundcore.com/article-description/How-to-Connect-the-soundcore-App-and-Update-Firmware-for-Anker-Liberty-Buds-2Read 20 October 2026The soundcore app runs on iOS 13 or later and on Android.

User firmware updates

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

Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026Firmware update section in the manual.13Maker product pageservice.soundcore.com/article-description/How-to-Connect-the-soundcore-App-and-Update-Firmware-for-Anker-Liberty-Buds-2Read 20 October 2026Firmware updates are installed from the soundcore app with the earbuds in the case.

Finding network

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Precision findingiUWB in the case

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Live translation

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Yes4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026AI Translation section: real-time and face-to-face translation in the soundcore app.

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.

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.

4.7g(0.2 oz)1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026At just 4.7 g. TechRadar says 4.7 g each. Tip size is not stated.14Press articletechradar.com/audio/earbuds-airpods/my-favorite-earbuds-of-the-year-just-got-an-open-ear-makeover-as-this-top-cheap-headphone-brand-debuts-7-new-modelsRead 20 October 2026Weigh 4.7 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.

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.

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

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.

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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.

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.

Hi-Res Audio Wireless1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026The Hi-Res Audio Wireless logo is on the US store listing images next to the LDAC logo.

Communication certifications

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FCC IDs

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.

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Other certifications

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TÜV Rheinland Comfortable Fit1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026TÜV Rheinland Comfortable Fit badge on the listing images. The certificate ID on the badge is 0217010962.

In the box

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In the box

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.

Earbuds, Charging case, Ear tips in 5 sizes, Ear fins in 3 sizes, Charging cable, User manual4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026The manual refers to the provided charging cable and the ear tips and ear fins. The full box list is from Scarbir. The cable type is not stated.15Reviewscarbir.com/tws/anker-liberty-buds-2-reviewRead 20 October 2026Review says the box has 5 sets of ear tips, 3 sets of ear wings and an English manual. The earbuds and case are implied.

Cables included

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Links

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Product page

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

us.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-calls1Maker product pageus.soundcore.com/products/d1206-liberty-buds-2-ai-powered-in-ear-earbuds-for-callsRead 20 October 2026

Spec sheet

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service.soundcore.com/product-description/a08e200000d1QBkAAM5Maker product pageservice.soundcore.com/product-description/a08e200000d1QBkAAMRead 20 October 2026The soundcore service product page for Anker Liberty Buds 2 lists Bluetooth 6.1, codecs, IPX55, battery capacity and battery life.

Manual

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.

salesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdf4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000038554/en_US/000038554.pdfRead 20 October 2026English user guide D1206, 12 pages, created 18 September 2026.

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.

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

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