Earbuds / Compare

Samsung Galaxy Buds2 vs TOZO A1

A

Product A: Samsung

Galaxy Buds2

79 of 166 known

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B

Product B: TOZO

A1

51 of 166 known

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Every value links to where we found it.

Only differences

ASamsung Galaxy Buds2

BTOZO A1

General

7 of 8 differ

Series

Galaxy Buds2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

A Series1Maker product pagetozostore.com/products/a1Read 15 October 2026The store tags the product as A Series.

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

SM-R177NZKAEUA, SM-R1772Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Exact 2021 UK Graphite SM-R177NZKAEUA. Shared SM-R177 is established by its original EU manual. Buds2 Pro, Buds3 and FE are separate models.

A1 Mini1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Model: A1 Mini. The pairing name is TOZO-A1. No regulatory model code is published.

GTIN / EAN

Not available

6971681319900, 6971681319887, 6971681319870, 6971681319894, 6971681319856, 69716813198638Maker product pagetozostore.com/products/a1.jsRead 15 October 2026Store barcode field for the colours Black 6971681319900, Blue 6971681319887, Green 6971681319870, Light Khaki 6971681319894, White 6971681319856 and Rose Gold 6971681319863. The Orange, Purple and Light Purple options carry internal codes that are not valid barcodes, so they are left out. ShopSavvy lists a different barcode, 6971681317265, for a green A1.

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

11 August 20213Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026

Not available

Status

Not available

Available8Maker product pagetozostore.com/products/a1.jsRead 15 October 2026The store lists the product as available on 2026-10-15.

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

Samsung Galaxy Buds+14Measurementrtings.com/headphones/reviews/samsung/galaxy-buds-plus-truly-wirelessRead 23 October 2026A notice on the RTINGS Galaxy Buds+ review says these headphones were replaced by the Samsung Galaxy Buds2.15Measurementrtings.com/headphones/reviews/samsung/galaxy-buds2-truly-wirelessRead 23 October 2026RTINGS says the Galaxy Buds2 are the next generation of the Galaxy Buds+.

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.

Samsung Galaxy Buds316Measurementrtings.com/headphones/reviews/samsung/galaxy-buds3-truly-wirelessRead 23 October 2026RTINGS says the Galaxy Buds3 are the third generation of Galaxy earbuds, following the Galaxy Buds2.

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.

$149.994Press releasenews.samsung.com/us/galaxy-z-fold3-5g-galaxy-z-flip3-5g-unpacked-2021-next-mobile-innovationRead 5 October 2026Original US maker pricing gives 149.99 USD for standard Buds2. US family launch price, not a conversion of UK pricing.

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.

GB2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

Not available

ColoursiThe maker's own colour names

Graphite, White, Olive, Lavender, Onyx2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Four original finishes plus current Onyx on the maker page. Same generation. Reference photo remains Graphite.

Black, Orange, Blue, Green, Light Khaki, White, Rose Gold, Purple, Light Purple8Maker product pagetozostore.com/products/a1.jsRead 15 October 2026Store option names, verbatim. Blue shows as unavailable on 2026-10-15. The tech specs row Color lists a different set of names, so the store option names are used.

Segment

Music2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

Not available

Design

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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-ear2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

In-ear1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Type: In-ear True Wireless.

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

Stemless2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

Stemless1Maker product pagetozostore.com/products/a1Read 15 October 2026The earbuds are a compact body with no stalk, as shown in the product photos.

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

Either bud5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Page 18 describes mono with one connected bud. Page 36 accessibility enables ANC with one earbud despite default both-bud restriction.

Either bud3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/index.htmlRead 21 October 2026Section 5.0 Voice Assistant: when using a single or both earbuds, triple-tap the L/R earbud. The quick guide reset step also covers the case where only one earbud works. Either earbud is read as usable alone.

RGB lighting

Not available

Not available

Drivers and sound

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

ASamsung Galaxy Buds2

Type	Role	Count per earbud
Dynamic	Woofer	1
Dynamic	Tweeter	1

Source2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20263Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026Two-way woofer and tweeter. Current maker page explicitly says dynamic. Teardown confirms two separate dynamic transducers. Diameter unstated.11Review52audio.com/archives/93500.htmlRead 5 October 2026Separate woofer and tweeter dynamic transducers. J1617G module length about 6.2 mm and thickness 5.89 mm are not circular driver diameters, so not stored as size_mm.

BTOZO A1

Type	Diameter (mm)	Count per earbud
Dynamic	6	1

Source1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Driver: 6 mm dynamic driver. NerdTechy says there is a 6 mm speaker inside each earbud, so one per earbud. No driver role is named.

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

Not available

Dynamic1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Driver: 6 mm dynamic driver.

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

Not available

6mm=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

Not available

High-elastic polymer1Maker product pagetozostore.com/products/a1Read 15 October 2026Feature text Bass Enhancement: the diaphragm utilizes a high-elastic polymer. Stored as published.

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

Not available

Min20 HzMax20 kHz1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Frequency response range: 20 Hz - 20 kHz. Maker figure with no stated conditions.

Impedance

Not available

16Ω4Retailer pageamazon.com/dp/B09N3RYJ66Read 21 October 2026Item details Audio table: Impedance 16 ohm. This matches the label in the maker photo.9Maker product pagecdn.shopify.com/s/files/1/0737/0578/3585/files/a1mini-black-main01.webpRead 15 October 2026Main product photo on the maker store: the label inside the case lid reads Impedance 16 ohm, water resistance IPX5, battery 40 mAh, 3.7 V, 0.148 Wh. The label is read from a marketing photo and no spec table repeats the impedance.

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.

Not available

Not available

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

Normal, Bass boost, Soft, Dynamic, Clear, Treble boost12Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Six named presets. Source explicitly excludes custom EQ. Noise modes and fit test are separate.

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.

Samsung 360 Audio with Dolby Head Tracking2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20266Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026

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.

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Current exact maker page names Dolby Head Tracking with 360 Audio. One UI 3.1 or later, supported apps and content. Added in 2022, not a launch feature.6Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026Model-specific R177XXU0AVC8 dated April 4, 2022 adds 360 Audio on One UI 3.1 or higher. Current product page separately proves head tracking.

Not available

Noise cancelling

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Active noise cancelling

Yes1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

No4Retailer pageamazon.com/dp/B09N3RYJ66Read 21 October 2026Item details Noise Control: Sound Isolation. The Best Buy listing says Noise Cancelling (Active): No. The earbuds use passive isolation only.5Retailer pagebestbuy.com/product/tozo-a1-wireless-earbuds-bluetooth-5-3-lightweight-ipx5-2-mic-ai-calls-premium-sound-bass-32-eqs-charging-case-black/CZT87XXGG7Read 21 October 2026Specifications: Noise Cancelling (Active): No. Listing by a marketplace seller, model A1.

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

Hybrid11Review52audio.com/archives/93500.htmlRead 5 October 2026Actual external feedforward and internal feedback microphone roles explicitly identified. Two ANC microphones per bud means four across the pair. Separate dedicated call mic and bone sensor are not added to ANC count.

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.

411Review52audio.com/archives/93500.htmlRead 5 October 2026

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

Yes1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

Not available

Adjustable transparency

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Exact original manual documents adjustment of ambient sound volume. These are transparency settings, not ANC strength levels.

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.

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Documented low-protrusion physical design reduces wind disruption. This is separate from selectable ANC processing.

Not available

Measured

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

Measured response has elevated sub-bass relative to the reviewer target. Bass can mask some midrange detail.12Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Exact published lab curve and prose. Firmware, codec, target revision and original fixture are unstated. No graph points converted into numeric dB. Numeric measured runtime is omitted because this review and FE comparison give 5 hours 3 minutes while the Pro comparison gives 5 hours 9 minutes with ANC, without resolving the difference.13Reviewsoundguys.com/samsung-galaxy-buds-pro-vs-samsung-galaxy-buds-2-61210Read 5 October 2026Exact Buds2 curve and default-response discussion corroborate relative bass emphasis and midrange masking. Battery paragraph gives 5 hours 9 minutes with ANC at constant 75 dB SPL, conflicting with standalone review and FE comparison at 5 hours 3 minutes. Numeric measured runtime remains omitted. Sibling Buds Pro attenuation and driver details are excluded.

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

Published ideal, office and windy microphone demos. Review reports keyboard noise pickup and weak wind handling.12Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Only ideal, office and windy demos. Exact recording host, firmware and codec are unstated. No subjective votes converted into voice score.

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

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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

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Microphones and calls

3 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.

Not available

24Retailer pageamazon.com/dp/B09N3RYJ66Read 21 October 2026Title and bullets say 2 Mics for AI Calls and the Audio table says 2 Mics ENC Clear Call. The manual labels one calling mic per earbud, so 2 is read as one per earbud.

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

61Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Exact UK Graphite model row gives six physical microphones. Voice Pickup Unit is a vibration sensor, not an extra microphone. Voice-specific physical count is omitted because exact participation of the inner ANC capsule in calls is not established.

24Retailer pageamazon.com/dp/B09N3RYJ66Read 21 October 2026No ANC, so the call microphones are the only microphones. Same evidence as the call microphone count.

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.

Yes11Review52audio.com/archives/93500.htmlRead 5 October 2026Actual ST LIS25BATR dedicated speech-vibration sensor. Teardown explicitly describes bone-vibration voice pickup and call-noise suppression, not merely an unspecified accelerometer.

Not available

Mic noise reduction

AI2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Maker calls its call noise filtering machine-learning based. Marketing three-mic call-system wording does not establish every capsule participating in call pickup.

AI4Retailer pageamazon.com/dp/B09N3RYJ66Read 21 October 2026Bullet: AI-Enhanced ENC for Clear Calls. This is the maker brand store wording. The maker site does not describe the microphones and a 2021 review found no advanced call noise reduction on the first release.

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

BES2500ZP11Review52audio.com/archives/93500.htmlRead 5 October 2026Exact SM-R177 teardown identifies BES2500ZP earbud audio SoC. Case MUA01 and earbud power-management MUB01 are separate. Generic chip LC3 support does not prove shipping earbud LE Audio.

Not available

Connections

Bluetooth5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026

Bluetooth1Maker product pagetozostore.com/products/a1Read 15 October 2026Bluetooth only. No other connection is listed.

Bluetooth

5.21Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

5.31Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Bluetooth version: Bluetooth 5.3. The feature text says Bluetooth 5.3.

Bluetooth codecs

SBC, AAC, Samsung Scalable Codec3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026Original table explicitly Scalable, AAC and SBC. Not the later 24-bit Samsung Seamless Codec. No LC3, LE Audio or Auracast inferred from Bluetooth 5.2 or chipset capability.

AAC, SBC1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Audio codec: AAC/SBC.

Bluetooth profiles

A2DP, AVRCP, HFP1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

HSP, HFP, A2DP, AVRCP1Maker product pagetozostore.com/products/a1Read 15 October 2026Feature text: supports HSP, HFP, A2DP and AVRCP.

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.

No7Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026Maker explicitly states earbuds cannot connect to multiple devices simultaneously. Auto Switch is same-account routing.

Not available

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

Not available

Not available

Multipoint with LDACiMany buds turn multipoint off on LDAC

Not available

Not available

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

Not available

Not available

Automatic switching between own devicesiThrough the maker's account

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20265Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Pages 33 and 35 automatic call switching and seamless connection. Account route is separate from concurrent generic multipoint.

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

10m1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Effective Bluetooth 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

1 of 3 differ

Low latency mode

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Page 36 Gaming mode in Labs requires Samsung Android device. No specific milliseconds stated.7Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026

Not available

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

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Compatibility

3 of 4 differ

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

Android, iOS, Windows, Other7Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026

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.

ASamsung Galaxy Buds2

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

Source7Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026Exact supported-model sections include Buds2. Android and iOS support calls and music. Windows PC pairing and Samsung TV and watch audio routes are documented. Other means compatible Samsung TV or Galaxy watch. PC/TV microphone support is unstated. No gaming console route inferred.

BTOZO A1

Not available

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

ASamsung Galaxy Buds2

Feature	Needs
Galaxy Wearable app	Android 7.0 or later and at least 1.5 GB RAM for original Buds2 app support. No iOS companion app support.
Samsung connection popup	Samsung Android 8.0 or later with SmartThings. This is not proof of Google Fast Pair or Microsoft Swift Pair.
Auto Switch	Galaxy phones or tablets with One UI 3.1 or later and same Samsung Account. Supported Galaxy Watch4 or later route. App and device support varies.
360 Audio and head tracking	Current earbud firmware and Samsung Galaxy phone or tablet with One UI 3.1 or later. App and content support varies. Added after launch.
Gaming mode	Galaxy Wearable Labs and compatible Samsung Android host. No numeric latency promise.
Galaxy AI translation	Paired compatible Samsung Galaxy phone processes Live Translate or Interpreter. Maker names S24 family as of February 2024. Account, software, language and network conditions apply.

Source2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20265Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20266Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026

BTOZO A1

Not available

Official licence

Not available

Not available

Battery and charging

11 of 13 differ

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

61mAh1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Maker typical capacity is 61 mAh per bud. Exact teardown cell is rated 58 mAh. These are different capacity scopes.3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026

40mAh1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Battery capacity: 40 mAh for the earphones. The case label in the product photo reads 40 mAh, 3.7 V, 0.148 Wh. Whether the figure is one earbud or the pair is not stated. NerdTechy says each earbud has a 40 mAh battery.

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.

ASamsung Galaxy Buds2

Mode	Includes case recharges	Hours (h)
ANC on	No	5
ANC on	Yes	20
ANC off	No	7.5
ANC off	Yes	29
Call	No	3.5
Call	Yes	13
Call	Yes	14

Source2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Five hours with ANC plus 15 additional hours from the case means 20 total, not 15 total. Preproduction Buds2 on a recently released Galaxy smartphone at default ANC-on settings. Exact host model, codec, volume and firmware are unstated.3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026Music 5/20 hours ANC on and 7.5/29 ANC off. Calls 3.5 hours per charge in both ANC states. Case-inclusive call totals are 13 with ANC and 14 without ANC. The call table mode does not encode ANC, so conditions are kept here.

BTOZO A1

Mode	Codec	Includes case recharges	Hours (h)
ANC off	AAC	No	7
ANC off	AAC	Yes	32

Source1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Music play time (AAC, default setting, 50% volume): 7 h on a single charge and 32 h with the charging case. An archived store page from 6 December 2023 gave 5.5 h and 22 h for the same hardware figures, so the claim changed over time. The current claim is 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.

7.5h=CalculatedFrom Claimed battery life

7h=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.

5h=CalculatedFrom Claimed battery life

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.

7.5h=CalculatedFrom Claimed battery life

7h=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.

29h=CalculatedFrom Claimed battery life

32h=CalculatedFrom Claimed battery life

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

20h=CalculatedFrom Claimed battery life

Not available

Talk time (claimed)

3.5h=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.

Not available

120min1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Cable charge time: 2 h for the earphones. The page does not say how the earbuds are charged, so the earbud time is read as charging in the 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.

Not available

Not available

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

5min3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026

Not available

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.

1h3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026One hour after five minutes of charging starts with earbuds below 30 percent. Original footnote explicitly measures playback with ANC off. Usage and recharge count affect duration. Codec, volume, host and firmware are unstated.

Not available

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.

472mAh1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Maker typical case-cell capacity is 472 mAh. Teardown also prints 472 mAh on the case battery label. Neither is USB output capacity.3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 202611Review52audio.com/archives/93500.htmlRead 5 October 2026Exact case cell EB-BR190ABY label: 472 mAh and 1.81 Wh at 3.85 V. Reviewer calls printed capacity rated while maker calls the same numeric case capacity typical. No conversion or USB output-capacity substitution.

400mAh1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Battery capacity: 400 mAh for the charging case.

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-C5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026

USB-C1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Charging port: USB Type-C.

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

Not available

120min1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Cable charge time: 2 h for the charging case.

Wireless charging

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026

Not available

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

Qi3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026

Not available

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

Not available

Not available

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

Not available

Not available

Screen on case

Not available

Not available

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

Not available

Not available

Controls

3 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.

Touch, Voice commands5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026

Touch1Maker product pagetozostore.com/products/a1Read 15 October 2026Feature heading: Smart Touch Control. The quick guide lists tap and tap-and-hold gestures on the earbuds.10Reviewnerdtechy.com/tozo-a1-reviewRead 15 October 2026Controls section: touch-activated controls on the exterior of each earbud.

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

Touch5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026

Touch10Reviewnerdtechy.com/tozo-a1-reviewRead 15 October 2026Controls section: touch-activated controls adjust the volume, skip or go back a track and play or pause through finger taps.

Gestures

Single, double and triple tap, Touch and hold, Double tap earbud edge in Labs5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20266Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026R177XXU0AUH2 dated August 24, 2021 adds double-tap earbud edge in Labs, ambient during calls and one-earbud noise control. Not copied from a Pro or FE guide.

Tap once on either earbud: play or pause, answer a call, Double tap the left earbud: previous track, Double tap the right earbud: next track, Hold the right earbud for 2 seconds: volume up, Hold the left earbud for 2 seconds: volume down, Hold either earbud for 2 seconds: hang up or reject a call, Triple tap either earbud: wake the voice assistant3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/index.htmlRead 21 October 2026Section 3.0 and 4.0. Hold means press and hold for 2 seconds. Tap once on L or R plays or pauses. Double tap L is previous and double tap R is next. Hold R raises and hold L lowers the volume. A call is answered with one tap and ended or rejected with a 2 second hold.

Remappable controls

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Pages 24 and 25 touch-and-hold can select noise control, Bixby or volume. Volume remaps both sides together. Page 29 repeats left down and right up.

Yes3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/index.htmlRead 21 October 2026Section 8.0: most of the controls can be customized in the TOZO app.

Voice assistant

Bixby5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Page 27 touch-and-hold or Hi Bixby on compatible Bixby-enabled host. Language and region availability vary.

Voice assistant3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/index.htmlRead 21 October 2026Section 5.0: triple-tap the earbud to wake the voice assistant with a beep. No assistant is named.

Sensors and health

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In-ear detection

Yes12Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Review says removal pauses playback but reinsertion does not automatically resume. User must tap. In-ear detection does not guarantee AirPods-like resume.

Not available

Sensors

Accelerometer, Gyroscope, Hall sensor, Proximity sensor, Touch sensor, Voice Pickup Unit1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

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.

Not available

Not available

Hearing protectioniLimits sudden loud sounds

Not available

Not available

Health features

Not available

Not available

Fit and durability

3 of 7 differ

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

S, M, L1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

Not available

Ear tip materials

Silicone2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

Silicone5Retailer pagebestbuy.com/product/tozo-a1-wireless-earbuds-bluetooth-5-3-lightweight-ipx5-2-mic-ai-calls-premium-sound-bass-32-eqs-charging-case-black/CZT87XXGG7Read 21 October 2026Maker account answer in the Q and A: the A1 set includes three spare silicone ear tips in three different sizes. The sizes are not named, so no ear tip sizes are stored.10Reviewnerdtechy.com/tozo-a1-reviewRead 15 October 2026Review: silicone ear tips. The maker answer on Best Buy also says silicone ear tips.

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

Not available

Not available

Ear tip fit test

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 20265Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026

Not available

Dust and water rating, buds

IPX212Reviewsoundguys.com/samsung-galaxy-buds-2-60669Read 5 October 2026Exact Buds2 earbuds IPX2. No charging-case IP rating inferred.

IPX51Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Water resistance - earphone: IPX5. No rating is stated for the case.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

4 of 6 differ

Companion app

Galaxy Wearable (Android) and Galaxy Buds (Windows)5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20268Maker product pagesamsung.com/us/support/answer/ANS10001316Read 5 October 2026Current exact eligibility includes Buds2 in Galaxy Buds PC app from Microsoft Store. Original Galaxy Wearable Android route and Windows route are distinct. Older Buds Manager for Mac belongs to different models.

TOZO app1Maker product pagetozostore.com/products/a1Read 15 October 2026The TOZO app has 32 preset EQs and access to over 2,000 personalized EQs shared by other users. No app platform list is stated on the page.

App platforms

Android, Windows5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20267Maker product pagesamsung.com/us/support/answer/ANS10001319Read 5 October 2026Buds2 is excluded from the iOS Buds app despite iPhone Bluetooth audio and call support.8Maker product pagesamsung.com/us/support/answer/ANS10001316Read 5 October 2026

iOS, Android3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/index.htmlRead 21 October 2026Section 9.0 shows the App Store and Google Play badges.

User firmware updates

Yes5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 20266Maker product pagedoc.samsungmobile.com/SM-R177/019815210824/eng.htmlRead 5 October 2026Exact SM-R177 firmware history lists releases through July 24, 2025. No future update promise, LC3 or Auracast feature inferred.8Maker product pagesamsung.com/us/support/answer/ANS10001316Read 5 October 2026Current manufacturer instructions explicitly update Buds2 through the Windows PC app. No iOS updater or future support promise.

Yes3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/index.htmlRead 21 October 2026Section 8.0: the earbuds firmware can be updated in the app.

Finding network

Samsung Find9Maker product pagesamsung.com/uk/apps/smartthings-findRead 5 October 2026Offline-finding list explicitly includes Buds2. Samsung Account, compatible Galaxy host and enabled offline finding required. Buds must have power. No UWB precision-finding capability inferred.

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Yes2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026Phone-processed Galaxy AI Live Translate and Interpreter. Current page names S24 family as of February 2024, account and language requirements. Live Translate requires network and Samsung Phone app.

Not available

Dimensions and weight

4 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.

5g(0.2 oz)1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

3.7g(0.1 oz)1Maker product pagetozostore.com/products/a1Read 15 October 2026Tech specs row Weight (each ear): 3.7 g plus or minus 0.2 g.

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

Width17Height20.9Depth21.1mm(0.7 × 0.8 × 0.8 in)1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Exact HxWxD labels retained. One earbud, not pair.

Not available

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

41.2g(1.5 oz)1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

Not available

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

Width50Height27.8Depth50.2mm(2 × 1.1 × 2 in)1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026Exact HxWxD labels retained. Case mass is empty-case mass, independently confirmed by teardown.

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.

Not available

Not available

Communication certifications

Not available

FCC Part 15, ISED licence-exempt RSS, CE RED 2014/53/EU, ANATEL 0034822131433Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/index.htmlRead 21 October 2026Sections 11.0 to 13.0: FCC Part 15 statement, ISED licence-exempt RSS statement and CE-DOC under Directive 2014/53/EU. No FCC ID is printed in the manual.4Retailer pageamazon.com/dp/B09N3RYJ66Read 21 October 2026Item details External Testing Certification: ANATEL 003482213143, model A1 (Brazil).

FCC IDs

Not available

2ASWH-A1-19E, 2ASWH-A1-AB6Regulatory filingfccid.io/2ASWH-A1-19ERead 21 October 2026Two FCC grants to Shenzhen Worgo Technology Limited (the TOZO maker, grantee code 2ASWH), both for trade mark TOZO, model A1: 2ASWH-A1-19E (granted 2026-06-02, light buds in the photos, Classic Bluetooth GFSK, pi/4 DQPSK and 8DPSK) and 2ASWH-A1-AB (filed 2026-06-04, black buds in the photos, same model and radio). The 19E filing photos show earbud cells labelled ST 501012, 3.7V, 0.15Wh, about 40 mAh, which fits the 40 mAh store figure. Grants for the 2021 and 2023 hardware were not found under this grantee, so these IDs describe the current A1 hardware only. The mapping of each ID to a colour is not stated.7Regulatory filingfccid.io/2ASWH-A1-ABRead 21 October 2026Second filing, ID 2ASWH-A1-AB, model A1, test report DLE-260424034R. Same note as the 2ASWH-A1-19E filing.

Other certifications

Not available

Not available

In the box

2 of 2 differ

In the box

Galaxy Buds2 earbuds, Charging case, Ear tips in S, M and L, Quick Start Guide, USB-C charging cable1Maker product pagesearchapi.samsung.com/v6/front/b2c/product/spec/detailRead 5 October 2026

TOZO A1 Mini wireless earbuds, Charging case, Silicone ear tips, USB-A to USB-C charging cable, User manual4Retailer pageamazon.com/dp/B09N3RYJ66Read 21 October 2026What is in the box: Charging Case, Eartip, TOZO A1 Mini Wireless Earbuds, USB-C (A to C) cable, User Manual. The cable length is printed as 20 cm here while TOZO prints 20 inches for its Open EarRing box, so no length is stored.10Reviewnerdtechy.com/tozo-a1-reviewRead 15 October 2026Review: a charging case, two earbuds, a USB-C charging cable and silicone tips. Amazon listing (the maker brand store) adds the user manual.

Cables included

ASamsung Galaxy Buds2

Type	Count
USB-C charging cable	1

Source5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Page 9 names supplied USB Type-C cable and separately sold chargers. Exact UK API lists one USB cable. Host-end connector and length are unstated, so CN teardown package details are not borrowed.

BTOZO A1

Type	Count
USB-A to USB-C	1

Source4Retailer pageamazon.com/dp/B09N3RYJ66Read 21 October 2026What is in the box: USB-C (A to C) cable. Length not stored because of the cm and inch mismatch noted under in_the_box.

Links

Not compared

Product page

www.samsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeua2Maker product pagesamsung.com/uk/business/audio-sound/galaxy-buds/galaxy-buds2-graphite-sm-r177nzkaeuaRead 5 October 2026

www.tozostore.com/products/a11Maker product pagetozostore.com/products/a1Read 15 October 2026TOZO official store page, titled TOZO A1 Mini Wireless Earbuds.

Spec sheet

www.samsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5g3Press releasesamsungmobilepress.com/articles/the-next-chapter-in-mobile-innovation-unfold-your-world-with-galaxy-z-fold3-5g-and-galaxy-z-flip3-5gRead 5 October 2026Original maker Product Specifications table read in full. No standalone model-specific maker PDF datasheet found.

Not available

Manual

org.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx5Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspxRead 5 October 2026Original EU English August 2021 Rev.1.0, 45-page PDF with numbered pages 1 to 44 and copyright page. Charging layout page 7 visually inspected. English section of the separately linked September 2021 Hearable Safety Information was also read. Generic safety text does not prove a model-specific FCC ID or IP rating.

s3-us.tozostore.com/tozo/pdfRenderer/web/index.html3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/index.htmlRead 21 October 2026Manual listed on the TOZO manuals page for the A1 (PDF created 2024-08-24, six languages). The text is outlined, so it was read from page images. The same gestures and app text appear in the A1 2024 manual that Amazon hosts.

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.

1year10Maker product pagesamsung.com/uk/support/warrantyRead 5 October 2026UK Galaxy Buds and wireless headphones category specifies 12 months. Statutory consumer rights and optional extended coverage are separate.

1year2Maker product pagetozostore.com/pages/warranty-policyRead 21 October 2026TOZO US warranty policy: one-year limited warranty against manufacturing defects from the date of purchase. The store banner says 12+6 months and the A1 quick guide offers an 18-month extended warranty when the product is registered within 14 days. The 12-month base term is stored.

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