Earbuds / Compare

Bose Ultra Open Earbuds (2nd Gen) vs Huawei FreeClip 2

A

Product A: Bose

Ultra Open Earbuds (2nd Gen)

71 of 166 known

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B

Product B: Huawei

FreeClip 2

62 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)

BHuawei FreeClip 2

General

7 of 8 differ

Series

Not available

FreeClip1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026The page compares FreeClip 2 with the HUAWEI FreeClip, so the FreeClip line is stored as the series.

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.

T002710Retailer pageshop.halan.com/en/Huawei-Free-Buds-Clip2-T0027-Black/69df71c26adeb0650ec62693/p/Dream-2000-AccRead 14 October 2026Egyptian retailer listing: model T0027 for the Black earbuds. A Singapore listing gives T0027 with case model T0027C. The maker pages state no model code.

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.

Not available

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 September 20254Press articlefonearena.com/blog/465174/huawei-freeclip-2-price-features.htmlRead 14 October 2026FoneArena, 24 Sep 2025: announced in China with sales from 20 Oct 2025 at 1299 yuan.

Status

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

Available11Maker product pageconsumer.huawei.com/my/headphones/freeclip2Read 14 October 2026The Huawei Malaysia store lists the FreeClip 2 for sale. Dutch retailers list it with delivery times of 1 to 3 days. The German maker page also shows the FreeClip 2 S, a later model that is not stored here.

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

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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.

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€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.

€1993Press articlehuaweicentral.com/huawei-freeclip-2-launched-globally-with-a-big-shift-in-designRead 14 October 2026Original price 199 EUR at the global launch. The article names no country. Italian and German reviews list 199 EUR at Huawei.7Reviewkopfhoerer.de/test/huawei-freeclip-2Read 14 October 2026German review: 199.00 EUR at Huawei.8Reviewsmartworld.it/recensioni/huawei-freeclip-2Read 14 October 2026Italian review: 199 EUR list price.

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

DE, IT, MY, GB7Reviewkopfhoerer.de/test/huawei-freeclip-2Read 14 October 2026German review, updated 19 Jan 2026: 199 EUR at Huawei and Galaxus.8Reviewsmartworld.it/recensioni/huawei-freeclip-2Read 14 October 2026Italy: list price 199 EUR. Release 22 Jan 2026 in Italy.9Reviewexpertreviews.co.uk/technology/headphones-audio/huawei-freeclip-2-reviewRead 14 October 2026UK review of 6 Feb 2026: reviewed price 180 GBP.11Maker product pageconsumer.huawei.com/my/headphones/freeclip2Read 14 October 2026Malaysia: the Huawei Malaysia site sells the FreeClip 2.

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.

Berry Purple, Blue, Rose Gold, White, Black1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026The global specs tab lists Berry Purple, Blue, Rose Gold, White and Black. Other regions list fewer, for example Blue and White in Australia, and some call them Denim Blue, Feather White and Modern Black.2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Row under the product name: Berry Purple, Blue, Rose Gold, White, Black.

Segment

Not available

Music1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Maker page: open-ear listening, calls and sound. No sport, gaming or office positioning.

Design

2 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 pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Airy C-bridge design: the earbuds clip on the ear and leave the ear canal open.

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

Clip1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026C-bridge of liquid silicone and a shape-memory alloy with a Comfort Bean and an Acoustic Ball.

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

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RGB lighting

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Drivers and sound

5 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.

BHuawei FreeClip 2

Type	Diameter (mm)	Count per earbud
Dynamic	10.8	1

Source2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Speaker row: 10.8 mm powerful dual-diaphragm driver. The singular driver is read as one driver per earbud. The page footnote calls it the open dual-diaphragm acoustic unit. The technology is stored as dynamic from the reviews below, since the maker does not name it.6Measurementsoundguys.com/product/huawei-freeclip-2Read 14 October 2026Spec table: 1 dynamic driver of 10.8 mm. This agrees with the one driver per earbud read from the maker page.7Reviewkopfhoerer.de/test/huawei-freeclip-2Read 14 October 2026Spec list: open-ear dynamic transducer with a dual-sided diaphragm.

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.

Dynamic4Press articlefonearena.com/blog/465174/huawei-freeclip-2-price-features.htmlRead 14 October 2026Dynamic drivers of 10.8 mm. The article says dual 10.8 mm dynamic drivers, which reads as the dual-diaphragm unit.6Measurementsoundguys.com/product/huawei-freeclip-2Read 14 October 2026Spec table: dynamic.7Reviewkopfhoerer.de/test/huawei-freeclip-2Read 14 October 2026Dynamic transducer.

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

Not available

10.8mm=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

1=CalculatedFrom Drivers per bud

Diaphragm material

Not available

Not available

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 kHz2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Speaker row: frequency response range 20 Hz to 20 kHz. Conditions are not stated.

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

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Sensitivity reference

Not available

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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.

105Reviewsoundguys.com/huawei-freeclip-2-review-151644Read 14 October 2026Three EQ presets and a 10-band custom EQ in the HUAWEI Audio app. The preset count differs in other reviews, so no presets are stored.7Reviewkopfhoerer.de/test/huawei-freeclip-2Read 14 October 202610-band EQ in the Huawei Audio Connect app, up to three presets can be saved.8Reviewsmartworld.it/recensioni/huawei-freeclip-2Read 14 October 2026Customizable 10-band equalizer in the 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.

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Volume limit

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Spatial audio

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

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

No5Reviewsoundguys.com/huawei-freeclip-2-review-151644Read 14 October 2026No active noise cancellation. The review also lists SBC and AAC only and Bluetooth 5.4, which differ from the maker and other reviews.

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

Not available

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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

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

Not available

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

Not available

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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

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Transparency mode

Not available

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Adjustable transparency

Not available

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

Not available

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Conversation detection

Not available

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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

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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.

SoundGuys lab, relative to 1 kHz and compared with the SoundGuys Headphone Preference Curve. The response is about 8 dB lower at 100 to 200 Hz, 6.4 dB higher at 2 kHz, 11.9 dB higher at 3.15 kHz (the peak), 6.8 dB higher at 8 kHz and 5.1 dB lower at 16 kHz.6Measurementsoundguys.com/product/huawei-freeclip-2Read 14 October 2026SoundGuys product page, measured frequency response table in relative dB against the SoundGuys Headphone Preference Curve. Values: 100 Hz -7.8, 125 Hz -7.5, 200 Hz -8.4, 1 kHz 0.0 (reference), 2 kHz +6.4, 3.15 kHz +11.9, 4 kHz +10.5, 5 kHz +11.8, 8 kHz +6.8, 12.5 kHz +1.2, 16 kHz -5.1. Firmware, fit and unit are not stated. The same page lists 20 Hz at -43.5 dB and 20 kHz at -27.6 dB. Fnac's lab called the response even, which differs.

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

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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

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

Not available

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

Not available

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

Not available

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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

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

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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.

BHuawei FreeClip 2

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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)

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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

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Microphones and calls

3 of 7 differ

Voice microphones in both earbudsiPhysical call and beamforming microphones across the pair. Excludes case microphones and vibration sensors. Shared ANC microphones can also count here when used for calls.

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

Yes1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Specs tab, Sensor row: bone acoustic sensor.

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 pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Page: an advanced 3-mic call noise cancellation system with multi-channel DNN algorithms and an NPU AI processor. The page does not say whether the three microphones are per earbud, so no microphone count is stored.

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

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SidetoneiHear your own voice in calls

Not available

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Connectivity

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Chip

Not available

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Connections

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

Bluetooth2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Bluetooth only. The case has a USB-C charging port.

Bluetooth

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

6.02Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Connectivity row: BT 6.0. SoundGuys and PhoneArena list 5.4. The maker value is stored.

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.

Not available

Bluetooth profiles

Not available

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LE Audio

Not available

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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 pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Dual-device connections to iOS, Android or Windows devices at the same time, with automatic audio switching.2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Connectivity row: simultaneous Bluetooth connection with dual devices supported.

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

21Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Specs tab: simultaneous Bluetooth connection with dual devices is supported. EMUI devices can switch between more than two devices.

Multipoint with LDACiMany buds turn multipoint off on LDAC

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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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Fast pairing

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

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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.

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

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Latency

1 of 3 differ

Low latency mode

Not available

Yes7Reviewkopfhoerer.de/test/huawei-freeclip-2Read 14 October 2026Review text: a low-latency mode for computer and phone games is part of the equipment. The maker pages do not list it.

Claimed latency

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Lowest claimed latency

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Compatibility

3 of 4 differ

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

Android, 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, Windows1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Page: devices running iOS, Android or Windows.

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

BHuawei FreeClip 2

Platform	Connection
Android	Bluetooth
iOS	Bluetooth
Windows	Bluetooth

Source1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Bluetooth connection to iOS, Android and Windows devices. Microphone use is not stated per platform.

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

BHuawei FreeClip 2

Feature	Needs
Pop-up pairing	Huawei phone or tablet running EMUI 10.0 or later.
Connection to more than two devices	The earbuds must be connected to EMUI devices.
Head motion controls	Off by default. Works during cellular calls. Nod to answer and shake the head to reject.
Adaptive volume	In the trial phase and off by default. Turn it on in HUAWEI Audio Connect under Experimental features.
Battery test	Huawei lab, HUAWEI Pura 70 on EMUI 14.2.0, music at 50 percent volume in AAC, other features at default.

Source1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Page footnotes 9, 13 and 14, the specs tab and the cross-OS section.

Official licence

Not available

Not available

Battery and charging

8 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

60mAh2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Earbuds 60 mAh, typical capacity each.

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.

BHuawei FreeClip 2

Mode	Codec	Includes case recharges	Hours (h)
ANC off	AAC	No	9
ANC off	AAC	Yes	38
Call	Not available	No	6
Call	Not available	Yes	25

Source1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Up to 9 hours of music after a full charge and 38 hours with a fully charged case. Footnote 4: Huawei lab, HUAWEI Pura 70 on EMUI 14.2.0, music at 50 percent volume in AAC, other features at default. The call rows come from the specs tab: 6 hours and 25 hours with the case.2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Battery Life row: music 9 hours and 38 hours with the case, voice calling 6 hours and 25 hours with the case. Voice test: 50 percent volume in a low-noise environment.

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

9h=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

9h=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

38h=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.

40min2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Charging Time row: about 40 minutes for the charging case to charge the earbuds.

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.

Wired charging uses the USB Type-C port at 5 V 1.5 A. The case alone takes about 50 minutes wired and about 150 minutes on a wireless charger. Earbuds and case together take about 60 minutes wired. No charging cable is in the box.2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Charging Method and Charging Time rows. The test was run at 25 C.

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

10min1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Page: 10 minutes of charging for 3 hours of audio. Footnote 12: earbuds powered off from low battery, charged for 10 minutes by cable or by a case above 80 percent, with the case closed.

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.

3h1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 20263 hours of listening in the footnote 12 test, AAC at 50 percent volume. Earbuds only.

Charging case

5 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.

537mAh2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Charging case 537 mAh, typical capacity.

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-C2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Wired charging: USB Type-C port, 5 V 1.5 A.

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.

50min2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Charging Time row: about 50 minutes for the charging case only, wired.

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.

Yes2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Wireless charger: up to 3 W.

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

Not available

Qi7Reviewkopfhoerer.de/test/huawei-freeclip-2Read 14 October 2026Review spec list: Qi wireless charging supported. The maker names only wireless charging up to 3 W.

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

Not available

3W2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Wireless charger: up to 3 W. The standard is not named on the page.

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

Touch, Swipe, Head gestures1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Tap and swipe controls on the earbuds and head motion controls for calls.

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

Swipe1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Swipe on the Comfort Bean to adjust the volume.

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

Double-tap: play or pause, answer or end a call, Triple-tap: next track, Swipe up or down: volume up or down, Nod to answer a call or shake the head to reject it1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Page and specs tab: double-tap, triple-tap, swipe, and nod or shake for calls.2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Controls row: double-tap, triple-tap and swipe up or down.

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.

Yes1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Specs tab: gestures can be customised in the HUAWEI Audio Connect app.

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.

Not available

Sensors and health

2 of 9 differ

In-ear detection

Not available

Yes7Reviewkopfhoerer.de/test/huawei-freeclip-2Read 14 October 2026Review text: wear detection that can be turned on or off in the app. The maker lists an infrared sensor.

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.

Infrared sensor, Hall sensor, Gyroscope and accelerometer integrated sensor, Bone acoustic sensor, Touch sensor2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Sensor row, as listed.

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

2 of 7 differ

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

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

Not available

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

IP571Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Page footnote 3: IP57 for the earbuds only under IEC 60529.2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Earbuds IP57.

Dust and water rating, case

Not available

IP541Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Specs tab: charging case IP54.2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Charging case IP54.

Water resistance depth

Not available

Not available

Software

1 of 6 differ

Companion app

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

HUAWEI Audio Connect1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026HUAWEI Audio Connect app. Footnote 15 says it needs iOS 13.0, iPadOS 13.0 or Android 8.0 or later.

App platforms

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

Android, iOS1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Footnote 15: iOS and Android devices.

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.

Yes7Reviewkopfhoerer.de/test/huawei-freeclip-2Read 14 October 2026Review text: the firmware of the earbuds can be updated through the app.

Finding network

Not available

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Not available

Dimensions and weight

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.

5.1g(0.2 oz)1Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Each earbud 5.1 g.2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Each earbud approx. 5.1 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.

Width26.7Height25.4Depth18.8mm(1.1 × 1 × 0.7 in)2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Earbuds: 25.4 mm (Height) x 26.7 mm (Width) x 18.8 mm (Depth).

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.

37.8g(1.3 oz)2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Charging case approx. 37.8 g. The case and earbud weights are listed separately, so this is the empty case.

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.

Width49.6Depth25mm(2 × 1 in)2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Charging case: 50.0 mm (Length) x 49.6 mm (Width) x 25.0 mm (Depth). Length is not a height axis, so only the width and depth are stored.

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.

Earbuds x 1 pair (left and right), Charging case x 1, Quick Start Guide & Safety information x 1, Warranty card x 12Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026In The Box: earbuds, charging case, Quick Start Guide and Safety information, warranty card. The page says the product does not come with a USB Type-C charging cable.

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

consumer.huawei.com/en/headphones/freeclip21Maker product pageconsumer.huawei.com/en/headphones/freeclip2Read 14 October 2026Global maker product page.

Spec sheet

Not available

consumer.huawei.com/en/headphones/freeclip2/specs2Maker product pageconsumer.huawei.com/en/headphones/freeclip2/specsRead 14 October 2026Global specifications tab.

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

Not available

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.

Not available

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