Earbuds / Compare

CMF Buds 2 vs JBL Tune Flex 2

A

Product A: CMF

Buds 2

87 of 166 known

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B

Product B: JBL

Tune Flex 2

81 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

ACMF Buds 2

BJBL Tune Flex 2

General

6 of 8 differ

Series

Not available

Tune1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release names the range Tune Series 2. The series is stored as Tune, as on the other JBL Tune entries.

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

Not available

JBLTFLEX2BLKAM, JBLTFLEX2WHTAM, JBLTFLEX2TQEAM2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026US retailer page for the Black model. JBLTFLEX2BLKAM is also the Staples model number. The White model number is on the Staples page. The Turquoise number is on the Pana Compu page.

GTIN / EAN

6974434225053, 6974434225077, 69744342250392Maker product pagecheckout-us.nothing.tech/products/cmf-buds-2.jsRead 15 October 2026Maker store lists the SKU and the barcode with the same value for each colour. All three are valid EAN-13 numbers with prefix 697443. Light Green 6974434225053, Dark Grey 6974434225077, Orange 6974434225039.

050036405614, 0500364056212Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Black UPC 050036405614 on this page. White UPC 050036405621 from Datavision's store feed. Turquoise barcode not found.

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

28 April 20254Press articleandroidcentral.com/accessories/earbuds/cmf-buds-2-series-announced-globallyRead 15 October 2026Pre-orders started on 28 April 2025.

Not available

Status

Available1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Available5Retailer pagestaples.com/jbl-tune-flex-2-wireless-noise-canceling-earbuds-bluetooth-black-jbltflex2blkam/product_24634523Read 20 October 2026Staples lists the Black model JBLTFLEX2BLKAM at $109.95 with Add to cart on 2026-10-20. Datavision and Worldwide Stereo also list it.

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

Not available

JBL Tune Flex16Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 21 October 2026JBL support page: Predecessor Product: JBL Tune Flex. The page also says Manufactured from 2024 until now.

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

Not available

Not available

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

$595Press articletechradar.com/phones/nothing-phones/nothing-reveals-tempting-cmf-phone-2-pro-pricing-and-specs-alongside-bargain-wireless-earbudsRead 15 October 2026Launch report gives $59 for the CMF Buds 2. SoundGuys and GSMArena also give a $59 launch price. A pulled early store listing reportedly showed $59.99. The current store price of $49 is not a launch price.

$99.9517Maker product pageweb.archive.org/web/20250409230507/https://www.jbl.com/earbuds/TUNE-FLEX-2.htmlRead 21 October 2026Internet Archive capture of the JBL US store page on 2025-04-09, with the New badge: 99.95 USD for the Black model JBLTFLEX2BLKAM. Excludes tax. It is the earliest capture the archive holds, so the US launch price may predate it. JBL US now shows 59.95 USD on sale, struck from 109.95.

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.

€49.956Spec databasenextpit.de/in-ear-kopfhoerer/cmf-buds-2Read 15 October 2026German recommended retail price 49.95 EUR including VAT. inside-digital.de gives the same figure. Android Central rounds to 49 EUR. A pre-launch report also names 49.95 EUR.

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, DE6Spec databasenextpit.de/in-ear-kopfhoerer/cmf-buds-2Read 15 October 2026Maker store evidence for the US. nextpit gives May 2025 availability in Germany.

US, IN1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Harman India launch of the Tune Series 2. Prices were published in rupees. Sales started on JBL's website and in major retail stores.17Maker product pageweb.archive.org/web/20250409230507/https://www.jbl.com/earbuds/TUNE-FLEX-2.htmlRead 21 October 2026JBL US store lists the Black model JBLTFLEX2BLKAM in USD.

ColoursiThe maker's own colour names

Light Green, Dark Grey, Orange1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Black, White, Turquoise6Retailer pagedatavision.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-white.jsonRead 20 October 2026White model JBLTFLEX2WHTAM with UPC 050036405621. Black and White are sold in the US. JBL Canada and Euronics Ireland list Turquoise as the third colour, product code JBLTFLEX2TQE. Pana Compu lists the part number JBLTFLEX2TQEAM. India gets Black, Blue and White.

Segment

Music1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Music4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: Pure Bass sound for music, calls and movies. JBL files the Tune line as everyday listening.16Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 21 October 2026JBL support page, General Specifications: Activity Leisure. No sport or gaming line applies.

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-ear1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

In-ear4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: 2 Ear Tip Sound Modes. Open ear tips keep you aware of your surroundings. Three sizes of sealing tips seal off the world. The buds are dual-form. In-ear is stored because ANC and the three larger tips are the sealing form. The existing Tune Flex entry makes the same choice.

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

Stem1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Stem4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026The maker's product photo shows a stick on each bud. Harman describes it as an open-type stick design.

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

Not available

Either bud15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Dual Connect + Sync page shows stereo mode with both earbuds and mono mode with either the L or the R earbud.

RGB lighting

Not available

Not available

Drivers and sound

10 of 17 differ

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

ACMF Buds 2

Type	Diameter (mm)	Count per earbud
Dynamic	11	1

Source1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Custom 11 mm dynamic driver. One per bud. The acoustic role is not published.

BJBL Tune Flex 2

Type	Diameter (mm)	Count per earbud
Dynamic	12	1

Source1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Harman India release, published 2025-04-07: Tune Flex 2 is an open-type stick design with larger 12mm drivers. The driver count is not stated here.2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Technical Specifications copy of the JBL spec sheet: 12 mm / 0.47 inch dynamic driver. A single driver per bud is the reading of that line and of SoundGuys, which lists one driver.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: Driver size 12 mm / 0.47 in Dynamic Driver. One driver per earbud is the reading of the singular line.

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

Dynamic1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Dynamic1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release names 12mm drivers. The dynamic type comes from the spec sheet copy at Creative Audio.2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 202614Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: Dynamic Driver.

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

11mm=CalculatedFrom Drivers per bud

12mm=CalculatedFrom Drivers per bud

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

1=CalculatedFrom Drivers per bud

1=CalculatedFrom Drivers per bud

Diaphragm material

PMI (Polymethacrylimide) + PU (Polyurethane)1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Not available

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

Min20 HzMax20 kHz8Spec databasesoundguys.com/product/cmf-by-nothing-buds-2Read 15 October 2026SoundGuys spec list gives 20 to 20000 Hz. Smartprix gives the same range. Neither the maker page nor a document states it and no measurement condition is given.

Min20 HzMax20 kHz2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: 20 Hz - 20 kHz. No tolerance or conditions are given here.3Retailer pagestartech.com.bd/jbl-tune-flex-2-earbudsRead 20 October 2026Bangladesh retailer spec table repeats the JBL values: 20 Hz - 20 kHz, 13 ohms, 98 dB SPL@1 kHz.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: 20 Hz - 20 kHz. No conditions are stated.

Impedance

Not available

13Ω2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: 13 ohm.3Retailer pagestartech.com.bd/jbl-tune-flex-2-earbudsRead 20 October 202614Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: 13 ohm.

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

Not available

98dB7Retailer pageeuronics.ie/products/jbl-tune-flex-2-true-wireless-noise-cancelling-open-stick-earbuds-turquoise-jbltflex2tqeRead 20 October 2026Spec table: sensitivity 98 dB SPL @ 1 kHz, impedance 13 ohm, frequency response 20 Hz - 20 kHz, 6 microphones, IP54 earbuds only. The 1 mW reference comes from Hifiverse.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: Sensitivity 98 dB SPL@1 kHz. The JBL support page states it at 1 kHz and 1 mW.16Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 21 October 2026JBL support page, Audio Specifications: Driver sensitivity at 1kHz/1mW (dB) 98.

Sensitivity reference

Not available

Per 1 mW9Spec databasehifiverse.io/components/headphones-extra/headphones/tune-flex-2Read 20 October 2026Specifications table: sensitivity 98 dB SPL at 1 kHz / 1 mW, with 13 ohm impedance.16Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 21 October 2026JBL support page, Audio Specifications: Driver sensitivity at 1kHz/1mW (dB) 98.

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

No9Measurementm.gsmarena.com/nothing_cmf_buds_2_review-news-68160.phpRead 15 October 2026Review states the Buds 2 lack the Personal Sound feature of the Plus model.

Yes14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Features: Personi-Fi 3.0 shapes audio to a personal listening profile with tools that use information about you and your preferences. The hearing test method of Personi-Fi 3.0 is not described, so hearing_test is not stored.

Onboard EQ

Not available

Yes14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 202619Maker product pageplay.google.com/store/apps/detailsRead 21 October 2026Google Play listing of the JBL Headphones app by Harman Consumer, Inc.: TUNE FLEX 2 is a supported model, and EQ Settings gives predefined presets and custom settings. A Czech review says the Tune Flex 2 has six presets plus a custom curve. The preset names and the band count are not stated for this model.

Custom EQ bandsiNumber of independently adjustable custom equalizer frequency bands. Availability may require current firmware, an app or a compatible device.

37Measurementsoundguys.com/cmf-buds-2-review-137571Read 15 October 2026Three-band custom equalizer in the Nothing X app. GSMArena also describes a 3-band circular EQ.

Not available

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

Dirac Opteo, Pop, Rock, Classical, Electronic, Enhance Vocals7Measurementsoundguys.com/cmf-buds-2-review-137571Read 15 October 2026Reviewer lists Dirac Opteo, Pop, Rock, Electronic, Classical and a Vocals preset. Maker app name for the last one is Enhance Vocals per Expert Reviews. Custom is a separate option.

Not available

Volume limit

Not available

Not available

Spatial audio

1 of 2 differ

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

Spatial Audio Effect1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Spatial Audio Effect powered by an HRTF-based algorithm. Head tracking is not mentioned.

JBL Spatial Sound4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: JBL Spatial Sound transforms stereo sound from any source or device into a more immersive experience. No head tracking is stated.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026

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

5 of 11 differ

Active noise cancelling

Yes1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Yes1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release: Adaptive Noise Cancelling technology. How it adapts is not explained.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026

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

Hybrid1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Not available

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

Not available

Not available

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

Yes1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Environmental Adaptive mode adjusts noise reduction in real time to the surroundings.

Yes14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Features: Adaptive Noise Cancelling. The sheet does not say what it adapts to. The JBL support page lists the type as Adaptive Noise Canceling.16Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 21 October 2026General Specifications: Noise Cancelling Type Adaptive Noise Canceling.

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

311Reviewfonearena.com/blog/454376/cmf-buds-2-review.html/ampRead 15 October 2026Reviewer lists four noise control modes: Low, Mid, High and Adaptive. Three are fixed strength levels. Adaptive is separate.

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.

48dB1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Up to 48 dB. Footnote says this is a theoretical maximum from the Nothing laboratory. Cancellation frequency range is 5200 Hz.

Not available

Transparency mode

Yes1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Yes4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: Ambient Aware and TalkThru, part of Smart Ambient.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026

Adjustable transparency

Not available

Yes4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: Ambient Aware adapts how much of the outside world you want to hear. The app lets you tweak ambient sound control settings.

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.

Yes1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Wind Noise Reduction 3.0 is listed under call functions. It improves microphone clarity on calls.

Not available

Measured

4 of 23 differ

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

Default Dirac Opteo preset. About 5 to 9 dB more low-end than the SoundGuys house curve. About 3 to 4 dB under the curve between 3 and 6 kHz.7Measurementsoundguys.com/cmf-buds-2-review-137571Read 15 October 2026Firmware 1.0.128, five days of testing, company-provided unit. SoundGuys house curve. The reviewer also reports ANC attenuation peaking around 35 to 38 dB in some ranges. This is not stored as an overall figure.

Not available

Bass amount (measured)iDeviation from the review source target in the bass range. Positive means more bass. Target, test method and settings belong in the source note.

Not available

Not available

Treble amount (measured)iDeviation from the review source target in the treble range. Positive means more treble. Values from different targets may not be directly comparable.

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

SoundGuys describes good clarity and natural tonality in ideal conditions and effective wind noise reduction outdoors. Street conditions work better than a busy office, where ringing phones still come through.7Measurementsoundguys.com/cmf-buds-2-review-137571Read 15 October 2026Reviewer observations from published ideal, office, street, windy and reverberant demos. Firmware 1.0.128.

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.

ACMF Buds 2

ANC	Hours (h)
No	13.28

Source9Measurementm.gsmarena.com/nothing_cmf_buds_2_review-news-68160.phpRead 15 October 2026Reviewer got 13 hours 17 minutes of continuous use with ANC disabled. Volume, firmware and host are not stated. SoundGuys and FoneArena report about 9 hours in their own tests. Tom's Guide estimates about 12 hours. The reviews disagree.

BJBL Tune Flex 2

Not available

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

13.28h=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

4 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.

61Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Maker footnote says 3 HD microphones per bud, 6 in total.

44Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: two beamforming outer mics on each earbud pick up your voice. That is 4 voice microphones across the pair.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Features: two beamforming outer mics on each earbud pick up your voice, which is 4 voice microphones across the pair.

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 pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Maker lists 6 microphones in total. The split between call and ANC use is not published.

61Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release: six microphones.4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: 6 mics. Two beamforming outer mics and one inner mic on each earbud.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Features: two beamforming outer mics and one inner mic on each earbud, 6 in all. The marketing line says 6 mics.

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

AI1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Maker text calls Clear Voice Technology 3.0 AI-powered.

DSP4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: environmental noise cancellation and echo suppression algorithms. These are signal processing, not a named AI feature.

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.

No12Reviewyankodesign.comRead 15 October 2026Reviewer says muting the microphone with a tap gesture is not available.

Yes15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Controls page: microphone and crossed microphone icons on a 2 second hold, next to the call icons, on both earbuds.

SidetoneiHear your own voice in calls

Not available

Yes1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release: VoiceAware technology lets users stay aware of their surroundings and their own voice.

Connectivity

6 of 18 differ

Chip

Not available

Bestechnic BES2700IH20Regulatory filingfccid.io/APITUNEFLEX2Read 21 October 2026Read from the FCC internal photos exhibit: the main chip on both earbud boards is marked BES2700IH, a Bestechnic SoC. JBL names no chipset. The marking is read from a photo and the suffix may be misread.

Connections

Bluetooth1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Bluetooth1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release: Bluetooth 5.3 with LE Audio. No other connection is named.

Bluetooth

5.41Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

5.32Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 20263Retailer pagestartech.com.bd/jbl-tune-flex-2-earbudsRead 20 October 202614Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026

Bluetooth codecs

AAC, SBC1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Not available

Bluetooth profiles

Not available

A2DP, AVRCP, HFP2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: A2DP V1.4, AVRCP V1.6.2, HFP V1.8.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026

LE Audio

Not available

Yes1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release spec table: Bluetooth 5.3 with LE Audio. No codec is named.

Auracast

Not available

Not available

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

Yes1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Listed as Dual Connection: Yes.

Yes1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release: Multi-Point Connection.4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: Multi-Point Connection lets you switch from one Bluetooth device to another.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 202615Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Multi-point connection page: maximum 2 devices.

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

21Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Dual Connection is two simultaneous source devices.

210Spec databasetest-aankoop.be/hightech/koptelefoons-en-oortjes/vergelijker/jbl-tune-flex-2/278/116529Read 20 October 2026Spec list: Bluetooth multipoint yes, connects to 2 devices at once. The same list shows AAC as not supported, which conflicts with two German databases that list AAC and SBC, so codecs are not stored. The measured results are for members only and were not read.15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Multi-point connection page: maximum 2 devices.

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 Pair, Microsoft Swift Pair1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Google Fast Pair, Microsoft Swift Pair1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release: Multi-Point Connection and Google Fast Pair.4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 202614Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 202615Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Power on and connect page: Android devices linked to a Google account (Fast Pair, Android 6+) and Microsoft Swift Pair on Windows 10 v1803+.

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

10m1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Not available

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

2 of 3 differ

Low latency mode

Yes1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Yes14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Features, JBL headphones app: adapt the sound output to audio or video to get the most out of your content.16Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 21 October 2026FAQ Improving Lipsync Performance with App Compatible Headphones: switch the Smart Audio & Video setting to Video Mode.19Maker product pageplay.google.com/store/apps/detailsRead 21 October 2026Listing: Smart Audio & Video setting, available on specific models. The JBL FAQ says Video mode lowers latency by 100 ms. The Tune Flex 2 spec sheet says the app can adapt the sound output to audio or video.

Claimed latency

ACMF Buds 2

Connection	Mode	Latency (ms)
Bluetooth	Game Mode with a Nothing phone	110

Source1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Spec table says less than 110 ms with a Nothing phone in Game Mode. Footnote says as low as 110 ms. Stored as 110 ms.

BJBL Tune Flex 2

Not available

Lowest claimed latency

110ms=CalculatedFrom Claimed latency

Not available

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, iOS1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Android, iOS, Windows15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Power on and connect page: Android phones running 6+, Windows 10 v1803+ with Swift Pair, and others through the Bluetooth menu. The controls page names Siri.

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.

ACMF Buds 2

Platform	Connection
Android	Bluetooth
iOS	Bluetooth

Source1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

BJBL Tune Flex 2

Platform	Connection
Android	Bluetooth
iOS	Bluetooth
Windows	Bluetooth

Source15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Power on and connect page: Bluetooth pairing from the Bluetooth menu on Android, Windows and other devices. The microphone is not discussed per platform.

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

ACMF Buds 2

Feature	Needs
Custom controls and advanced settings	Turn on custom controls with a phone. Nothing OS 1.5.6 or later has the settings built in. Other Android 6.0 or later and iOS 13 or later devices use the Nothing X app.
110 ms Game Mode latency	Earbuds paired with a Nothing phone with Game Mode turned on.
Google Fast Pair	Supported Android device with Google Play services 11.7 or later. Android 6.0 or later. Find My and device renaming need Android 10 or later.
Clear Voice Technology 3.0	Applies only when the microphones record voice, such as on a call or a voice message.

Source1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

BJBL Tune Flex 2

Feature	Needs
Google Fast Pair	Android phones running Android 6 or later.
Microsoft Swift Pair	Windows 10 version 1803 or later.
ANC, Ambient Aware and TalkThru controls on the earbuds	Connect the earbuds to the JBL Headphones app to enable the advanced controls.
Ear Tip Sound Settings	Set in the JBL Headphones app.

Source15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Power on and connect page: Compatible with Android phones running 6+ and Windows 10 v1803+ for Swift Pair. Controls and how to wear pages: advanced controls and Ear Tip Sound Settings need the JBL Headphones app.

Official licence

Not available

Not available

Battery and charging

10 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.

53mAh1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Earbud capacity 53 mAh. Typical versus rated is not stated.

55mAh2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: earbud lithium-ion battery 55mAh / 3.85V. Rated capacity per earbud.3Retailer pagestartech.com.bd/jbl-tune-flex-2-earbudsRead 20 October 2026Spec table: earbud 55mAh / 3.85V and case 545mAh / 3.85V.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: Earbud battery type Lithium-ion battery (55mAh / 3.85V).

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.

ACMF Buds 2

Mode	Codec	Includes case recharges	Hours (h)
ANC off	AAC	No	13.5
ANC off	AAC	Yes	55
ANC on	Not available	No	7.5
ANC on	Not available	Yes	32
Call	Not available	No	8.5
Call	Not available	Yes	35
Call	Not available	No	7
Call	Not available	Yes	30

Source1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Maker playback and talk time tables. Lab test at 25 C. The 55 hour footnote states ANC off, 50% volume, AAC and other settings at default. The ANC on and call rows state no codec. Call rows 8.5 and 35 hours are ANC off. Call rows 7 and 30 hours are ANC on. The call mode cannot encode ANC, so these conditions stay here. Case totals include the initial earbud charge.

BJBL Tune Flex 2

Mode	Includes case recharges	Hours (h)
ANC on	No	8
ANC off	No	12
ANC on	Yes	32
ANC off	Yes	48
Call	No	5

Source1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release table for Flex 2: 48 hours playback, 8+24H with ANC on and 12+36H with ANC off. The first number is the earbuds and the second is the case. The totals of 32 h and 48 h are the sums. Spec sheet copy at Creative Audio: up to 12 hours with ANC off, up to 8 hours with ANC on and talk time up to 5 hours with ANC off and 4.5 hours with ANC on. Only the 5 hour call figure is stored. No codec or volume is stated.2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: music playtime with BT on up to 12 hours with ANC off and up to 8 hours with ANC on. Talk time up to 5 hours with ANC off and up to 4.5 hours with ANC on. The 5 hour figure is stored as the call row.3Retailer pagestartech.com.bd/jbl-tune-flex-2-earbudsRead 20 October 2026Spec table: ANC off 12 h, ANC on 8 h, talk time ANC off up to 5 h and ANC on up to 4.5 h.4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: up to 8 hours of playtime plus three full charges (24 hours) in the case with ANC on, or up to 12 hours plus 36 hours with ANC off. Up to 48 hours total.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: music playtime with BT on up to 12 hrs with ANC off and up to 8 hrs with ANC on. Talk time up to 5 hrs with ANC off and up to 4.5 hrs with ANC on. Features: 8 hours plus three more charges (24 hours) in the case with ANC on, or 12 hours plus 36 hours with ANC off. No codec or volume is stated.

Longest claimed use per chargeiHighest earbuds-only runtime among all stored modes. This can be ANC off, Hearing Aid, heart-rate or call use. Read the battery table and source conditions.

13.5h=CalculatedFrom Claimed battery life

12h=CalculatedFrom Claimed battery life

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

7.5h=CalculatedFrom Claimed battery life

8h=CalculatedFrom Claimed battery life

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

13.5h=CalculatedFrom Claimed battery life

12h=CalculatedFrom Claimed battery life

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

55h=CalculatedFrom Claimed battery life

48h=CalculatedFrom Claimed battery life

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

32h=CalculatedFrom Claimed battery life

32h=CalculatedFrom Claimed battery life

Talk time (claimed)

8.5h=CalculatedFrom Claimed battery life

5h=CalculatedFrom Claimed battery life

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

62min1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Maker table row Earbuds in Case, 62 minutes.

Not available

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

The maker charging time table lists Full Charge 93 minutes and Earbuds in Case 62 minutes. It does not say whether the earbuds sit inside the case for the 93 minute figure. A 5 V 1 A adapter or higher is needed for fast charging.1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

The spec sheet lists a charging time of 2 hours from empty and does not say whether this covers the earbuds, the case or both.2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: charging time 2 hrs from empty. No scope is given.

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

10min1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Maker Fast charging row for the Type-C cable states a 10 minute charge. The row label says Full charge, but the marketing text and the GSMArena test both describe a 10 minute charge.

10min15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Charging page: icon row 10 MIN charging = 3 H of music with the earbuds in the case.

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.

4h1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Earbuds-only 4 hours after a 10 minute wired charge. Playback with the case is 7.5 hours and is excluded. Charging from an unplugged case for 10 minutes gives 2.4 hours earbuds-only and 4 hours with the case. ANC, codec and volume are not stated for this claim.

3h15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Charging page: 10 MIN = 3 H of music playback. ANC, volume and codec are not stated. The JBL support page features list Speed charge: Yes.

Charging case

2 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.

460mAh1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Case capacity 460 mAh. Typical versus rated is not stated.

545mAh2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: charging case lithium-ion battery 545mAh / 3.85V. Rated capacity.3Retailer pagestartech.com.bd/jbl-tune-flex-2-earbudsRead 20 October 202614Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: Charging case battery type Lithium-ion battery (545mAh / 3.85V).

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-C1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

USB-C2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026The box lists a Type-C USB charging cable. The spec sheet lists a 5V 1A power supply.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026The box holds a Type-C USB charging cable. The quick start guide shows the cable plugged into the case.

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

Not available

120min15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Charging page: the case on a USB cable, battery empty to full, 2 H. The tech spec text says Charging time: 2 hrs from empty. It does not say whether the earbuds are in the case.

Wireless charging

No7Measurementsoundguys.com/cmf-buds-2-review-137571Read 15 October 2026Review says there is no wireless charging support. The maker lists none.

No2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Not listed on the spec sheet copy. Euronics Estonia states no wireless charging.8Retailer pageeuronics.ee/en/audio/headphones/wireless-headphones/jbltflex2wht/jbl-tune-flex-2-white-true-wireless-earbudsRead 20 October 2026Spec table: no wireless charging. The same table says no fast charging, which conflicts with SoundGuys, The maker's quick start guide shows 10 min = 3 h, so quick charge is stored from the maker.

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.

Touch1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Touch4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: all managed using intuitive touch controls.

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

Touch1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Footnote lists volume up and volume down as assignable touch functions.

Not available

Gestures

Double tap, Triple tap, Tap and hold, Double tap and hold1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Footnote lists double tap, triple tap, tap and hold, and double tap and hold as assignable. Defaults are in the touch controls table.

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 three times, then hold, on the right earbud: Ear Tip Sound Settings, 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 assistant, Tap once, then hold for 5 seconds, on either earbud: multi-point connection15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Controls page (page 9), read from the icon rows and the tap legend. Footnote: enable advanced controls by connecting the earbuds to the JBL Headphones app. The advanced controls are ANC, Ambient Aware and TalkThru. Ear Tip Sound Settings is the triple tap plus hold row. The multi-point row is on page 8.

Remappable controls

Yes1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Yes1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release: Personi-Fi 3.0 with gesture controls through the JBL Headphones app.4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: the app lets you change how the earbuds behave through gesture customization.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026

Voice assistant

Voice assistant1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Footnote lists voice assistant as an assignable function. No particular assistant brand is named in the specs.

Bixby, Siri15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026Controls page: Bixby / Siri / Others on a 2 second hold. Others is not named.

Sensors and health

2 of 9 differ

In-ear detection

Yes1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Listed as In-ear detection.

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.

No9Measurementm.gsmarena.com/nothing_cmf_buds_2_review-news-68160.phpRead 15 October 2026Personal Sound plays tones for a hearing based profile. The review says the Buds 2 do not have it.

Not available

Hearing protectioniLimits sudden loud sounds

Not available

Not available

Health features

Not available

Not available

Fit and durability

5 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 pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026In-the-box list names S, M and L tips.

S, M, L, Open ear tip (1 size)2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Box list: 3 sizes of ear tips and 1 size of open ear tips. SoundGuys lists the sealing sizes as S, M and L.4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: open ear tips plus three sizes of sealing ear tip.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026

Ear tip materials

Silicone10Reviewexpertreviews.co.uk/technology/headphones-audio/cmf-buds-2-reviewRead 15 October 2026Review says the box holds silicone ear tips in several sizes. SoundGuys also says silicone.

Not available

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

Not available

Not available

Ear tip fit test

Yes11Reviewfonearena.com/blog/454376/cmf-buds-2-review.html/ampRead 15 October 2026The Nothing X app has an earbuds fit test that plays music to check the seal.

Not available

Dust and water rating, buds

IP551Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Earbuds tested to IP55 under IEC 60529 per footnote.

IP541Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release: IP54 water and dust resistant earbuds.2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: IP54. The maker copy at Worldwide Stereo says earbuds only.4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: IP54 water and dust resistant, earbuds only.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026

Dust and water rating, case

IPX21Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Spec list shows IPX2 for the case. Footnote says the case is not rated for water-proofing.

Not available

Water resistance depth

Not available

Not available

Software

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Companion app

Nothing X1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

JBL Headphones1Press releaseharman.com/india/pages/JBL-Launches-Tune-Series-2-in-India--Redefining-Personal-Audio.aspxRead 20 October 2026Release: customisation through the JBL Headphones app.4Retailer pageworldwidestereo.com/products/jbl-tune-flex-2-noise-cancelling-true-wireless-headphones-blackRead 20 October 2026JBL copy: the free JBL Headphones app adjusts the ANC level, ambient sound control and gesture customization.

App platforms

Android, iOS1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

Android, iOS11Spec databasesoundguys.com/product/jbl-tune-flex-2Read 20 October 2026Spec list: app for iOS and Android. The page shows no lab test and no test method.19Maker product pageplay.google.com/store/apps/detailsRead 21 October 2026Google Play listing names TUNE FLEX 2 as a supported model.

User firmware updates

Yes1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Nothing X app lists software updates.

Yes16Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 21 October 2026JBL support page lists Tune Flex 2 software update release notes: 2.2.0 on 2024-11-11 up to 3.5.0 on 2026-07-07. The earbuds are updated through the JBL Headphones app.

Finding network

Not available

Last location in the app14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Features, JBL headphones app: check your best fit, or find your earbuds. Location detail is on the JBL app page.19Maker product pageplay.google.com/store/apps/detailsRead 21 October 2026JBL spec sheet says the app can find your earbuds. The JBL app page describes Find My Buds as a notification of the last known location and time, plus a ring. It works over Bluetooth, not GPS.

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

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.

4.5g(0.2 oz)1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

4.4g(0.2 oz)2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: earbud 4.4 g per piece. The Ghost edition earbud is listed at 4.2 g and is not this product.3Retailer pagestartech.com.bd/jbl-tune-flex-2-earbudsRead 20 October 2026Spec table: earbud 4.4 g, charging case 32.9 g.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: Earbud 4.4 g per pc (8.8 g combined). The Ghost edition earbud is 4.2 g and is not this product.16Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 21 October 2026JBL support page, Dimensions: Earpiece Weight (g) 4.4. The page also lists total Weight (g) 41.7 and Charging Case Weight (g) 32.9.

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

Width20.6Height33.4Depth22.8mm(0.8 × 1.3 × 0.9 in)1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Maker lists Height 33.4 mm, Width 20.6 mm, Depth 22.8 mm for the buds.

Width20.32Height34.63Depth19.59mm(0.8 × 1.4 × 0.8 in)14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: Earbuds dimensions (l x w x d) 34,63 x 20,32 x 19,59 mm. Width and depth are stored as labelled. The length is the stem axis and is stored as height, the remaining axis.

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

41.5g(1.5 oz)1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Maker case weight 41.5 g. The buds are not included in this figure.

32.9g(1.2 oz)2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026Spec sheet copy: charging case 32.9 g. The Ghost edition case is listed at 35.2 g. Euronics Estonia lists 35.2 g for the White model, which conflicts with the 32.9 g of the spec sheet.3Retailer pagestartech.com.bd/jbl-tune-flex-2-earbudsRead 20 October 202614Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: Charging case 32.9 g. The Ghost edition case is 35.2 g, which explains the Euronics Estonia figure.16Maker product pagesupport.jbl.com/all-headphones/TUNE-FLEX-2.htmlRead 21 October 2026JBL support page, Dimensions: Charging Case Weight (g) 32.9.

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

Width53.3Height53.3Depth23mm(2.1 × 2.1 × 0.9 in)1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Maker lists Height 53.3 mm, Width 53.3 mm, Depth 23 mm for the case.

Width47Height51.43Depth29.14mm(1.9 × 2 × 1.1 in)14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026Technical Specifications: Charging case dimensions (l x w x d) 51,43 x 47 x 29,14 mm. Width and depth are stored as labelled. The length is stored as height, the remaining axis. A Czech review repeats the same figures.

Certifications

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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 15C, ISED Canada IC 6132A-TUNEFLEX220Regulatory filingfccid.io/APITUNEFLEX2Read 21 October 2026Test report: FCC Part 15 Subpart C and ISED RSS-247 for TUNE FLEX 2. IC 6132A-TUNEFLEX2.

FCC IDs

Not available

APITUNEFLEX220Regulatory filingfccid.io/APITUNEFLEX2Read 21 October 2026FCC grant APITUNEFLEX2 to Harman International Industries, application date 2024-07-22, Bluetooth BR/EDR/LE. The test report DDT-RE24052314-1E01 (issued 2024-06-29) names the model TUNE FLEX 2 and a built-in 3.85 V lithium-ion battery in the case and in the earbuds.

Other certifications

EU RoHS, REACH1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026Footnote states restricted substance tests including EU RoHS and REACH, plus skin irritation and sensitivity tests.

Not available

In the box

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In the box

Pair of earbuds, Charging case, Ear tips in size S, M, L, User guide, Safety information and warranty information1Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

JBL Tune Flex 2 earbuds, Charging case, Type-C USB charging cable, Ear tips in 3 sizes, Open ear tips in 1 size, Warranty card, Quick start guide and safety sheet2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 2026What's in the Box list.14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026What's in the Box: earbuds, Type-C USB charging cable, 3 sizes of ear tips, 1 size of open ear tips, charging case, warranty card and quick start guide with safety sheet.

Cables included

ACMF Buds 2

Not available

BJBL Tune Flex 2

Type	Count
USB-C charging cable	1

Source2Retailer pagecreativeaudio.net/tune-flex-2-bRead 20 October 20261 x Type-C USB charging cable. The length is not stated.

Links

Not compared

Product page

us.nothing.tech/products/cmf-buds-21Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026

www.jbl.com/TUNE-FLEX-2.html13Maker product pagejbl.com/TUNE-FLEX-2.htmlRead 21 October 2026JBL US product page of the Tune Flex 2. Opened on 2026-10-21. It lists a sale price of 59.95 USD.

Spec sheet

us.nothing.tech/products/cmf-buds-21Maker product pageus.nothing.tech/products/cmf-buds-2Read 15 October 2026The public product page embeds the full Technical Specs tables. The same tables appear on the India page. Selected reference is the US store listing.

support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdf14Maker spec sheet (PDF)support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw64aa6671/pdfs/JBL_TUNE_FLEX_2_Specsheet_EN.pdfRead 21 October 2026JBL English spec sheet, 2 pages, linked from the JBL support page.

Manual

Not available

support.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdf15Owner's manualsupport.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwf8af14f6/pdfs/LS_JBL_Tune%20Flex%202_QSG_Multilingual.pdfRead 21 October 2026JBL multilingual quick start guide, 39 pages. The English pages are the first 13.

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.

1year3Maker product pageus.nothing.tech/pages/terms-of-salesRead 15 October 2026US direct-store limited warranty for headphones and other electronic devices is twelve months from delivery. It applies to the US store, not worldwide.

1year18Maker product pagesupport.jbl.com/howto/jbl-warranty-information-us/000028546.htmlRead 21 October 2026JBL US warranty page: Headphones one year. Valid for products bought from authorized US resellers and used in the US. The page says coverage can differ by model and refers to the warranty card in the box, which was not read.

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