Earbuds / Compare

soundcore Liberty 4 Pro vs TOZO NC3

A

Product A: soundcore

Liberty 4 Pro

86 of 166 known

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B

Product B: TOZO

NC3

66 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

Asoundcore Liberty 4 Pro

BTOZO NC3

General

4 of 8 differ

Series

Not available

NC2Maker product pagetozostore.com/products/nc3-headphone.jsonRead 20 October 2026Store product tag: NC Series.

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

T11141, NC3001Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Charging case label in the maker's product photo: Model No. T11141.9Retailer pageamazon.com/dp/B0DGKWQMSMRead 21 October 2026Item details: Model Number T11141, Model Name NC3, Manufacturer Part Number NC300. The T11141 label is on the case in the maker photo.

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.

6971681319917, 717687768153, 717687768146, 8101029814242Maker product pagetozostore.com/products/nc3-headphone.jsonRead 20 October 2026Store variant barcodes. Black is an EAN-13 and Rose Gold and Blue are UPC-A, all with valid check digits. The Light Green and Red entries are not valid barcodes and are left out.9Retailer pageamazon.com/dp/B0DGKWQMSMRead 21 October 2026Item details: UPC 810102981424 on the TOZO Amazon listing for Black. It has a valid check digit. The other three codes come from the maker store.

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

Not available

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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 pagetozostore.com/products/nc3-headphone.jsonRead 20 October 2026All five variants were for sale at $40.99 on 2026-10-20.

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.

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.

Not available

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.

Not available

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.

Black, Rose Gold, Blue, Light Green, Red2Maker product pagetozostore.com/products/nc3-headphone.jsonRead 20 October 2026Store colour options: Black, Rose Gold, Blue, Light Green, Red.

Segment

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

Music1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026TOZO files it under Headphones, In-Ear and Active Noise Cancelling.

Design

0 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 pagetozostore.com/products/nc3-headphoneRead 20 October 2026Store tag: In-Ear. The photos show sealed ear tips.

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.

Stem1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Maker product photos: each bud has a stalk with the TOZO name on it.

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

Either bud8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Section 5.2 Wearing one earbud: either L or R plays or pauses and skips tracks. Active noise cancellation is not available with a single earbud.

RGB lighting

Not available

Not available

Drivers and sound

8 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.

BTOZO NC3

Type	Diameter (mm)	Count per earbud
Dynamic	12	1

Source1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Feature text and FAQ: 12mm dynamic drivers. The maker's cutaway image shows one driver in the bud.

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

Dynamic1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026

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

10.5mm=CalculatedFrom Drivers per bud

12mm=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.

Not available

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 kHz9Retailer pageamazon.com/dp/B0DGKWQMSMRead 21 October 2026Audio: Frequency Response 20 hertz with no upper limit. The review at reviewsbestheadphones.com gives 20 Hz to 20 kHz from the listing, so that range is stored. No tolerance or conditions are stated.11Reviewreviewsbestheadphones.com/tozo-nc3-reviewRead 21 October 2026Specifications taken from the listing: frequency response 20 Hz to 20 kHz. No conditions. The page gives no measured response.

Impedance

Not available

32Ω9Retailer pageamazon.com/dp/B0DGKWQMSMRead 21 October 2026Audio: Impedance 32 ohm. The listing also shows a sensitivity of 117 dB, while the WirelessEmporium review reads 100 dB from the listing, so sensitivity is left out.11Reviewreviewsbestheadphones.com/tozo-nc3-reviewRead 21 October 2026Specifications: 32 ohms, from the listing.

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

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

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.

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

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.

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.

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.

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.

Not available

Noise cancelling

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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 pagetozostore.com/products/nc3-headphoneRead 20 October 2026

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

Not available

Hybrid1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Page headline: Hybrid Active Noise Cancelling. The product image labels a feedback ANC mic and a feedforward ANC mic on each bud.

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.

41Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Product image: each bud has a feedback ANC mic, a feedforward ANC mic and a separate talk mic. Counted across both buds.

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 pagetozostore.com/products/nc3-headphoneRead 20 October 2026FAQ: adaptive noise cancellation that automatically adjusts to your surroundings. The adjustment conditions are not stated.

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.

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

45dB1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Product image: 45 dB. The image also says it blocks out 99.5 percent of noise. No frequency or test conditions are stated.

Transparency mode

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

Yes1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026The app screenshot on the page shows a Transparency Mode button.

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.

Yes1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026The app screenshot on the page shows a Reduce Wind Noise setting. This is a selectable setting, not a mesh or shape change.

Measured

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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

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

SoundGuys 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.

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

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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.

BTOZO NC3

Not available

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)

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

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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

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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 pagetozostore.com/products/nc3-headphoneRead 20 October 2026Feature text: Crystal Clear Calls with a 6-mic ENC system that filters out background noise, and 6 built-in microphones. Stored as the 6 microphones the maker says serve calls across both earbuds. The product image labels a separate talk mic and two ANC mics on each bud, and the manual labels one Calling MIC per bud, so the call roles of the ANC microphones are the maker claim only.

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 pagetozostore.com/products/nc3-headphoneRead 20 October 2026Feature text: 6 built-in microphones. The product image shows 3 per bud. The FAQ also says triple-mic noise reduction.

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

Not available

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

6 of 18 differ

Chip

Not available

Not available

Connections

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

Bluetooth1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026

Bluetooth

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

5.31Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Feature text: Bluetooth 5.3. No codecs are listed.

Bluetooth codecs

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

Not available

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

No11Reviewreviewsbestheadphones.com/tozo-nc3-reviewRead 21 October 2026Review says the NC3 lacks a multi-device connection and lists multipoint as not supported. Another review calls multipoint not mentioned.

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.

Not available

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

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Fast pairing

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

Not available

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

20m9Retailer pageamazon.com/dp/B0DGKWQMSMRead 21 October 2026Connectivity: Bluetooth Range 20 meters. The maker store gives no range. This is the brand listing claim with no test conditions.

Wireless receiveri2.4 GHz dongle

Not available

Not available

Receiver connector

Not available

Not available

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

Not available

Not available

Latency

3 of 3 differ

Low latency mode

Not available

Yes1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Feature text: low-latency mode. No latency figure is stated.

Claimed latency

Asoundcore Liberty 4 Pro

Not available

BTOZO NC3

Connection	Latency (ms)
Bluetooth	45

Source9Retailer pageamazon.com/dp/B0DGKWQMSMRead 21 October 2026Audio: Audio Latency 45 milliseconds. The listing names no mode, so the row has no mode. The product page says low-latency mode reduces lag, so 45 ms may be the low-latency figure.

Lowest claimed latency

Not available

45ms=CalculatedFrom Claimed latency

Compatibility

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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, iOS9Retailer pageamazon.com/dp/B0DGKWQMSMRead 21 October 2026Item details: compatible with iOS and Android mainstream mobile phones, tablets, laptops and other Bluetooth devices. Only iOS and Android are named as platforms. The listing also gives a case size of 6.2 cm length, 26.5 mm width and 40.3 mm height without saying how the axes map to the case, so case_dimensions_mm is left out. The listing headline says 68H, the maker page says 55 hours in places.

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 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

BTOZO NC3

Not available

Official licence

Not available

Not available

Battery and charging

12 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.

50mAh4Maker product pagetozostore.com/blogs/news/tozo-earbuds-best-battery-lifeRead 20 October 2026Maker comparison table: NC3 battery capacity 50mAh in the earbuds and 500mAh in the charging case. Rated capacity per bud.

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.

BTOZO NC3

Mode	Includes case recharges	Hours (h)
ANC off	No	13
ANC off	Yes	55
ANC on	No	9.5
ANC on	Yes	40

Source3Maker product pagetozostore.com/blogs/news/nc3-vs-open-earring-fitness-comparisonRead 20 October 2026Maker blog: 13 hours on a single charge and 55 hours with the case with ANC off, up to 9.5 hours and up to 40 hours with the case with ANC on. The product page FAQ and image also give 55 hours. The product page headline and description say 68 hours. That 68 hour figure is not stored. No codec or volume is stated.

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

13h=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

9.5h=CalculatedFrom Claimed battery life

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

10h=CalculatedFrom Claimed battery life

13h=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

55h=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

40h=CalculatedFrom Claimed battery life

Talk time (claimed)

4.5h=CalculatedFrom Claimed battery life

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.

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.

Not available

Charging guidanceiPublished charging guidance or estimates that do not separate earbuds and case. Preserve the maker’s component scope and limits. Do not assign an unspecified or combined estimate to a component-specific numeric field.

The 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 product page image lists 1.5 hours of fast charging for the earbuds and does not give a starting charge level or say whether the earbuds are full after it. The manual says a full charge for both the earbuds and the case takes approximately 2 hours, and that the case will not charge the earbuds when its own battery is below 5 percent.1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Product image: 1.5 hrs fast charging for earbuds, next to the 13 hours and 55 hours figures. Nothing else says what the 1.5 hours measures.8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Section 7.3: a full charge for both the earbuds and the case needs approximately 2 hours. The case will not charge the earbuds when its battery is below 5 percent. Page 12: the charger must deliver between 2.5 W and 5.0 W, and 5.0 W gives the maximum charging speed.

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

10min5Reviewpocketgamer.com/hardware-reviews/tozo-nc3Read 20 October 2026Review of 2025-09-03: quick charge claim of 10 minutes for about 1 hour of use.

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.

1h5Reviewpocketgamer.com/hardware-reviews/tozo-nc3Read 20 October 2026Published as about 1 hour. ANC state, codec and volume are not stated. This is a claim, not a test.

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.

500mAh1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Charging case label in the maker's product photo: 500mAh, 3.7V, 1.85Wh, rated.

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-C1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Product image shows a USB-C port on the case.

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

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.

120min8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Section 7.3: approximately 2 hours for both the earbuds and the case together by cable. The TOZO Amazon listing gives 1.5 hours for the case alone. The manual figure is stored with the earbuds inside the case.

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.

No6Reviewseriousinsights.net/tozo-nc3-earbudsRead 20 October 2026Review lists no wireless charging as a con. Charging is by the USB-C port on the case.

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

Not available

Not available

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

Not available

Not available

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

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.

Yes1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Page highlights: LED Digital Display on the case. It shows the charge of each bud and the case.

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

Touch3Maker product pagetozostore.com/blogs/news/nc3-vs-open-earring-fitness-comparisonRead 20 October 2026Maker blog spec table: smart touch controls, Yes. No gestures are listed.

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

Touch8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Section 5.1: long press L lowers and long press R raises the volume on the touch area.

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 left: previous song, Double tap right: next song, Tap left or right: play or pause music, Long press left: volume down, Long press right: volume up, Tap left or right on an incoming call: answer, Hold left or right for 2 seconds during a call: hang up, Hold left or right for 2 seconds on an incoming call: reject, Tap left once: switch between Transparency Mode and Active Noise Cancellation Mode, Triple tap left: switch back to Normal Mode, Triple tap right: wake up the voice assistant, Tap left five times: switch low-latency mode on or off8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Sections 5.1 to 5.6, English wording shortened. Left and right are the L and R touch areas.

Remappable controls

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

Yes8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Section 8.0: most controls are customizable in the TOZO app.

Voice assistant

Not available

Phone voice assistant8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Section 5.5: triple tap R wakes up the voice assistant. No assistant is named, so it is the phone assistant.

Sensors and health

3 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

No6Reviewseriousinsights.net/tozo-nc3-earbudsRead 20 October 2026Review of 2025-02-18 lists no in-ear detection as a con.

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.

Not available

Hearing protectioniLimits sudden loud sounds

Not available

Not available

Health features

Not available

Not available

Fit and durability

2 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, L, XL8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Section 1.0 shows six pairs labelled XXS, XS, S, M, L and XL, with M pre-fitted. The TOZO Amazon listing names XS to XXL instead. The manual is stored.

Ear tip materials

Not available

Not available

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

Not available

Not available

Ear tip fit test

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

Not available

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.

IPX81Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Page highlights: IPX8 water resistance for the earbuds.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

2 of 6 differ

Companion app

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

TOZO app1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Feature text: TOZO app with 32 preset EQs.

App platforms

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

Android, iOS7Reviewtechbuzzireland.com/2025/06/26/tozo-nc3-anc-earbuds-reviewRead 20 October 2026Review: the reviewer tested the TOZO app on Android and iOS.

User firmware updates

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

Yes8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Section 8.0: the app notifies you of available earbud firmware updates once connected.

Finding network

Not available

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Yes6Reviewseriousinsights.net/tozo-nc3-earbudsRead 20 October 2026Review: the TOZO app has real-time translation and face-to-face translation.

Dimensions and weight

3 of 4 differ

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

5.5g(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.

5g(0.2 oz)10Reviewbytesnbits.co.uk/tozo-nc3-earbudsRead 21 October 2026Review of 2 March 2025: the earbuds weigh 5 g each. Stated as a rounded figure. The Amazon listing gives 40.6 g for the full set and 31.2 g for the case, which fits about 5 g per earbud.

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

Not available

Not available

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

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.

31.2g(1.1 oz)9Retailer pageamazon.com/dp/B0DGKWQMSMRead 21 October 2026Measurements: Carrying Case Weight 31.2 g and Item Weight 40.6 g. Read as the empty case and the full set. The maker publishes no weight.

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.

Not available

Certifications

1 of 3 differ

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

Hi-Res Audio 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.

Not available

Communication certifications

Not available

Not available

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.

Not available

Other certifications

Not available

Not available

In the box

2 of 2 differ

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 (XXS, XS, S, M, L, XL), USB to USB-C charging cable, User manual, Quick guide3Maker product pagetozostore.com/blogs/news/nc3-vs-open-earring-fitness-comparisonRead 20 October 2026Maker blog: 6 pairs of eartips in different sizes. The cable comes from the Pocket Gamer review. Pocket Gamer says the earbuds have no swappable ear cushions, which conflicts with the maker.8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026Section 1.0: earbuds with M ear tips fitted, charging case, USB-C cable, extra ear tips, user manual and quick guide.

Cables included

Asoundcore Liberty 4 Pro

Not available

BTOZO NC3

Type	Count
USB to USB-C charging cable	1

Source5Reviewpocketgamer.com/hardware-reviews/tozo-nc3Read 20 October 2026Review: the box includes a USB to USB-C cable. The length is not stated.

Links

Not compared

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

tozostore.com/products/nc3-headphone1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026

Spec sheet

Not available

Not available

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.

s3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdf8Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/NC3.pdfRead 21 October 2026English section on pages 3 to 12 of the NC3 manual on the maker file server. The manual lists no specification table, Bluetooth version, codec or weight.

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

Not available

Not available

Warranty

0 of 1 differ

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

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

1.5years1Maker product pagetozostore.com/products/nc3-headphoneRead 20 October 2026Store banner: 12+6 months hassle-free warranty. Stored as 1.5 years for the TOZO US store.

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