Earbuds / Compare

Bose Ultra Open Earbuds (2nd Gen) vs Shokz OpenFit Air 2

A

Product A: Bose

Ultra Open Earbuds (2nd Gen)

71 of 166 known

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B

Product B: Shokz

OpenFit Air 2

68 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

ABose Ultra Open Earbuds (2nd Gen)

BShokz OpenFit Air 2

General

7 of 8 differ

Series

Not available

OpenFit16Press articleitwire.com/your-it-news/home-it/shokz-introduces-openrun-air-2-and-openfit-air-2-expanding-its-bone-conduction-and-open-ear-true-wireless-lineupsRead 14 October 2026iTWire repost of the Shokz press release, 2026-08-28: the lightest product in the OpenFit family.

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

897806-0010, 444638, 638L, 638R3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026US Black SKU from exact retailer source also cited below. Original multilingual guide regulatory printed pages 4 and 7: case 444638, left 638L, right 638R.4Retailer pagebhphotovideo.com/c/product/2001094-REG/bose_897806_0010_ultra_open_true_wireless.htmlRead 8 October 2026Exact US Black retailer listing MFR 897806-0010. Regulatory 444638/638L/638R are separately proved by the original manufacturer guide.

T520, T520-ST-BK-US, T520-ST-IB-US, T520-ST-WT-US, T520BK, T520IB, T520WT, T520-ST-BK-CA-326, T520-ST-IB-CA-326, T520-ST-WT-CA-3261Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026US store variant SKUs T520-ST-BK-US Black, T520-ST-IB-US Ice Blue and T520-ST-WT-US White, from the store's product data. The store showed Sold out on 2026-10-14.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Australian store SKUs T520BK, T520IB and T520WT. The UK and German stores use the same SKUs.5Maker product pagede.shokz.com/products/openfit-air-2Read 14 October 2026German store SKUs T520BK, T520IB and T520WT.6Maker product pageca.shokz.com/products/openfit-air-2Read 14 October 2026Canadian store SKUs T520-ST-BK-CA-326, T520-ST-WT-CA-326 and T520-ST-IB-CA-326.

GTIN / EAN

0178178627144Retailer pagebhphotovideo.com/c/product/2001094-REG/bose_897806_0010_ultra_open_true_wireless.htmlRead 8 October 2026Exact US Black MFR 897806-0010 UPC 017817862714.

8102026894591Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026The store data has no barcodes. The White US barcode is from the Abt listing below.15Retailer pageabt.com/Shokz-OpenFit-Air-2-Open-Ear-Wireless-Earbuds-in-White-T520STWTUS/p/247381.htmlRead 14 October 2026Abt lists UPC 0810202689459 for model T520-ST-WT-US, White.

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

17 September 20262Press releasebose.com/pressroom/bose-sport-open-earbuds-and-bose-ultra-open-earbuds-2nd-genRead 8 October 2026September 17, 2026 announcement. US availability October 1, 2026, preorders September 19. Release date follows primary rather than SoundGuys October 2 metadata.

24 August 20268Press articlesoundguys.com/shokz-openfit-air-2-launch-161931Read 14 October 2026Article dated 2026-08-24 and based on the Shokz press release.10Reviewkopfhoerer.de/test/shokz-openfit-air-2Read 14 October 2026Page last updated 2026-08-24.

Status

Available1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

Available8Press articlesoundguys.com/shokz-openfit-air-2-launch-161931Read 14 October 2026On sale from 2026-08-27 in the US.

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

Bose Ultra Open Earbuds2Press releasebose.com/pressroom/bose-sport-open-earbuds-and-bose-ultra-open-earbuds-2nd-genRead 8 October 2026Bose's September 2026 release calls the Ultra Open Earbuds (2nd Gen) the next generation and compares them with the first-generation model.

Not available

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

Not available

Not available

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

$2992Press releasebose.com/pressroom/bose-sport-open-earbuds-and-bose-ultra-open-earbuds-2nd-genRead 8 October 2026US $299 launch price for Ultra Open Earbuds 2nd Gen. Sport Open $199 is a separate model.

$129.951Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026US store regular price 129.95 USD, the same as the announced price.8Press articlesoundguys.com/shokz-openfit-air-2-launch-161931Read 14 October 2026MSRP 129.95 USD, US.

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.

€299.956Maker product pagebose.de/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 10 October 2026Bose Germany store showed 299,95 EUR incl. VAT on 2026-10-10 with no strike-through or discount, nine days after the October 1 release. Bose France showed the same 299.95 EUR. Neither page labels the figure as a launch price. It is read as the launch list price because the product is days old. The first-generation model sits at 349,95 EUR on the same page.

€1395Maker product pagede.shokz.com/products/openfit-air-2Read 14 October 2026German maker store price 139.00 EUR including VAT. The store page was created 2026-08-03 and published 2026-08-24.10Reviewkopfhoerer.de/test/shokz-openfit-air-2Read 14 October 2026Review: unchanged list price of 139 euros.14Reviewt3.com/tech/earbuds/shokz-openfit-air-2-reviewRead 14 October 2026T3 gives 129 GBP, 129.95 USD and 139 EUR in the EU.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

US, CA, GB, DE, AU, JP1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026US store. Canada, UK, Germany and Australia are from their own stores below.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Australian maker store lists it at 219 AUD.5Maker product pagede.shokz.com/products/openfit-air-2Read 14 October 2026German maker store.6Maker product pageca.shokz.com/products/openfit-air-2Read 14 October 2026Canadian maker store lists it at 169.95 CAD.7Maker product pageuk.shokz.com/products/openfit-air-2Read 14 October 2026UK maker store lists it at 129 GBP.9Press articleav.watch.impress.co.jp/docs/news/2140693.htmlRead 14 October 2026Japan launch on 2026-09-16 at 19,880 yen including tax.

ColoursiThe maker's own colour names

Black, White Smoke, Cherry Chocolate, Olive Green, Sky Pink1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026Exact US model family. Last three colors are limited editions. Reference is US Black 897806-0010.

Black, Ice Blue, White1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026Black, Ice Blue and White as named in the US store.5Maker product pagede.shokz.com/products/openfit-air-2Read 14 October 2026German store colour titles translated: Schwarz is Black and Weiss is White.

Segment

Not available

Sport1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026Listed under Workout and Lifestyle Earbuds. Press calls it a fitness-focused earbud.

Design

1 of 4 differ

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

Open-ear1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

Open-ear1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026Open-ear design. The speaker rests above the ear.

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

Ear cuff1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

Ear hook1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026Earhook earbuds.

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

Either bud1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

Either bud4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026Single Earbud Controls: both earbuds can be used independently for mono playback or calls.

RGB lighting

Not available

Not available

Drivers and sound

6 of 17 differ

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

ABose Ultra Open Earbuds (2nd Gen)

Type	Count per earbud
Dynamic	1

Source4Retailer pagebhphotovideo.com/c/product/2001094-REG/bose_897806_0010_ultra_open_true_wireless.htmlRead 8 October 2026Exact model specifications explicitly list Dynamic and 1 per Earpiece. Acoustic role and diameter not published. No transfer from first generation or separate Sport Open model.

BShokz OpenFit Air 2

Type	Diameter (mm)	Count per earbud
Dynamic	11.8	2

Source2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Footnote: the Bassphere driver has two high-sensitivity 11.8 mm round speakers, comparable to a 16 mm round speaker. Per earbud.

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

Dynamic4Retailer pagebhphotovideo.com/c/product/2001094-REG/bose_897806_0010_ultra_open_true_wireless.htmlRead 8 October 2026Exact retailer Dynamic entry. Source microphone 4, NFC, touch-sensor and supplied-cable claims contradict stronger primary documents and are not used.

Dynamic9Press articleav.watch.impress.co.jp/docs/news/2140693.htmlRead 14 October 2026Bassphere places two dynamic drivers facing each other.

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

Not available

11.8mm=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

2=CalculatedFrom Drivers per bud

Diaphragm material

Not available

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

Not available

Min20 HzMax20 kHz3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Speaker frequency response 20 to 20 kHz, plus or minus 10 dB. Speaker sensitivity 97.5 dB plus or minus 3 dB at 0.5 Vrms, 1 cm on baffle, so it is not stored. Sensitivity reference is neither 1 mW nor 1 V.

Impedance

Not available

Not available

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

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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

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

Not available

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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.

33Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 19 explicitly lists bass, midrange and treble adjustment in Bose app. At high volumes adjustments may be reduced to avoid distortion.

510Reviewkopfhoerer.de/test/shokz-openfit-air-2Read 14 October 2026Review: five-band equalizer with four presets and two user-defined settings.11Reviewexpertreviews.co.uk/technology/headphones-audio/shokz-openfit-air-2-reviewRead 14 October 2026Review: five-band graphic equaliser in the Shokz app.

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

Bass Boost, Treble Reducer5Reviewsoundguys.com/bose-ultra-open-earbuds-2nd-gen-review-164060Read 8 October 2026Review names Bass Boost and Treble Reducer as examples. Stored list only contains these proven names, not an inferred complete preset inventory.

Standard, Vocal, Bass, Private2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 20264 preset EQ modes: Standard, Vocal, Bass, Private, plus 2 custom modes.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026EQ Adjustments page: Standard, Vocal, Bass and Private.

Volume limit

Not available

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Spatial audio

2 of 2 differ

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

Bose Immersive Audio, Cinema Mode with Bose TrueSpatial2Press releasebose.com/pressroom/bose-sport-open-earbuds-and-bose-ultra-open-earbuds-2nd-genRead 8 October 2026Launch paragraph specifically names Cinema Mode powered by Bose TrueSpatial, spatializing video/podcasts with centered dialogue. Manual separately proves Bose Immersive Audio and its Still/Motion settings.3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed pages 21 to 24 Immersive Audio Off/Still/Motion and Stereo/Immersion/Cinema listening modes. Cinema uses Still plus video spatialization. Current maker/launch names Cinema TrueSpatial.

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.

Yes3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 21 Still holds virtual speakers in position while head moves, then recenters after stopping. Motion setting follows the user. No source-specific spatial content required.

Not available

Noise cancelling

0 of 11 differ

Active noise cancelling

No1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

No3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Maker FAQ on the page: the OpenFit Air 2 does not feature active noise cancellation.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Transparency mode

Not available

Not available

Adjustable transparency

Not available

Not available

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

Not available

Not available

Conversation detection

Not available

Not available

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

Not available

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Measured

5 of 23 differ

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

Bass extends lower than the first generation but remains below the review preference curve below about 80 Hz. Treble is less harsh than the original. The review reports bass distortion at higher listening volumes.5Reviewsoundguys.com/bose-ultra-open-earbuds-2nd-gen-review-164060Read 8 October 2026Exact review objective measurements compare with the SoundGuys headphone preference curve. No numeric target deviations or graph-derived values stored.

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

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

Not available

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

Not available

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

Not available

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

Artificial test-head recordings have clear voice in quiet conditions. Office and street noise suppression also removes much of the voice, leaving it muffled. The windy sample contains almost no audible speech. The non-vibrating test head cannot activate the voice pickup units as a real person would, so real calls may differ.5Reviewsoundguys.com/bose-ultra-open-earbuds-2nd-gen-review-164060Read 8 October 2026Exact review quiet, office, street and windy recordings use an artificial test head that does not vibrate like a real human head. The voice pickup units cannot work as they do on a real person, so actual calls may differ. These sample results cannot establish complete real-person VPU-assisted call performance.

Not available

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

Not available

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

Not available

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

Not available

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

Not available

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

Not available

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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

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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.

ABose Ultra Open Earbuds (2nd Gen)

ANC	Hours (h)
No	13.02

Source5Reviewsoundguys.com/bose-ultra-open-earbuds-2nd-gen-review-164060Read 8 October 2026One-week review of maker-supplied exact 2nd Gen Cherry Chocolate 897806-0030. Reported standardized battery test 13 h 1 min converted to 13.0167 h. ANC absent. Review frames this as standard playback before reduction with Immersive Audio/AutoVolume, but does not explicitly state those test flags, codec, firmware, source or level. These remain unknown. Header 10 g and October 2 release metadata not used.

BShokz OpenFit Air 2

Not available

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

13.02h=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

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Full charge time (measured)iBuds in the case, 0 to 100 %. Measured by a reviewer

Not available

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

Not available

7.2g(0.3 oz)14Reviewt3.com/tech/earbuds/shokz-openfit-air-2-reviewRead 14 October 2026T3 weighed an earbud at 7.2 g on its own scale. Whether this was the exact retail unit is not stated.

Microphones and calls

2 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.

22Press releasebose.com/pressroom/bose-sport-open-earbuds-and-bose-ultra-open-earbuds-2nd-genRead 8 October 2026One dedicated microphone and one voice pickup unit in each earbud. Two physical voice microphones across pair, not four. VPU excluded. Retailer four-voice-mic table is not used.

Not available

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.

21Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026Technical table explicitly states 2 Microphones for the product. Launch press release separately states one dedicated microphone plus one voice pickup unit in each earbud. VPU is excluded from the physical microphone total.

Not available

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

AI2Press releasebose.com/pressroom/bose-sport-open-earbuds-and-bose-ultra-open-earbuds-2nd-genRead 8 October 2026SpeechClarity explicitly described as AI-enhanced voice-isolation technology.

AI1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026Page: dual microphones and AI noise reduction.

Call audio bandwidthiHighest supported call-audio bandwidth. Compatible phone, operating system, call app or network requirements belong in the source note.

Not available

Not available

Mic mute controliAn earbud control that mutes the microphone during calls. Includes touch or pressure gestures and physical buttons. Phone/app-only controls do not qualify.

Not available

Not available

SidetoneiHear your own voice in calls

Not available

Not available

Connectivity

7 of 18 differ

Chip

Not available

Not available

Connections

Bluetooth1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

Bluetooth3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Connectivity section lists Bluetooth V6.1 only. No dongle or wired audio.

Bluetooth

5.41Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

6.12Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Bluetooth V6.1.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Bluetooth V6.1.9Press articleav.watch.impress.co.jp/docs/news/2140693.htmlRead 14 October 2026Bluetooth 6.1.

Bluetooth codecs

SBC, AAC, aptX Adaptive2Press releasebose.com/pressroom/bose-sport-open-earbuds-and-bose-ultra-open-earbuds-2nd-genRead 8 October 2026Both new models SBC/AAC. Ultra Open 2 additionally aptX Adaptive via Snapdragon Sound on compatible Android devices. No aptX Lossless or bitrate/sample-rate inferred.

SBC, AAC3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Audio codecs supported: SBC, AAC.9Press articleav.watch.impress.co.jp/docs/news/2140693.htmlRead 14 October 2026Bluetooth 6.1 with SBC and AAC.10Reviewkopfhoerer.de/test/shokz-openfit-air-2Read 14 October 2026Review: the formats offered are AAC and SBC.11Reviewexpertreviews.co.uk/technology/headphones-audio/shokz-openfit-air-2-reviewRead 14 October 2026Review: SBC and AAC only.

Bluetooth profiles

Not available

A2DP, AVRCP, HFP3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Compatible profiles: A2DP, AVRCP, HFP.

LE Audio

Not available

Not available

Auracast

No5Reviewsoundguys.com/bose-ultra-open-earbuds-2nd-gen-review-164060Read 8 October 2026Exact October 7, 2026 review explicitly says no Auracast. Bluetooth LE Audio capability itself is not stated and remains unknown.

Not available

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

Yes3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

Yes1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026Page: multipoint pairing to two devices at once.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026MultiPoint Pairing page.

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

23Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

22Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Switch between 2 devices.

Multipoint with LDACiMany buds turn multipoint off on LDAC

Not available

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

63Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 35 says up to six devices stored, separately two actively connected. No current exact support revision found establishing a different memory count.

Not available

Automatic switching between own devicesiThrough the maker's account

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Not available

Fast pairing

Google Fast Pair3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

Google Fast Pair, Microsoft Swift Pair2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Footnote: Fast Pair needs Android 11 or later. Microsoft Swift Pair needs Windows 10 or later.

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

9m3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 36 explicitly gives 30 ft or 9 m. Use maker metric value rather than converting rounded 30 ft to 9.144 m.

10m2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Up to 33 ft (10 m).3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Wireless range 10 m.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026Auto Reconnect page: device within 33 ft (10 m).

Wireless receiveri2.4 GHz dongle

Not available

Not available

Receiver connector

Not available

Not available

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

Not available

Not available

Latency

1 of 3 differ

Low latency mode

Not available

Yes10Reviewkopfhoerer.de/test/shokz-openfit-air-2Read 14 October 2026Review: the Shokz app has a Low Latency mode. No latency figure is given.

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

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, iOS4Retailer pagebhphotovideo.com/c/product/2001094-REG/bose_897806_0010_ultra_open_true_wireless.htmlRead 8 October 2026Exact listing app-compatible Android and iOS. Generic Bluetooth computers also supported by maker, but named Windows/macOS/Linux platform support is not stated.

Android, iOS, Windows2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026MultiPoint Pairing is stated as compatible across Android, iOS and Windows. macOS is not stated.

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.

ABose Ultra Open Earbuds (2nd Gen)

Not available

BShokz OpenFit Air 2

Platform	Connection
Android	Bluetooth
iOS	Bluetooth
Windows	Bluetooth

Source2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Bluetooth on the three named platforms. Microphone use per platform is not stated.

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

ABose Ultra Open Earbuds (2nd Gen)

Feature	Needs
Google Fast Pair	Android 6 or higher, Bluetooth and Location enabled, Google Play Services notifications enabled.
Snapdragon Sound / aptX Adaptive	Snapdragon Sound-certified source device, such as a compatible Android device.
Device voice control	Assign an earbud shortcut in the Bose app. Uses the connected device's voice assistant.
Spotify Tap	Assign an earbud shortcut in the Bose app and use the current Spotify app.

Source3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

BShokz OpenFit Air 2

Feature	Needs
Google Fast Pair	Android 11 or later.
Microsoft Swift Pair	Windows 10 or later.
MultiPoint Pairing	Shokz App on the phone and the latest earbud firmware. Turn it on in the app.
Find My Earbuds	Shokz App with the earbuds connected. It rings one earbud. Do not use it while wearing the earbuds.
Low latency mode	Shokz App.
Volume and track controls	Functions may vary depending on the software or device used.

Source2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Footnotes for Fast Pair and Swift Pair. App features are listed under Everything in the App.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026MultiPoint page: update the app and the firmware first. Find My Earbuds page: do not use while wearing the earbuds.

Official licence

Not available

Not available

Battery and charging

9 of 13 differ

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

Not available

56mAh3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Earbuds 56 mAh (min.). Li-ion. A minimum rated capacity, not typical.

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.

No3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Regulatory and legal information, English printed page 5: "DON'T attempt to remove the rechargeable lithium-ion battery from this product. Contact your local Bose retailer or other qualified professional for removal." No user replacement procedure is documented. Page 3 also says to contact Bose customer service for battery service options.

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.

ABose Ultra Open Earbuds (2nd Gen)

Mode	Spatial audio	Includes case recharges	Hours (h)
ANC off	No	No	9
ANC off	Yes	No	5
ANC off	No	No	5
ANC off	Yes	No	4

Source3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 31 footnote 3: Bose April 2026 production-representative units, IEC 60268-1 pink noise via Bluetooth A2DP, RSSI -75 dBm, playback loudness 75 dBA, three-band EQ zero. Codec not stated. Rows in order: Immersive Audio Off + Auto Volume Off 9 h, Immersive On + Auto Volume Off 5 h, Immersive Off + Auto Volume On 5 h, both On 4 h. ANC absent. Earbuds-only maxima. These four claims are explicit, not a combined 5 h unspecified condition.

BShokz OpenFit Air 2

Mode	Codec	Includes case recharges	Hours (h)
ANC off	AAC	No	8
ANC off	AAC	Yes	36
Call	Not available	No	6
Call	Not available	Yes	25

Source2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Compare table: 8 hours (36 hours with case). Footnote: Shokz Lab, 25 plus or minus 2 degrees C, AAC audio at 50 percent volume. Call times are from the Australian table.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Up to 8 hours music on one charge and up to 36 hours with the case. Up to 6 hours calling and up to 25 hours with the case.

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.

9h=CalculatedFrom Claimed battery life

8h=CalculatedFrom Claimed battery life

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

Not available

Not available

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

9h=CalculatedFrom Claimed battery life

8h=CalculatedFrom Claimed battery life

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

Not available

36h=CalculatedFrom Claimed battery life

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

Not available

Not available

Talk time (claimed)

Not available

6h=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.

60min3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 31 earbuds up to 1 h. Depleted earbuds charged to 100% in a fully charged case. April 2026 maker testing.

60min3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Charge the earbuds in the charging case: 60 minutes.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026About 60 minutes to fully charge the earbuds in the charging 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.

Bose lists up to 19.5 additional hours from the case with Immersive Audio and Auto Volume off, up to 11 hours with either on, and up to 8.5 hours with both on. The original manual instead lists 28.5, 16 and 12.5 additional hours. Total playback including case recharges is not resolved.1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026Current FAQ and September 17 launch both state 19.5 additional case hours at standard playback. Manual printed page 31 and footnote 4 explicitly say 28.5 additional, not total. No case total is calculated or stored.

The charging case runs on 5 V plus or minus 5 percent over USB-C. Shokz advises against higher-voltage chargers. The case does not support wireless charging. Charge times come from Shokz lab tests. The quick charge test used a standard power adapter at 25 plus or minus 2 degrees C.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Charge voltage 5 V plus or minus 5 percent.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026Charging pages: 5 V plus or minus 5 percent, a higher-voltage source is not recommended.

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

10min3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

10min2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Footnote: a 10-minute charge in the charging case gives about 3 hours of music playback, AAC at 50 percent volume, standard power adapter.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Quick charge: 10 minutes gives 3 hours of music.

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.

2h3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 31 footnotes 1 and 2 depleted earbuds 10 min in fully charged closed case, then A2DP playback 75 dBA, EQ zero, Immersive Off and Auto Volume Off, up to 2 h. Codec unstated.

3h2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Footnote: about 3 hours of music playback after a 10-minute charge. Earbuds-only runtime.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Quick charge: 10 minutes gives 3 hours of music.

Charging case

4 of 10 differ

Case batteryiCharging-case battery cell capacity. The source note distinguishes typical, rated and output capacity. USB output capacity alone does not qualify.

400mAh3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Regulatory information, English printed page 6, lists "Output Capacity: 400mAh (charge case)" next to the case input rating of 5 V, 1 A. The label says output capacity and gives no typical or rated qualifier. The case has no USB output, so it is read as the case battery capacity. Not charging input current.

600mAh3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Charging case 600 mAh (min.). A minimum rated capacity, not typical.

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.

No3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Same page 5 statement covers the product, listed as Model 444638 Wireless Earbuds with Charging Case. No user case battery procedure is documented.

Not available

Case charging port

USB-C1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

USB-C4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026Charging the Charging Case page: connect the USB-C charging cable to 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.

180min3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 31 charging case up to 3 h wired. Time varies with earbuds inside case. Qi charging time not specified.

100min3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Earbuds plus charging case charging time: 100 minutes. The user guide says about 100 minutes to fully charge the case with a USB-C cable.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026About 100 minutes to fully charge the charging case with a USB-C cable.

Wireless charging

Yes3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 29 supports a compatible third-party wireless charger sold separately. Charging standard not named.

No4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026Charging the Charging Case page: this product does not support wireless charging. The US store page lists a wireless charging line that comes from a shared template and is not used.11Reviewexpertreviews.co.uk/technology/headphones-audio/shokz-openfit-air-2-reviewRead 14 October 2026Review: wireless charging is omitted.

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

4 of 5 differ

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

Button3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

Pressure2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Pressure-sensitive buttons with a tactile point. A footnote says they do not physically depress like a mechanical button.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026Tactile button instructions. The guide calls them tactile buttons.

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

Buttons3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

Pressure2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Press and hold left for volume down and right for volume up.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026Volume Controls page: press and hold left for down, right for up.

Gestures

Press, Double-press, Triple-press, Press and hold, Press, then press and hold3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

Press either button once: play or pause, answer or end a call, Press either button twice: next track, reject a call, Press either button three times: previous track, Press and hold left button: volume down, Press and hold right button: volume up2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Press x1, x2, x3 and press and hold on either earbud.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026Audio, call and volume control pages.

Remappable controls

Yes3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 20 independent press-and-hold shortcuts per earbud. Does not claim all button actions can be remapped.

Yes2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Shokz App: assign volume, play and pause, track skipping, voice assistant and more to the button.

Voice assistant

Phone's native voice assistant3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 25 Device Voice Control: a shortcut set in the Bose app opens the connected device voice control through the earbud microphones. The product page also names Amazon Alexa with Alexa+ access, but the launch press release says Alexa+ support arrives with a firmware update after October 1, so Alexa is not stored.

Phone voice assistant2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026The assistant is not named. A voice assistant can be assigned in the app.

Sensors and health

2 of 9 differ

In-ear detection

Not available

No12Reviewsenses.se/enRead 14 October 2026Review: the OpenFit Air 2 does not have wear detection. The maker documents do not mention it.

Sensors

Voice pickup unit2Press releasebose.com/pressroom/bose-sport-open-earbuds-and-bose-ultra-open-earbuds-2nd-genRead 8 October 2026Launch release: each earbud has one dedicated microphone and one voice pickup unit. Bose does not say how the unit senses speech, and its FAQ says the earbuds do not use bone conduction for sound. Stored as a verbatim sensor name only. voice_pickup_sensor stays empty.

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.

Not available

Not available

Ear tip materials

Not available

Not available

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

Not available

Ear hook1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026The page and guide show an ear hook with a Ni-Ti frame.

Ear tip fit test

Not available

Not available

Dust and water rating, buds

IPX41Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

IP552Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Earbuds IP55 under IEC 60529. Not for swimming or showering.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Earbuds IP55.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026IP Rating page: earbuds IP55 and case IP54 under IEC 60529.

Dust and water rating, case

Not available

IP542Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Charging case IP54.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Charging case IP54.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026IP Rating page: charging case IP54.

Water resistance depth

Not available

Not available

Software

2 of 6 differ

Companion app

Bose app1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

Shokz App2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Shokz App.4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026Shokz App for EQ, MultiPoint, controls, firmware, Find My Earbuds and prompt tone volume.

App platforms

Android, iOS1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

iOS, Android4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026The guide shows App Store and Google Play download badges.

User firmware updates

Yes3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 43 automatic updates through connected Bose app when available. Planned Find Hub/Alexa+/Apple Music features are not stored as available without release evidence.

Yes4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026MultiPoint page says to upgrade the earbud firmware to the latest version. The app has a firmware upgrade function.

Finding network

Not available

Not available

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.

5.9g(0.2 oz)1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026Bud Single 0.013 lb, converted using 453.59237 g/lb and rounded to 5.9 g. Published mass is rounded and applies to one bud. Retailer 5.7 g is not used.

7.2g(0.3 oz)2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Compare table: earbuds 7.2 g plus or minus 0.2 g.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Earbuds 7.2 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.

Width17.7Height18.9Depth27.7mm(0.7 × 0.7 × 1.1 in)1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026Maker-labelled one-bud axes: 0.746 in H x 0.697 in W x 1.091 in D. Converted with 25.4 mm/in and rounded to 0.1 mm.

Not available

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

49.9g(1.8 oz)1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026Case 0.110 lb, converted using 453.59237 g/lb and rounded to 49.9 g. Published mass is rounded. Retailer 48.2 g is not used.

46.4g(1.6 oz)2Maker product pageshokz.com/pages/openfit-air-2Read 14 October 2026Compare table: charging case 46.4 g plus or minus 2 g. Total 60.8 g plus or minus 2 g.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Charging case 46.4 g plus or minus 2 g.

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

Width26.8Height47.5Depth66mm(1.1 × 1.9 × 2.6 in)1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026Maker-labelled case axes: 1.870 in H x 1.056 in W x 2.598 in D. Converted with 25.4 mm/in and rounded to 0.1 mm.

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

Not available

FCC IDs

A94638L, A94638R3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

Not available

Other certifications

Snapdragon Sound3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026Printed page 40 explicitly names Snapdragon Sound technology, paired with certified compatible source device.

Not available

In the box

1 of 2 differ

In the box

2 Bose Ultra Open Earbuds (2nd Gen), Charging case, Quick Start Guide, Safety Sheet1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026Maker list is corroborated by exact US Abt and original manual. No USB cable or power adapter included. The charging accessory is the case, despite generic technical-table charging-accessory Yes.

OpenFit Air 2 open-ear Bluetooth earbuds, Charging case, User guide, Legal information, Warranty card1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026What's in the box: earbuds x2, charging case, packaging box, user guide, legal information, warranty card. No USB-C cable is included.

Cables included

Not available

Not available

Links

Not compared

Product page

www.bose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.html1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026

shokz.com/products/openfit-air-21Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026

Spec sheet

Not available

shokz.com.au/products/openfit-air-23Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Full specification table on the Australian maker store.

Manual

assets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdf3Owner's manualassets.bosecreative.com/asset/b512e4d6-8ac6-45c5-a4da-2e9aef467ef2/898298_OG_UOEBII27-HEADPHONEOPN_ML.pdfRead 8 October 2026

help.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_EN4Owner's manualhelp.shokz.com.au/file-asset/OpenFitAir2_User_Guide_PDF_ENRead 14 October 2026English user guide for model T520, 45 pages.

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

1 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.

1year1Maker product pagebose.com/p/earbuds/bose-ultra-open-earbuds-2nd-gen/ULT2-HEADPHONEOPN.htmlRead 8 October 2026US one-year Bose limited warranty. Optional purchased BoseCare excluded.

2years1Maker product pageshokz.com/products/openfit-air-2Read 14 October 2026US store: 2-year warranty on every purchase from Shokz.com. The Australian specification table also says 2 years.3Maker product pageshokz.com.au/products/openfit-air-2Read 14 October 2026Warranty 2 years, Australian store.

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