Earbuds / Compare

JBL Tune Flex vs TOZO A1

A

Product A: JBL

Tune Flex

61 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

AJBL Tune Flex

BTOZO A1

General

4 of 8 differ

Series

Not available

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.

JBLTFLEXBLKAM, JBLTFLEXBLUAM, JBLTFLEXWHTAM3Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026Amazon US lists JBLTFLEXBLKAM for the Black model. Greentoe and Creative Audio list JBLTFLEXBLUAM and JBLTFLEXWHTAM.

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

050036397001, 050036397025, 0500363970183Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026UPC 050036397001 for Black on Amazon US. Greentoe lists 050036397025 for Blue and Creative Audio 050036397018 for White.5Retailer pagegreentoe.com/product/JBL_Jbl_Tune_Flex_True_Wireless_Noise-Cancelling_Earbuds__Blue__JBLTFLEXBLUAMRead 20 October 2026Blue UPC 050036397025. Greentoe also lists earphone and case dimensions with no axis names, which are not stored.6Retailer pagecreativeaudio.net/jbltflexwhtamRead 20 October 2026White UPC 050036397018. The box list names one open eartip, 3 sizes of sealing eartips and a QSG and safety sheet.

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.

Not available

Not available

Status

Available3Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026Amazon US sells the Black model and shows 14,754 ratings. Test-Achats says the earbuds are no longer on the market in Belgium.

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.

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.

JBL Tune Flex 210Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 23 October 2026The JBL support page for the Tune Flex 2 lists the JBL Tune Flex as its predecessor product.

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.

Not available

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, IN2Press releaseharman.com/india/pages/JBL-launches-JBL-Tune-Flex,-World%E2%80%99s-First-Transformable-TWS-Earbuds.aspxRead 20 October 2026Sold in India from 2022-09-06. The maker's Indian launch price was Rs.6,999.3Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026Amazon US and the US retailers list the US models JBLTFLEX..AM.7Reviewt3.com/reviews/jbl-tune-flex-reviewRead 20 October 2026T3 reviewed it in the UK at 90 pounds on 2022-10-04 and said it was not yet in the US or Australia.9Measurementtest-achats.be/hightech/casques-audio-et-ecouteurs/comparateur/jbl-tune-flex/278/88525Read 20 October 2026Test-Achats lists the Tune Flex for Belgium at 37.99 euro and says it is no longer on the market there.

Not available

ColoursiThe maker's own colour names

Black, Blue, White3Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026US listings sell Black, Blue and White. The Japanese launch also had a purple model and the Ghost Edition is a later colour finish that is not stored here.

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

Music8Reviewexpertreviews.co.uk/technology/headphones-audio/jbl-tune-flex-reviewRead 20 October 2026Review says JBL targets general-use true wireless buyers who exercise, commute and listen at home. No maker category names a sport or gaming line, so music is stored.

Not available

Design

1 of 4 differ

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

In-ear1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026JBL calls it Sound Fit, with open ear tips or sealing ear tips. Expert Reviews says the buds are open-ear by default. In-ear is stored because ANC and the three larger tips are the sealing form. This is a dual-form earbud.8Reviewexpertreviews.co.uk/technology/headphones-audio/jbl-tune-flex-reviewRead 20 October 2026Review says the buds are open-ear by default and become sealing buds with the included eartips.

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.

Stem3Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026Bullet text: 12mm drivers enhanced by the stick form factor.

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 bud1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Dual Connect + Sync page shows stereo mode with both earbuds and mono mode with either the left or the right earbud.

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

4 of 17 differ

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

AJBL Tune Flex

Type	Diameter (mm)	Count per earbud
Dynamic	12	1

Source1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Tech Spec: 12 mm / 0.472 inch dynamic driver.

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.

Dynamic1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026

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.

12mm=CalculatedFrom Drivers per bud

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.

1=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.

Min20 HzMax20 kHz1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Tech Spec: 20 Hz - 20 kHz. Greentoe adds that this is over wireless.

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

32Ω1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Tech Spec: 32 ohm. The same table prints sensitivity 108 dB SPL at 1 kHz with no electrical reference, so sensitivity is not stored.

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.

Not available

Not available

Volume limit

Not available

Not available

Spatial audio

None of 2 known

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

Not available

Not available

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

Not available

Not available

Noise cancelling

4 of 11 differ

Active noise cancelling

Yes1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 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.

Not available

Not available

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

22Press releaseharman.com/india/pages/JBL-launches-JBL-Tune-Flex,-World%E2%80%99s-First-Transformable-TWS-Earbuds.aspxRead 20 October 2026Features list Active Noise Cancelling (2-Mic) with Smart Ambient.

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.

62Press releaseharman.com/india/pages/JBL-launches-JBL-Tune-Flex,-World%E2%80%99s-First-Transformable-TWS-Earbuds.aspxRead 20 October 2026Six modes of ANC tuning for open or sealed ear tips. Expert Reviews calls them six separate levels of active noise cancellation.

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

Yes1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Ambient Aware and TalkThru in the Controls diagram.

Not available

Adjustable transparency

Not available

Not available

Automatic ANC and transparency blendiAutomatically blends active cancellation with ambient sound. Automatic activity-based switching between separate modes alone does not qualify.

Not available

Not available

Conversation detection

Not available

Not available

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

Not available

Not available

Measured

4 of 23 differ

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

Expert Reviews describes an EQ tuned for fun with an emphasis on bass, warm and energetic with bass-heavy genres. T3 found the sound more precise and punchy with the sealing tips than without them.7Reviewt3.com/reviews/jbl-tune-flex-reviewRead 20 October 2026T3 says the sound is much more precise and punchy with the sealing tips than with the open tips. Qualitative.8Reviewexpertreviews.co.uk/technology/headphones-audio/jbl-tune-flex-reviewRead 20 October 2026Review says the EQ is tuned for fun with a bass emphasis. Qualitative, no measurements.

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

Expert Reviews found crisp calls in most situations with no echo, tinniness or quietness. Test-Achats rates microphone intelligibility 5 stars without ambient noise and 4 stars with ambient noise. These are qualitative ratings.8Reviewexpertreviews.co.uk/technology/headphones-audio/jbl-tune-flex-reviewRead 20 October 2026Review says voice calls were crisp in most situations with none of the echo, tinniness or quietness of rivals. Qualitative.

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Bluetooth latency, worst (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

2.4 GHz latency, worst (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Latency in game mode (measured)iThe best case the buds can reach. Measured by a reviewer

Not available

Not available

Battery life (measured)iReviewer-tested operation from one full charge of the earbuds. Excludes case recharges. ANC, codec, connection, volume and tested edition belong in the row or source note.

AJBL Tune Flex

Hours (h)
5.55

Source9Measurementtest-achats.be/hightech/casques-audio-et-ecouteurs/comparateur/jbl-tune-flex/278/88525Read 20 October 2026Test-Achats lists measured battery life 333 min, stored as 5.55 h. ANC state, volume, codec and firmware are not stated on the page. It also lists 169 min after 15 minutes of charging and three recharges in the case.

BTOZO A1

Not available

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

5.55h=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

Not available

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

Not available

Not available

Microphones and calls

5 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.

42Press releaseharman.com/india/pages/JBL-launches-JBL-Tune-Flex,-World%E2%80%99s-First-Transformable-TWS-Earbuds.aspxRead 20 October 20264 microphones for crisp, clear calls.

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.

Not available

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.

Not available

Not available

Mic noise reduction

Not available

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.

Yes1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026The Controls diagram shows a microphone and muted microphone icon on a 2-second hold, next to the call icons.

Not available

SidetoneiHear your own voice in calls

Yes3Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026VoiceAware lets the user choose how much of their own voice is routed back into the earbuds.

Not available

Connectivity

6 of 18 differ

Chip

Not available

Not available

Connections

Bluetooth1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026

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

Bluetooth

5.21Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 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

Not available

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

Bluetooth profiles

A2DP V1.3, AVRCP V1.6, HFP V1.71Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 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.

No9Measurementtest-achats.be/hightech/casques-audio-et-ecouteurs/comparateur/jbl-tune-flex/278/88525Read 20 October 2026Test-Achats lists Bluetooth multipoint as Non and one device connected at a time. Overdrive Compara also lists no multipoint. JBL publishes no multipoint claim.

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

Not available

Not available

Fast pairing

Google Fast Pair1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Pairing page shows the Android 6.0+ prompt that ties the device to the Google Account.

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

None of 3 known

Low latency mode

Not available

Not available

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

Not available

Compatibility

1 of 4 differ

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

Android, iOS4Retailer pagegreentoe.com/product/JBL_Jbl_Tune_Flex_True_Wireless_Noise-Cancelling_Earbuds__Black__JBLTFLEXBLKAMRead 20 October 2026Greentoe lists the JBL Headphones app for Android and iOS. The Quick Start Guide names Siri and Google Assistant.

Not available

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

Not available

Not available

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

Not available

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.

55mAh1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Tech Spec: earbud lithium-ion polymer 55 mAh / 3.85 V. Rated or typical is not stated. Stored per earbud.

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.

AJBL Tune Flex

Mode	Includes case recharges	Hours (h)
ANC off	No	8
ANC off	Yes	32
ANC on	No	6
ANC on	Yes	24
Call	No	4.5

Source1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Tech Spec: music playtime with Bluetooth on and ANC off up to 8 hours, with ANC on up to 6 hours, talk time 4.5 hours. Test conditions and whether ANC is on for the talk time are not stated.2Press releaseharman.com/india/pages/JBL-launches-JBL-Tune-Flex,-World%E2%80%99s-First-Transformable-TWS-Earbuds.aspxRead 20 October 2026Up to 8H in the earbuds plus 24H in the case with ANC off, so 32 h with the case.3Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026Bullet text: 32 (8 plus 24) hours of battery life, or 6 hours plus 18 hours in the case with noise cancelling on. That gives 32 h and 24 h with the case.

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.

8h=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.

6h=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.

8h=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.

32h=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.

24h=CalculatedFrom Claimed battery life

Not available

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.

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.

The Quick Start Guide gives a charging time of under 2 hours from empty and does not say whether that is the earbuds or the case. Input is 5 V 1 A.1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Tech Spec: charging time under 2 hours from empty, power supply 5 V 1 A. The scope is not stated.

Not available

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

10min1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Charging diagram: 10 min = up to 2 hr of music. ANC, volume and codec are not stated.

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.

2h1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Earbud playback after 10 minutes of charging. Read from the Charging diagram.

Not available

Charging case

3 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.

570mAh1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Tech Spec: charging case lithium-ion polymer 570 mAh / 3.85 V.

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-C1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 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

No4Retailer pagegreentoe.com/product/JBL_Jbl_Tune_Flex_True_Wireless_Noise-Cancelling_Earbuds__Black__JBLTFLEXBLKAMRead 20 October 2026Greentoe key specs list wireless charging as None. T3 says the case does not support wireless charging.7Reviewt3.com/reviews/jbl-tune-flex-reviewRead 20 October 2026T3 says the case does not support wireless charging.

Not available

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.

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.

Touch1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 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.

Not available

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

Tap once on the left earbud: switch between ANC and Ambient Aware (needs the JBL Headphones app), Tap twice on the left earbud: TalkThru (needs the JBL Headphones app), Tap once on the right earbud: play or pause, Tap twice on the right earbud: next track, Tap three times on the right earbud: previous track, Tap twice on either earbud during a call: answer or end the call, Hold either earbud for 2 seconds during a call: mute or unmute the microphone, Hold either earbud for 2 seconds: voice assistant1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Read from the Controls diagram. Left earbud: tap once ANC and Ambient Aware, tap twice TalkThru. Right earbud: tap once play or pause, twice next, three times previous. Call answer and end on two taps, mute on a hold and the voice assistant on a hold. The ANC, Ambient Aware and TalkThru actions need the app.

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

Yes2Press releaseharman.com/india/pages/JBL-launches-JBL-Tune-Flex,-World%E2%80%99s-First-Transformable-TWS-Earbuds.aspxRead 20 October 2026Customisable all-access touch control through the JBL Headphones App.

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

Google Assistant, Bixby, Siri1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Controls diagram names Bixby / Siri / Others and an OK Google voice assistant. The assistant is enabled in the app and assigned to either earbud.2Press releaseharman.com/india/pages/JBL-launches-JBL-Tune-Flex,-World%E2%80%99s-First-Transformable-TWS-Earbuds.aspxRead 20 October 2026Hands-free voice control with Google Assistant.

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

None of 9 known

In-ear detection

Not available

Not available

Sensors

Not available

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.

XS (open ear tip), S, M, L1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026In the Box shows XS as open ear tips and S, M and L as sealing ear tips. Amazon US lists 3 sizes of eartips, Harman India lists three sizes of sealing ear tips.

Not available

Ear tip materials

Not available

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

Not available

Not available

Dust and water rating, buds

IPX43Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026IPX4 water resistance and sweat proofing.

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

2 of 6 differ

Companion app

JBL Headphones1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026

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, iOS1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Google Play and App Store badges.

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

Yes4Retailer pagegreentoe.com/product/JBL_Jbl_Tune_Flex_True_Wireless_Noise-Cancelling_Earbuds__Black__JBLTFLEXBLKAMRead 20 October 2026Greentoe lists the JBL Headphones app functions: adjust settings, firmware update, remote control and setup.

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

Not available

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Not available

Dimensions and weight

2 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.

4.8g(0.2 oz)1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Tech Spec: 4.8 g per piece, 9.6 g combined.

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.

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.

38.6g(1.4 oz)1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Tech Spec: charging case 38.6 g.

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.

Not available

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

Earbuds, Charging case, USB-C charging cable, Open ear tips (XS), Sealing ear tips (S, M, L), Quick start guide and safety sheet, Warranty sheet1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026In the Box diagram: earbuds, charging case, open ear tips, sealing ear tips, documents and a USB-A to USB-C cable.

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

AJBL Tune Flex

Not available

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

Not available

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

Spec sheet

Not available

Not available

Manual

www.easylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdf1Owner's manualeasylounge.com/cdn/shop/files/6932e5c53e6ebd9ef610f7116ad9c4d670b1512b_JBLTFLEXBC_01_guide_de_demarrage.pdfRead 20 October 2026Multilingual JBL Tune Flex Quick Start Guide as hosted by a retailer, because jbl.com is not read. It carries the Tech Spec table and the controls and charging diagrams.

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.

1year3Retailer pageamazon.com/dp/B0C1QNRGHCRead 20 October 2026Amazon US lists a 1 year manufacturer warranty. Greentoe says limited 1-year manufacturer warranty.

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.