Earbuds / Compare

soundcore AeroFit 2 vs soundcore V20i

A

Product A: soundcore

AeroFit 2

58 of 166 known

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B

Product B: soundcore

V20i

60 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

Asoundcore AeroFit 2

Bsoundcore V20i

General

5 of 8 differ

Series

AeroFit3Maker product pageankerjapan.com/products/a3874Read 13 October 2026Listed with the Soundcore AeroFit series.

Not available

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

A3874, A3874Z11, A3874Z21, A3874Z61, A3874Z31, A3874Z81, A3874G11, A3874G21, A3874G61, A3874G311Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026Store variants A3874Z11, Z21, Z61, Z31 and Z81. The EU store lists A3874G11, G21, G61 and G31.5Measurementsoundguys.com/anker-soundcore-aerofit-2-review-126119Read 13 October 2026

A3876, A3876Z11, A3876Z21, A3876Z31, A3876G11, A3876G21, A3876G313Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876QSG.pdfRead 15 October 2026Guide prints Model A3876 / A3876L / A3876R. Colour codes Z11, Z21 and Z31 come from the US store and Anker Japan. G11, G21 and G31 come from the German Soundcore store.

GTIN / EAN

194644036393, 194644210137, 194644210144, 194644210151, 194644262334, 194644284701, 194644284992, 194644284961, 1946442849851Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026Variant barcodes from the US store product data and the EU store product data.

194644060466, 194644060459, 1946440604424Maker product pageus.soundcore.com/products/soundcore-v20i.jsRead 15 October 2026Store barcodes: Black A3876Z11 194644060466, White A3876Z21 194644060459, Blue A3876Z31 194644060442. The German store lists the same barcodes for A3876G11, A3876G21 and A3876G31.

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

Not available

Not available

Status

Available6Spec databasesoundguys.com/product/soundcore-aerofit-2Read 13 October 2026Listed with a current Amazon US price.

Available4Maker product pageus.soundcore.com/products/soundcore-v20i.jsRead 15 October 2026

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

Not available

Not available

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

Not available

Not available

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

$99.995Measurementsoundguys.com/anker-soundcore-aerofit-2-review-126119Read 13 October 2026Spec table lists a price of $99.99.7Reviewdigitaltrends.com/home-theater/soundcore-aerofit-2-reviewRead 13 October 2026MSRP $100.

$49.997Press articlekotaku.com/forget-shokz-anker-clears-out-soundcore-v20i-open-ear-headphones-at-nearly-50-off-2000702161Read 15 October 2026Kotaku says the V20i debuted in 2024 at just $50. The maker US store regular price is 49.99 USD and has not changed. No maker launch announcement was found, so the exact launch label is read from those two.

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, EU1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 20262Maker product pageeu.soundcore.com/products/a3874-aerofit-2-open-earbuds.jsRead 13 October 2026EU store product data with SKUs A3874G11, G21, G61 and G31.

US, DE, JP5Maker product pagede.soundcore.com/products/a3876-v20i-open-ear-earbuds.jsRead 15 October 2026Maker stores for the US and Germany and a maker page for Japan.

ColoursiThe maker's own colour names

Midnight Black, Pearl White, Minty Green, Midnight Blue, Brown, Black, Beige, Navy Blue1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026US store colours Midnight Black, Pearl White, Minty Green, Midnight Blue and Brown. EU store colours Black, Beige, Minty Green and Navy Blue. The EU store spells one colour Minity Green.

Black, White, Blue4Maker product pageus.soundcore.com/products/soundcore-v20i.jsRead 15 October 2026US store option names are Black, White and BIue. The last is a typo for Blue. Anker Japan calls the same A3876Z31 colour Navy.

Segment

Sport6Spec databasesoundguys.com/product/soundcore-aerofit-2Read 13 October 2026Catalogued under sports and fitness headphones.

Not available

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.

Open-ear1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026Open-ear headphones with 4-level adjustable ear hooks.

Open-ear1Maker product pageankerjapan.com/products/a3876Read 15 October 2026

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

Ear hook1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026

Ear hook1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Page text describes ear hooks with four adjustable angle positions that hold the earbuds in place.

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

Either bud4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026The guide has a section for single earbud use.

Either bud2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Manual has a mono mode for single-earbud use with a double tap for play and pause. It does not name a primary earbud.

RGB lighting

Not available

Yes1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Page text describes customisable colourful lights on the earbuds.

Drivers and sound

5 of 17 differ

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

Asoundcore AeroFit 2

Type	Count per earbud
Dynamic	1

Source1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 202620 mm x 11.5 mm racetrack drivers with BassTurbo acoustics. The driver is rectangular, so no circular diameter is stored.3Maker product pageankerjapan.com/products/a3874Read 13 October 2026Dynamic driver, 20 mm x 11.5 mm.

Bsoundcore V20i

Type	Diameter (mm)	Count per earbud
Dynamic	16	1

Source1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Table row reads 16mm dynamic. One driver per earbud. The acoustic role is not published.

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

Dynamic3Maker product pageankerjapan.com/products/a3874Read 13 October 2026Dynamic driver in the comparison table.

Dynamic1Maker product pageankerjapan.com/products/a3876Read 15 October 2026

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

Not available

16mm=CalculatedFrom Drivers per bud

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

1=CalculatedFrom Drivers per bud

1=CalculatedFrom Drivers per bud

Diaphragm material

Not available

Titanium-coated dome4Maker product pageus.soundcore.com/products/soundcore-v20i.jsRead 15 October 2026Maker text: 16mm drivers with titanium-coated domes and BassUp technology.

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

Min20 HzMax40 kHz4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 202620 to 20 kHz, and 20 to 40 kHz with LDAC enabled.

Min20 HzMax20 kHz2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Specification table row reads 20 to 20 kHz. No codec or test condition is given.

Impedance

16Ω4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026

16Ω2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Specification table row reads 16 ohm. One retailer listing gives 11 ohm.

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.

Not available

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.

Not available

Not available

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

Not available

Not available

Personalised soundiA profile from a hearing test or ear scan

Not available

Not available

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.

87Reviewdigitaltrends.com/home-theater/soundcore-aerofit-2-reviewRead 13 October 2026Optional 8-band equalizer in the app. The French guide also names eight sliders on the custom equalizer page.

Not available

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

Not available

Not available

Volume limit

Not available

Not available

Spatial audio

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

3D Surround Sound3Maker product pageankerjapan.com/products/a3874Read 13 October 2026Supports 3D audio.7Reviewdigitaltrends.com/home-theater/soundcore-aerofit-2-reviewRead 13 October 20263D Surround Sound setting in the app.

Not available

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

Not available

Not available

Noise cancelling

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Active noise cancelling

No3Maker product pageankerjapan.com/products/a3874Read 13 October 2026Noise cancelling is not available on the AeroFit 2.

No5Maker product pagede.soundcore.com/products/a3876-v20i-open-ear-earbuds.jsRead 15 October 2026German store text says the V20i open-ear earbuds have no active noise cancelling.

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.

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Transparency mode

Not available

Not available

Adjustable transparency

Not available

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

Not available

Not available

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

Not available

Not available

Measured

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

The bass rolls off steeply below about 125 Hz. Between 1.6 kHz and 6.3 kHz the response sits 7 to 16 dB above the SoundGuys preference curve.5Measurementsoundguys.com/anker-soundcore-aerofit-2-review-126119Read 13 October 2026Measured against the SoundGuys preference curve in the SoundGuys lab, from the product page data points.6Spec databasesoundguys.com/product/soundcore-aerofit-2Read 13 October 2026Lab data points on the product page, SoundGuys 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

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

Clear voices in ideal conditions. Not especially good at rejecting background noise in the simulated office test. Voices stay audible in the windy test.5Measurementsoundguys.com/anker-soundcore-aerofit-2-review-126119Read 13 October 2026Demo recordings in ideal, office, street, windy and reverberant conditions. Firmware 1.42 and app 3.7.3.

Not available

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.

Not available

Not available

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

Not available

Not available

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

1 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.

43Maker product pageankerjapan.com/products/a3874Read 13 October 2026Call noise reduction listed as 4 mic and AI.6Spec databasesoundguys.com/product/soundcore-aerofit-2Read 13 October 2026

44Maker product pageus.soundcore.com/products/soundcore-v20i.jsRead 15 October 2026Maker text: four mics with an AI algorithm for 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.

Not available

44Maker product pageus.soundcore.com/products/soundcore-v20i.jsRead 15 October 2026Maker lists four microphones. The split between earbuds is not published. No ANC microphones because there is no ANC.

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

AI3Maker product pageankerjapan.com/products/a3874Read 13 October 2026

AI4Maker product pageus.soundcore.com/products/soundcore-v20i.jsRead 15 October 2026Maker text calls the call algorithm AI enhancement. Anker Japan calls it AI noise reduction.

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

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Chip

Not available

Not available

Connections

Bluetooth3Maker product pageankerjapan.com/products/a3874Read 13 October 2026Bluetooth 5.4 only.

Bluetooth2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Pairing is by Bluetooth. The product has no 2.4 GHz receiver or wired input.

Bluetooth

5.43Maker product pageankerjapan.com/products/a3874Read 13 October 20264Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026

5.41Maker product pageankerjapan.com/products/a3876Read 15 October 2026

Bluetooth codecs

SBC, AAC, LDAC1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026LDAC is named on the maker page. SBC and AAC come from the Anker Japan page.3Maker product pageankerjapan.com/products/a3874Read 13 October 2026Comparison table lists SBC, AAC and LDAC.

SBC, AAC1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Table row for supported codecs reads SBC / AAC. A retailer listing that names LDAC is not supported by the maker.

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.

Yes3Maker product pageankerjapan.com/products/a3874Read 13 October 2026

Yes2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Manual explains connecting two devices at the same time. It must be turned on in the Soundcore app first.

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

23Maker product pageankerjapan.com/products/a3874Read 13 October 2026Connects to 2 devices at the same time.6Spec databasesoundguys.com/product/soundcore-aerofit-2Read 13 October 2026

22Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026

Multipoint with LDACiMany buds turn multipoint off on LDAC

No7Reviewdigitaltrends.com/home-theater/soundcore-aerofit-2-reviewRead 13 October 2026Enabling LDAC gives up multipoint connectivity.

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

Not available

Not available

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

Not available

10m2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Specification table row reads Bluetooth operating range 10 m.

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

0 of 3 differ

Low latency mode

Yes8Reviewmezha.ua/en/reviews/oglyad-anker-soundcore-aerofit-2-301914Read 13 October 2026The app main screen offers a Gaming Mode described as a low latency mode.

Yes2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Manual names game mode among the Soundcore app functions. A reviewer says it can only be switched from the app. No latency figure is published.

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

Not available

Compatibility

1 of 4 differ

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

Not available

Not available

Connection per platformiDocumented audio connection for each platform. USB-C phone routes require a compatible port. Platform edition and microphone restrictions belong in source notes or feature requirements.

Not available

Not available

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

Asoundcore AeroFit 2

Not available

Bsoundcore V20i

Feature	Needs
Multipoint	Turn on multipoint in the Soundcore app first, then connect the second device from the app or by holding both touch areas for 3 seconds.
Earbud lights	Turn on the lights in the Soundcore app. Effect, brightness, colour and automatic switch-off are set in the app.
Game mode, equalizer, remapped touch controls and firmware updates	Soundcore app on Android or iOS. The app does not support digital audio players.

Source2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Manual says the app unlocks equalizer, game mode, touch controls, lights and firmware updates. Japan page says the app does not support digital audio players.

Official licence

Not available

Not available

Battery and charging

8 of 13 differ

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

Not available

Not available

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

Not available

No3Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876QSG.pdfRead 15 October 2026Safety text says the product contains non-replaceable Li-ion batteries and tells users not to replace them.

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 AeroFit 2

Mode	Includes case recharges	Hours (h)
ANC off	No	10
ANC off	Yes	42

Source1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026Up to 10 hours on a single charge and up to 42 hours with the case. The UK store page states a total of 35 hours with the case.3Maker product pageankerjapan.com/products/a3874Read 13 October 202610 hours for the earbuds alone and 42 hours with the charging case.

Bsoundcore V20i

Mode	Includes case recharges	Hours (h)
ANC off	No	8
ANC off	Yes	36

Source1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Table gives up to 8 hours for the earbuds and up to 36 hours with the case. No codec, volume or lights setting is stated. Earbud lights reduce playtime per a reviewer, but the maker states no figure. The FAQ also gives up to 6 hours for calls without naming the component scope, so it is not stored.

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

8h=CalculatedFrom Claimed battery life

Playback per charge with ANC (claimed)iHighest claimed earbuds-only playback with ANC enabled. Codec and spatial-audio conditions belong in the source note.

Not available

Not available

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

8h=CalculatedFrom Claimed battery life

Total with case (claimed)iHighest claimed runtime including the initial earbud charge and all case recharges. It is not the case recharge runtime alone.

42h=CalculatedFrom Claimed battery life

36h=CalculatedFrom Claimed battery life

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

Not available

Not available

Talk time (claimed)

Not available

Not available

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

60min4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026Earbuds charge within 1 hour. Stored as 60 minutes.

90min1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Table row reads about 1.5 hours for the earbuds and about 4 hours for the earbuds plus case.

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.

Earbuds charge within 1 hour. The case and earbuds together take about 2.2 hours by USB-C cable and about 2.6 hours on a wireless charger. Input is 5 V 1.2 A.4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026Case and earbuds about 2.2 hours by cable and 2.6 hours wireless in the French and Danish guides. Input 5 V 1.2 A.

Maker lists about 1.5 hours for the earbuds and about 4 hours for the earbuds plus the charging case. The manual gives these as maximums. Case input is 5 V 0.52 A.1Maker product pageankerjapan.com/products/a3876Read 15 October 2026

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

10min3Maker product pageankerjapan.com/products/a3874Read 13 October 202610 minutes of charging gives up to 4 hours of playback.

10min1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Page text says about 10 minutes of charging gives up to 1 hour of music playback.

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.

4h3Maker product pageankerjapan.com/products/a3874Read 13 October 2026

1h1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Maker states 1 hour after 10 minutes of charging. The charging path, ANC, codec and volume are not stated. Read as earbuds-only playback because the case totals are given separately.

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.

750mAh4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026Specifications page lists battery capacity 750 mAh. This is the charging case battery.

700mAh2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Specification table lists one battery capacity of 700 mAh without naming the component. Multitronic describes the 700 mAh as the charging case battery. The earbud capacity is not published.

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

No3Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876QSG.pdfRead 15 October 2026Same statement applies to the whole product.

Case charging port

USB-C4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026USB-C charging port on the case.

USB-C1Maker product pageankerjapan.com/products/a3876Read 15 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.

102min4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026Case charge time about 1.7 hours by USB-C cable. Stored as 102 minutes.

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Wireless charging

Yes1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026Place the case on a wireless charger to recharge.

No8Reviewscarbir.com/tws/soundcore-v20i-reviewRead 15 October 2026Review lists no wireless charging.

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

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

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

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Screen on case

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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.

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Controls

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

Touch3Maker product pageankerjapan.com/products/a3874Read 13 October 2026

Touch2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026

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

Touch7Reviewdigitaltrends.com/home-theater/soundcore-aerofit-2-reviewRead 13 October 2026Volume gestures can be assigned in the app. They are not set by default.

Touch2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Volume up and down are listed as functions that the Soundcore app can assign to a touch gesture.

Gestures

Right double tap: play or pause, Left double tap: next track, Double tap during a call: answer, Hold for 2 seconds during a call: reject or end4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026Default touch controls in the guide. Other actions are set in the soundcore app.

Right double tap: play or pause, Left double tap: next track, Double tap during a call: answer, Hold for 2 seconds during a call: reject or end2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Stereo mode table: right double tap plays or pauses, left double tap skips forward, a double tap on either earbud answers a call, a 2 second hold on either earbud rejects or ends a call. Back, volume and voice assistant are set in the app.

Remappable controls

Yes4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 20267Reviewdigitaltrends.com/home-theater/soundcore-aerofit-2-reviewRead 13 October 2026

Yes2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026

Voice assistant

Not available

Voice assistant2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026

Sensors and health

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In-ear detection

No6Spec databasesoundguys.com/product/soundcore-aerofit-2Read 13 October 2026Auto pause is listed as No.

Not available

Sensors

Not available

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Heart rate sensor

Not available

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Skin temperature sensingiA documented skin temperature sensor. This is separate from the operating temperature range or a heart-rate sensor.

Not available

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Hearing aid featureiAmplification for mild to moderate hearing loss

Not available

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Medical clearances

Not available

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Hearing testiA documented hearing assessment feature, including consumer sound-personalization tests. Medical diagnostic clearance must be stated separately.

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Hearing protectioniLimits sudden loud sounds

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Health features

Not available

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Fit and durability

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

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Ear tip materials

Not available

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

Ear hook1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 20263Maker product pageankerjapan.com/products/a3874Read 13 October 2026Ear hook angle adjustable in 4 steps.

Ear hook8Reviewscarbir.com/tws/soundcore-v20i-reviewRead 15 October 2026Ear hooks hold the earbuds in four adjustable positions.

Ear tip fit test

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Dust and water rating, buds

IP553Maker product pageankerjapan.com/products/a3874Read 13 October 20264Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026

IP551Maker product pageankerjapan.com/products/a3876Read 15 October 2026Table row reads IP55. The maker text names SweatGuard. The case is not given a rating.

Dust and water rating, case

Not available

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Water resistance depth

Not available

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Software

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Companion app

soundcore4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026

soundcore2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Manual names the Soundcore app with Google Play and App Store links.

App platforms

Android, iOS4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 20266Spec databasesoundguys.com/product/soundcore-aerofit-2Read 13 October 2026

Android, iOS2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026

User firmware updates

Yes4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026

Yes2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Manual describes firmware updates through the Soundcore app.

Finding network

Not available

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Precision findingiUWB in the case

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Live translation

Yes1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026AI translation for 100 languages in the soundcore app, with the app and firmware updated.

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Dimensions and weight

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

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9.3g(0.3 oz)1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Table row reads about 9.3 g / about 76.4 g without labels. The 76.4 g value is the earbuds plus case. Read 9.3 g as one earbud because two earbuds and a 57.8 g case would total 76.4 g in retailer listings. The maker row is unlabelled, so this reading is an inference.

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.

65g(2.3 oz)5Measurementsoundguys.com/anker-soundcore-aerofit-2-review-126119Read 13 October 2026Spec table lists case weight 65 g. Digital Trends also lists 65 g for the charging case.7Reviewdigitaltrends.com/home-theater/soundcore-aerofit-2-reviewRead 13 October 2026Weight listed as 65 g for the charging case.

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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.

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Certifications

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

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Communication certifications

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FCC IDs

Not available

2AOKB-A3876L, 2AOKB-A3876R3Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876QSG.pdfRead 15 October 2026Left earbud model A3876L FCC ID 2AOKB-A3876L. Right earbud model A3876R FCC ID 2AOKB-A3876R.

Other certifications

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In the box

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In the box

Earbuds, Charging case, USB-C charging cable, Quick guide with a QR code for the app8Reviewmezha.ua/en/reviews/oglyad-anker-soundcore-aerofit-2-301914Read 13 October 2026The package has a charging case with the earbuds, a USB Type-C charging cable and a short instruction sheet with a QR code for the app.

Soundcore V20i earbuds, Charging case, USB-C cable, Quick start guide1Maker product pageankerjapan.com/products/a3876Read 15 October 2026Package list: Soundcore V20i, charging case, USB-C cable, quick start guide, warranty and customer support information.

Cables included

Asoundcore AeroFit 2

Type	Count
USB-C charging cable	1

Source8Reviewmezha.ua/en/reviews/oglyad-anker-soundcore-aerofit-2-301914Read 13 October 2026USB Type-C charging cable. The length is not stated.

Bsoundcore V20i

Type	Count
USB-C	1

Source1Maker product pageankerjapan.com/products/a3876Read 15 October 2026One USB-C cable. The length is not stated.

Links

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Product page

us.soundcore.com/products/a3874-aerofit-2-open-earbuds1Maker product pageus.soundcore.com/products/a3874-aerofit-2-open-earbudsRead 13 October 2026

us.soundcore.com/products/soundcore-v20i4Maker product pageus.soundcore.com/products/soundcore-v20i.jsRead 15 October 2026Maker US store page.

Spec sheet

Not available

www.ankerjapan.com/products/a38761Maker product pageankerjapan.com/products/a3876Read 15 October 2026Japanese page with the product specification table. It states size, weight, IP rating, Bluetooth, codecs, playback, charging time, charging port, driver and model numbers.

Manual

lp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdf4Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3874Manual.pdfRead 13 October 2026

lp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdf2Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3876Manual.pdfRead 15 October 2026Anker Japan hosts the A3876 user manual in Japanese. English panels were not found. The product specification table is on the last page.

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.

Not available

1.5years6Maker product pageus.soundcore.com/pages/warrantyRead 15 October 2026US store lists 18 months for all headphone series. The quick start guide also gives an 18-month limited warranty, with 12 months for India.

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