Earbuds / Compare

Ozlo Sleepbuds 2 vs Razer Hammerhead V3 HyperSpeed

A

Product A: Ozlo

Sleepbuds 2

52 of 166 known

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B

Product B: Razer

Hammerhead V3 HyperSpeed

64 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

AOzlo Sleepbuds 2

BRazer Hammerhead V3 HyperSpeed

General

7 of 8 differ

Series

Sleepbuds1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026The product page and its user guide pages call the line Sleepbuds. The first generation is the Ozlo Sleepbuds.

Hammerhead1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026The maker's Hammerhead V3 line. The newsroom post names the line Hammerhead V3.

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

010021C01WW012Maker product pageozlosleep.com/products/sleepbuds.jsRead 15 October 2026US store product data: SKU 010021C01WW01, a single variant.

RZ12-05610100-R3U1, RZ12-05610100-R3G1, RZ12-05610100-R3A11Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026US store SKU RZ12-05610100-R3U1 in the page product data. The EU and Japan models are in the other sources.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Japan model RZ12-05610100-R3A1.12Retailer pagenordicgamesupply.com/products/razer-hammerhead-v3-hyperspeedRead 15 October 2026Retailers list the European model RZ12-05610100-R3G1 in black.

GTIN / EAN

8500709611652Maker product pageozlosleep.com/products/sleepbuds.jsRead 15 October 2026US store barcode field: 850070961165. The Europe and UK store feeds list the same SKU and barcode.

8887910061732, 45736267306766Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026JAN code 4573626730676 for the Japan model R3A1.12Retailer pagenordicgamesupply.com/products/razer-hammerhead-v3-hyperspeedRead 15 October 2026Nordic Game Supply product data lists the barcode 8887910061732. Scan UK, Komputronik and a French price site give the same EAN with model R3G1.

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

28 July 20263Press articlesoundguys.com/ozlo-sleepbuds-2-launch-160755Read 15 October 2026The Tom's Guide launch review is dated 28 July 2026 and says the Sleepbuds 2 launch today.4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Published 28 July 2026: the Sleepbuds 2 launch today.7Press articletechcrunch.com/2026/07/28/ozlos-sleepbuds-2-build-on-boses-sleep-earbud-legacyRead 15 October 2026Unveiled on Tuesday 28 July 2026.

9 April 20264Press releaserazer.com/newsroom/product-news/hammerhead-v3-lineRead 15 October 2026Razer newsroom post dated 9 April 2026.5Press releasezaikei.co.jp/releases/3387757Read 15 October 2026Release dated 9 April 2026 from Irvine, California.

Status

Available2Maker product pageozlosleep.com/products/sleepbuds.jsRead 15 October 2026US store lists the product as available on 2026-10-15.

Available1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Buy button live at US$129.99 and the product data shows the item in stock.4Press releaserazer.com/newsroom/product-news/hammerhead-v3-lineRead 15 October 2026Launch post and the store page show the product on sale.

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

Not available

Not available

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

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.

$2791Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026The US store lists 279 USD with a free sleep mask for a limited time. SoundGuys news and the Tom's Guide launch review give the 279 USD launch price.3Press articlesoundguys.com/ozlo-sleepbuds-2-launch-160755Read 15 October 2026SoundGuys news, 29 Jul 2026: Ozlo Sleepbuds 2, a 279 USD pair.4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Review: launching with a sale price of 279 USD.7Press articletechcrunch.com/2026/07/28/ozlos-sleepbuds-2-build-on-boses-sleep-earbud-legacyRead 15 October 2026TechCrunch, 28 Jul 2026: priced at 279 USD, 30 USD above the original Sleepbuds. A sleep mask and travel case come with a purchase for a limited time.

$129.991Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026US page price US$129.99. The launch release gives the same US$129.99 recommended price. Excludes sales tax.5Press releasezaikei.co.jp/releases/3387757Read 15 October 2026Japanese translation of the Razer global release: recommended price 129.99 USD.7Reviewsoundguys.com/razer-hammerhead-v3-hyperspeed-review-158180Read 15 October 2026Review spec box: original price 129.99 USD.

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

Not available

€139.993Maker product pagerazer.com/de-de/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026German maker page price 139,99 EUR including VAT. The launch release gives the same 139.99 EUR recommended price.5Press releasezaikei.co.jp/releases/3387757Read 15 October 2026Same release: recommended price 139.99 EUR. Tax treatment is not stated and the German store price is incl. VAT.

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

US, EU, GB1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026US store plus Europe (ozlosleep.eu) and UK (ozlosleep.co.uk) stores. Documented subset. The warranty is 1 year in the US and 2 years in the EU and UK. No euro or pound launch price is stored, since only current store prices were found.

US, EU, JP1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026US store page.3Maker product pagerazer.com/de-de/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026German page of the Razer EU store. The EU English page shows the same price.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Japan retail launch from 10 April 2026.

ColoursiThe maker's own colour names

Not available

Black6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Colour row: black. The US product data shows one colour.

Segment

Sleep1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Maker: sleep earbuds, designed for sleep only.

Gaming1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page title: Razer Hammerhead V3 HyperSpeed Gaming Earbud. The maker sells it as gaming earbuds.

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.

In-ear1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Passive noise cancellation via silicone tips (not ANC). The silicone tips seal the ear.5Reviewsoundguys.com/ozlo-sleepbuds-2-review-161143Read 15 October 2026Review: passive isolation depends on how well the silicone tips seal in your ears.

In-ear6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Headset type row: canal type, which is in-ear.

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

Stemless1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026The earbuds are a small low-profile body with no stalk, as shown on the product page. A silicone tip with a wing carries each body.

Stem8Reviewtechradar.com/gaming/razer-hammerhead-v3-hyperspeed-gaming-earbuds-reviewRead 15 October 2026Review: a basic stemmed in-ear design with a bulbous body.

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

Not available

Not available

RGB lighting

Not available

Yes1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026The case has a Chroma LED bar. It shows pairing, charging and alerts and TechRadar describes a rainbow pattern when the case opens. The earbuds have no lighting.8Reviewtechradar.com/gaming/razer-hammerhead-v3-hyperspeed-gaming-earbuds-reviewRead 15 October 2026Review: an RGB strip on the case lights in a rainbow pattern when the case opens and shows pairing and charging status. The Razer logo on the earbuds does not light.

Drivers and sound

9 of 17 differ

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

AOzlo Sleepbuds 2

Type
Balanced armature

Source16Press articleaudioxpress.com/news/ozlo-launches-sleepbuds-2-expanding-sleep-earbuds-as-a-specialized-audio-categoryRead 21 October 2026Same sentence names one new balanced armature driver. No count, role or size is stated, so only the type is stored.

BRazer Hammerhead V3 HyperSpeed

Type	Diameter (mm)
Dynamic	11

Source6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Driver type row: 11 mm dynamic. The sheet does not state a count per earbud or a role, so those are left out.

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

Balanced armature16Press articleaudioxpress.com/news/ozlo-launches-sleepbuds-2-expanding-sleep-earbuds-as-a-specialized-audio-categoryRead 21 October 2026audioXpress, launch news: Ozlo says Sleepbuds 2 use a super-efficient custom audio amplifier paired with a new balanced armature driver. The maker product page, help center and press release name an amplifier but no driver type.

Dynamic6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Driver type row: dynamic.

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

Not available

11mm=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.

Not available

Not available

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 kHz1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Tech Specs: Headphone Frequency Response 20 Hz to 20 kHz. Test conditions are not stated.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Frequency response row: 20 Hz to 20 kHz.

Impedance

Not available

32Ω1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Tech Specs: Headphone Impedance 32 ohm.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Impedance row: 32 ohm at 1 kHz.

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

Not available

105dB1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Tech Specs: Headphone Sensitivity 105 dB. The Japan spec sheet gives the reference as dB SPL per mW at 1 kHz.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Sensitivity row: 105 dB SPL per mW at 1 kHz.

Sensitivity reference

Not available

Per 1 mW6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Sensitivity row: dB SPL per mW at 1 kHz.

Max sample rateiHighest supported audio sample rate under the codec and source-device conditions in the source note. This does not establish lossless playback.

Not available

Not available

Max bit depthiHighest supported audio bit depth under the codec and source-device conditions in the source note. Bluetooth version alone does not establish this.

Not available

Not available

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

Not available

Not available

Personalised soundiA profile from a hearing test or ear scan

Not available

Not available

Onboard EQ

Not available

Not available

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

Not available

67Reviewsoundguys.com/razer-hammerhead-v3-hyperspeed-review-158180Read 15 October 2026Review, Razer Audio app version 10.32: no parametric EQ, but a custom preset can be built on a 6-band EQ.

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

Balance, Focus, Spoken Word, Airplane Mode4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Audio Tuning profiles in the app: Balance, Focus, Spoken Word and Airplane Mode. Ozlo calls this tuning. It changes the audio for the content or the setting.

Gaming, Music, Movie2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Synapse, Audio equalizer: presets for gaming immersion, movie viewing and music. A manual change sets the preset to Custom, which is not stored as a preset.7Reviewsoundguys.com/razer-hammerhead-v3-hyperspeed-review-158180Read 15 October 2026Review names the Music, Gaming and Movie presets. TechRadar and CGMagazine count three presets plus a custom one.8Reviewtechradar.com/gaming/razer-hammerhead-v3-hyperspeed-gaming-earbuds-reviewRead 15 October 2026Review: three default EQ profiles for gaming, music and movies, plus a custom one.

Volume limit

Not available

Not available

Spatial audio

1 of 2 differ

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

Not available

THX Spatial Audio1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page FAQ: THX Spatial Audio on PC, integrated in Razer Synapse, with 7.1 surround sound.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Activate THX Spatial Audio: 360 degree positional audio through Razer Synapse.

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

Not available

Not available

Noise cancelling

3 of 11 differ

Active noise cancelling

No1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Tech specs, Noise Masking: passive noise cancellation via silicone tips (not ANC). FAQ: block and replace noise masking is different from active noise cancellation.

Yes1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text: Hybrid Active Noise Cancellation.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Using your earbuds, Utilizing the Active Noise Cancellation: a 2 second hold switches ANC on, ANC off and Ambient mode.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026ANC row: equipped.

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

Not available

Hybrid1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026The maker names the system Hybrid Active Noise Cancellation. Stored as hybrid on that wording. The page does not describe the microphone layout.4Press releaserazer.com/newsroom/product-news/hammerhead-v3-lineRead 15 October 2026Launch post: Hybrid Active Noise Cancellation with up to 50 percent better noise reduction than the previous generation.

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

No8Press articlethe-gadgeteer.com/2026/07/29/ozlo-sleepbuds-2-sleep-earbudsRead 15 October 2026Article of 29 Jul 2026: no microphone array, no transparency mode and no calls. The earbuds have no microphones, so a transparency mode cannot exist.

Yes2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Utilizing the Active Noise Cancellation and the Enhancement subtab: Ambient mode lets external sounds in.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Controls row: touch control switches between ANC and ambient mode.8Reviewtechradar.com/gaming/razer-hammerhead-v3-hyperspeed-gaming-earbuds-reviewRead 15 October 2026Review: the earbuds support ANC and a transparency mode.10Reviewbasic-tutorials.com/reviews/gadget-reviews/razer-hammerhead-v3-hyperspeed-reviewRead 15 October 2026Review spec table lists a transparency mode.

Adjustable transparency

Not available

Not available

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

Not available

Not available

Conversation detection

Not available

Not available

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

Not available

Not available

Measured

4 of 23 differ

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

Not available

In the default Music preset the bass is slightly above the SoundGuys preference curve and the mids are slightly below it. The treble is raised from 4 kHz to 8 kHz and lowered from 9 kHz to 15 kHz. The reviewer finds the Gaming preset better tuned for competitive play.7Reviewsoundguys.com/razer-hammerhead-v3-hyperspeed-review-158180Read 15 October 2026Lab frequency response in the default Music preset against the SoundGuys preference curve. Reviewer notes only, no dB value stored. Unit supplied by Razer.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

The reviewer calls the microphone quality great. Voices come in loud and clear and background noise sounds naturally distant. The test uses ideal, office, reverberant, street and windy conditions.7Reviewsoundguys.com/razer-hammerhead-v3-hyperspeed-review-158180Read 15 October 2026Reviewer microphone demos in ideal, office, reverberant, street and windy conditions. No numeric value stored.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

AOzlo Sleepbuds 2

Not available

BRazer Hammerhead V3 HyperSpeed

Hours (h)
15.47

Source7Reviewsoundguys.com/razer-hammerhead-v3-hyperspeed-review-158180Read 15 October 2026Lab test: 15 hours 28 minutes over the 2.4 GHz HyperSpeed dongle, firmware version not stated, ANC state not stated, volume from the SoundGuys lab method. The claim is 10 hours. The reviewer calls the lab result much better than the claim and measured 7.5 hours in daily use with the dongle.

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

Not available

15.47h=CalculatedFrom Battery life (measured)

Battery life with case (measured)iReviewer-tested total including earbuds and case recharges. Do not calculate this by multiplying one-charge runtime by claimed recharge count.

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Microphones and calls

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.

01Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Tech specs: No microphone, designed for sleep only. FAQ: there is no microphone in the Sleepbuds to support phone calls.

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.

01Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026No microphone in the earbuds. The Smart Case has a microphone that only measures room noise. The case is excluded from this count.

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

Not available

Not available

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

Yes1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page FAQ: a 2 second press on either earbud mutes or unmutes the microphone. The master guide names the right earbud only.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Function button quick reference: tap and hold for 2 seconds on the right earbud mutes or unmutes the earbud microphone.

SidetoneiHear your own voice in calls

Not available

Not available

Connectivity

8 of 18 differ

Chip

Not available

Not available

Connections

Bluetooth1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Bluetooth only. The Smart Case connects to the phone over Bluetooth Classic.

2.4 GHz, Bluetooth1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text: Razer HyperSpeed Wireless (2.4 GHz) and Bluetooth 6.0.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Connect to your earbuds: Bluetooth, the wireless dongle (2.4 GHz) and the charging case with the dongle.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Connection row: Razer HyperSpeed Wireless (2.4 GHz) and Bluetooth 6.0.

Bluetooth

5.31Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Connection section: Bluetooth 5.3 radios.

6.01Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text and Tech Specs: Bluetooth 6.0.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Connection row: Razer HyperSpeed Wireless (2.4 GHz) and Bluetooth 6.0.

Bluetooth codecs

Not available

SBC, AAC7Reviewsoundguys.com/razer-hammerhead-v3-hyperspeed-review-158180Read 15 October 2026Review: the Bluetooth 6.0 connection supports the AAC and SBC codecs and has no higher bitrate codec. The Razer Japan spec sheet lists LC3+ as an audio codec without naming the link. SoundGuys names LC3+ as missing on Bluetooth, so LC3+ is not stored here.11Spec databaseinside-digital.de/in-ear-kopfhoerer/razer-hammerhead-v3-hyperspeedRead 15 October 2026German data sheet: audio codecs AAC and SBC.

Bluetooth profiles

A2DP1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Connectivity: Bluetooth 5.3 (A2DP + Low Energy Audio). Only A2DP is named as an audio profile.

Not available

LE Audio

Yes1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Connectivity: Bluetooth 5.3 radios supporting A2DP and Low Energy Audio (LEA) enabled streaming. No independent test of LE Audio was found.

Not available

Auracast

Not available

Not available

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

No5Reviewsoundguys.com/ozlo-sleepbuds-2-review-161143Read 15 October 2026Review cons: no Bluetooth multipoint. The buds can only connect to one device at a time. Firmware 02.11.2606011.

Not available

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

Not available

Not available

Multipoint with LDACiMany buds turn multipoint off on LDAC

Not available

Not available

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

Not available

Not available

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Not available

Not available

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

Not available

Not available

Wireless receiveri2.4 GHz dongle

Not available

Included1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text: a compact, removable dongle sits inside the HyperSpeed case.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026What's inside: the charging case comes with a USB Type C wireless dongle.

Receiver connector

Not available

USB-C1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text: the dongle is a USB-C dongle with USB C passthrough on the case. The Japan spec sheet names a USB-C dongle.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026What's inside: USB Type C wireless dongle.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Accessories row lists a USB-C dongle.

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

Not available

Not available

Latency

None of 3 known

Low latency mode

Not available

Not available

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

Not available

Compatibility

3 of 4 differ

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

Android, iOS1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026The page lists streaming from any Bluetooth source and the Ozlo Sleep app for iOS and Android.

Windows, macOS, PS5, Nintendo Switch, Nintendo Switch 2, SteamOS, Android, iOS1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page FAQ: iOS and Android phones, PC, Mac, PlayStation 5, Nintendo Switch, Steam Deck and other handhelds. Steam Deck is stored as SteamOS. Nintendo Switch 2 comes from the TechRadar spec table.8Reviewtechradar.com/gaming/razer-hammerhead-v3-hyperspeed-gaming-earbuds-reviewRead 15 October 2026Review spec table: PC, PS5, mobile, Nintendo Switch and Nintendo Switch 2.

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.

AOzlo Sleepbuds 2

Not available

BRazer Hammerhead V3 HyperSpeed

Platform	Connection
Windows	2.4 GHz
Windows	Bluetooth
PS5	2.4 GHz
SteamOS	2.4 GHz
Android	2.4 GHz
Android	Bluetooth
iOS	Bluetooth

Source1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text: 2.4 GHz audio with phones, tablets, PCs, Steam Deck and PlayStation 5. Bluetooth for Bluetooth audio devices. The Japan spec sheet lists Android and iOS phones over Bluetooth and Windows PCs through the USB-C dongle. The connection for Mac and Nintendo Switch is not stated, so those platforms have no row.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Setup steps for PC sound settings and PS5 audio output, both over the dongle or the case. Bluetooth is described for mobile devices.

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

AOzlo Sleepbuds 2

Feature	Needs
Setup and audio streaming	A phone and an active Bluetooth connection are needed to set up the earbuds and to stream audio. The earbuds connect to the Smart Case and the Smart Case connects to the phone.
Ozlo Sleep app	Android 12 or later. The product page says iOS 17 or later on iPhone and iPad. The help center says iOS 18 or later on iPhone and iPad.
Phone-free Sleep Sound	The earbuds can start the built-in Sleep Sound when taken out of the case, with no phone or Bluetooth connection. This is set up in the app.
In-ear alarm	Set in the Ozlo app. It works without a phone connection and in Bluetooth Disabled mode.
Battery test	Ozlo test with streaming audio and Sleep Sounds at 50 percent volume.

Source1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026FAQ and System Requirements sections.10Maker product pageozlo-sleepbuds-2.gorgias.help/en-US/what-are-the-app-requirements-7597631Read 21 October 2026Help center, What are the app requirements: iOS 18 or later on iPhone and iPad, Android 12 or later on phones. The product page FAQ says iOS 17 or later. Both are kept in the requirement text, since the maker documents disagree. The App Content and Sound Library Specs article says iOS 18 or later and Android 12 or later.

BRazer Hammerhead V3 HyperSpeed

Feature	Needs
THX Spatial Audio	Available on PC through Razer Synapse 4 on Windows 11 or higher. The virtual 7.1 surround sound needs Windows 11 version 23H2 or higher.
Razer Audio app	iOS 18 or Android 14 or higher with Bluetooth. The earbuds must be connected to the phone by Bluetooth to be configured in the app.
Razer Synapse settings	Windows 11 or higher. The earbuds cannot be configured in Synapse while the input source is set to Bluetooth.
Do Not Disturb	Blocks phone calls only while the earbuds are connected to the wireless dongle and to a mobile device at the same time.

Source1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page FAQ: 7.1 surround sound support needs Razer Synapse on Windows 11 version 23H2 or higher.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026What's needed and the Activate THX Spatial Audio note: only available on Windows 11 and above. Synapse section: Input Source set to Bluetooth cannot be configured in Synapse. Do Not Disturb works only when the earbuds are connected to the dongle and a mobile device at the same time.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Surround row: THX Spatial Audio only on Windows 11 version 23H2 or later.

Official licence

Not available

Not available

Battery and charging

7 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

Not available

User-replaceable earbud batteryiThe maker documents normal battery replacement by the user with its approved procedure and tools. Service or recycling disassembly does not count.

Not available

Not available

Claimed battery lifeiManufacturer maximum runtime under the stated mode, codec and spatial processing state. Name the spatial or immersive processing mode and other conditions in source notes. Omit unspecified settings. with_case false means one charge of the earbuds. true means earbuds plus case recharges.

AOzlo Sleepbuds 2

Mode	Includes case recharges	Hours (h)
ANC off	No	14

Source1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Up to 14 hours on a single charge. Footnote: Ozlo testing with Sleepbuds 2 playing streaming audio and Sleep Sounds at 50 percent volume. Results with other audio, volume, Bluetooth use and features vary. No codec is named. The case claim is stored as charging guidance because the maker gives only a number of recharges.

BRazer Hammerhead V3 HyperSpeed

Mode	Includes case recharges	Hours (h)
ANC off	No	10
ANC off	Yes	40
ANC on	No	7

Source1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text and Tech Specs: up to 10 hours from the earbuds plus 30 hours from the case, up to 40 hours total. The page does not state the ANC setting, volume or codec. The 10 hour and 40 hour rows are stored as ANC off, as in the inside-digital data sheet.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Battery row: up to 10 hours, plus 30 hours with the charging case, 40 hours in total.10Reviewbasic-tutorials.com/reviews/gadget-reviews/razer-hammerhead-v3-hyperspeed-reviewRead 15 October 2026Review spec table: up to 10 hours without ANC and up to 7 hours with ANC, 40 hours with the case. The maker page gives no ANC-on figure. The table also gives a 1.5 hour charging time that mentions wireless charging, which the master guide does not support, so that line is not used.11Spec databaseinside-digital.de/in-ear-kopfhoerer/razer-hammerhead-v3-hyperspeedRead 15 October 2026German data sheet: battery life with ANC off 10 hours.

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.

14h=CalculatedFrom Claimed battery life

10h=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

7h=CalculatedFrom Claimed battery life

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

14h=CalculatedFrom Claimed battery life

10h=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

40h=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

Not available

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

180min9Maker product pageozlo-sleepbuds-2.gorgias.help/en-US/battery-and-charging-specs-7597612Read 21 October 2026Ozlo Sleepbuds 2 help center, Battery & Charging Specs: Sleepbuds full charge approximately 3 hours. The article How long do Sleepbuds 2 take to charge gives the same figure. The Sleepbuds charge only in the Smart Case. Maker estimate, not a measurement.

Not available

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

The Smart Case holds an additional 2 to 3 charges for the earbuds. The maker gives no total runtime with the case.1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Battery section: the Smart Case holds an additional 2-3 charges. SoundGuys measured roughly three to four recharges.5Reviewsoundguys.com/ozlo-sleepbuds-2-review-161143Read 15 October 2026Review: after streaming for eight hours about 30 percent was left, and the case adds roughly three to four full recharges.

The master guide says a depleted battery is fully charged in approximately 2 hours. It advises charging with the supplied cable from a computer USB port and avoiding fast chargers or wall adapters. The guide does not separate the earbuds and the case.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Getting started, Charge your devices: connect the charging case to a computer USB port with the supplied cable, avoid fast chargers and wall adapters, and a depleted battery is fully charged in approximately 2 hours. The guide does not say whether this is the earbuds, the case or both. A review table that gives 1.5 hours is not used.

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

Not available

Not available

Earbud playback after quick chargeiEarbuds-only runtime after quick_charge_min of charging. A claimed case-inclusive total does not qualify. ANC, codec and volume conditions belong in the source note.

Not available

Not available

Charging case

3 of 10 differ

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

Not available

Not available

User-replaceable case batteryiThe maker documents normal case battery replacement by the user with its approved procedure and tools. Service or recycling disassembly does not count.

Not available

Not available

Case charging port

USB-C1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Charges via USB-C. The charging cable is in the box.

USB-C2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026What's inside lists a USB Type C charge/data port on the charging case.9Reviewcgmagonline.com/review/razer-hammerhead-v3-hyperspeed-earbudsRead 15 October 2026Review: the case has a single USB-C port on the bottom.

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.

150min9Maker product pageozlo-sleepbuds-2.gorgias.help/en-US/battery-and-charging-specs-7597612Read 21 October 2026Same article: Smart Case full charge about 2.5 hours under normal conditions, by USB-C. The user guide pages written for the original Sleepbuds say up to 8 hours with the Sleepbuds outside the case, so the Sleepbuds 2 help center figure is used.

Not available

Wireless charging

No1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026FAQ: Does the Smart Case support wireless charging? No.5Reviewsoundguys.com/ozlo-sleepbuds-2-review-161143Read 15 October 2026Review cons: the case charges over USB-C only and has no wireless charging.

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Screen on case

Not available

Not available

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

Not available

Yes1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page FAQ: the HyperSpeed case is both a charging case and a 2.4 GHz wireless receiver when the dongle is inside. Plugging the case into a device passes audio to the earbuds.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Connect to your earbuds, option C: the charging case with the USB Type C wireless dongle inside connects to a device over 2.4 GHz HyperSpeed Wireless.

Controls

3 of 5 differ

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

Not available

Touch1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page FAQ gesture list covers touch taps and presses on each earbud.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Function button quick reference: tap, double tap, triple tap and hold gestures on the touch sensor of each earbud.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Controls row: touch operation for play and pause, skip, calls, ANC and ambient mode, and wireless switching.

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

None4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Review, App and controls: in the app you can select the soundscape, set the in-ear alarm, adjust the volume or change the Sleep Mode. No earbud controls are described.11Maker product pageozlo-sleepbuds-2.gorgias.help/en-US/what-are-the-specific-differences-between-the-original-sleepbuds-and-sleepbuds-2-7597351Read 21 October 2026Help center comparison table, Phone-Free Controls: the original Sleepbuds need the Ozlo app. Sleepbuds 2 add a multifunction button on the Smart Case for pairing and playback control. No control on the earbuds is documented, and the maker hardware overview lists none. Volume is set in the Ozlo app. The Smart Case button has no volume function.

Touch1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page FAQ: double tap and hold for 2 seconds raises volume on the right earbud and lowers it on the left. The master guide describes it as a double tap, then hold the last tap.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Function button quick reference: double tap, then hold the last tap. Left lowers volume and right raises it.

Gestures

Not available

Tap: play or pause, Double tap right: next track, Double tap left: previous track, Double tap, then hold the last tap, right: volume up, Double tap, then hold the last tap, left: volume down, Tap and hold for 2 seconds, left: cycle between ANC on, ANC off and ambient mode, Tap and hold for 2 seconds, right: mute or unmute the microphone, Triple tap: switch between wireless modes, Triple tap, then hold the last tap for 3 seconds: restart Bluetooth pairing, Tap during a call (Bluetooth mode): accept or end a call, Double tap during a call (Bluetooth mode): reject an incoming call, end the call or switch between calls1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page FAQ touch gesture list. The master guide is preferred where they differ. The page says a 2 second press mutes the microphone on both earbuds. The guide puts mute on the right earbud and the ANC cycle on the left earbud.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Function button quick reference. Call gestures marked as only available in Bluetooth mode. The guide lists the right earbud for next track and volume up, the left for previous track and volume down. Gestures can be switched on or off in Synapse.

Remappable controls

Not available

Not available

Voice assistant

Not available

Not available

Sensors and health

3 of 9 differ

In-ear detection

Not available

Yes2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Synapse, Enhancement, Auto Pause: audio pauses when an earbud is removed and resumes when it is put back.8Reviewtechradar.com/gaming/razer-hammerhead-v3-hyperspeed-gaming-earbuds-reviewRead 15 October 2026Review: automatic pausing when the earbuds are removed from the ears.10Reviewbasic-tutorials.com/reviews/gadget-reviews/razer-hammerhead-v3-hyperspeed-reviewRead 15 October 2026Review spec table lists wear detection. The reviewer notes the sensor can trigger by mistake.

Sensors

Sleep-detecting accelerometer in the earbuds, Ambient noise detection in the Smart Case, Ambient temperature sensor in the Smart Case, Ambient light sensor in the Smart Case1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Sensors section: Smart Case button, ambient noise detection, ambient temperature sensor and ambient light sensor. Sleepbuds: sleep-detecting accelerometer.

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

Sleep tracking with Sleep Patterns, Room noise, light and temperature tracking in the Smart Case1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Sleep Patterns tracking in the Ozlo Sleep app, with environment insights from the Smart Case sensors.

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.

0 (extra small), 1 (small), 2 (medium), 3 (large)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026In the box: 4 sizes of soft silicone tips. Size names are in the hardware overview guide and the Tom's Guide review.4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Review: wing tip sizes range from 0 (smallest) to 3 (biggest), size 2 pre-loaded.6Owner's manualozlosleep.com/blogs/user-guide/hardware-overviewRead 15 October 2026Sleepbuds hardware overview guide (dated 4 August 2026): 4 different size silicone tips numbered 0 extra small, 1 small, 2 medium and 3 large. The guide is written for the Ozlo Sleepbuds family and Tom's Guide confirms sizes 0 to 3 for the Sleepbuds 2.

S, M, L2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026What's inside: S, M and L. M is pre-installed with the earbuds.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Accessories row: S, M and L. The M tips are fitted at shipping.9Reviewcgmagonline.com/review/razer-hammerhead-v3-hyperspeed-earbudsRead 15 October 2026Review: three earbud tip sizes.11Spec databaseinside-digital.de/in-ear-kopfhoerer/razer-hammerhead-v3-hyperspeedRead 15 October 2026German data sheet: S, M and L.

Ear tip materials

Silicone1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Soft silicone tips.

Silicone2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026What's inside: silicon ear-tips. The maker's word silicon means silicone.9Reviewcgmagonline.com/review/razer-hammerhead-v3-hyperspeed-earbudsRead 15 October 2026Review: the silicone ear tips are soft and comfortable.11Spec databaseinside-digital.de/in-ear-kopfhoerer/razer-hammerhead-v3-hyperspeedRead 15 October 2026German data sheet: silicone ear tips.

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

Wing tips4Reviewtomsguide.com/wellness/sleep-tech/ozlo-sleepbuds-2Read 15 October 2026Review: custom-fit soft silicone wingtips act as an anchor. Sizes run from 0 to 3, with size 2 fitted.

Not available

Ear tip fit test

Not available

Not available

Dust and water rating, buds

IPX41Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Sleepbuds offer protection against dust, sweat and light rain (IPX4). No dust rating is given, so the rating is IPX4.

IPX41Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text: IPX4 water-resistant design for the earbuds. No rating is stated for the case.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Water resistance row: IPX4.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

3 of 6 differ

Companion app

Ozlo Sleep app1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Ozlo Sleep App, iOS and Android.

Razer Audio app and Razer Synapse 41Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text: customisation in the Razer Audio App.2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026Set up for mobile: the Razer Audio app. Personalize your PC experience: Razer Synapse.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Software row: Razer Synapse for Windows and the Razer Audio App for iOS and Android.

App platforms

Android, iOS1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Ozlo Sleep App for iOS and Android. Android 12 or later, iOS 17 or later.

Android, iOS, Windows2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026What's needed: Razer Audio app on iOS 18 or Android 14 or higher, Razer Synapse on Windows 11 or higher.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Software row: Razer Synapse for Windows and the Razer Audio App for iOS and Android.

User firmware updates

Yes13Maker product pageozlosleep.com/blogs/release-notes/tagged/sleepbudsRead 21 October 2026Release notes list Sleepbuds 2 firmware 02.11.2606025 for the Smart Case, both earbuds and the Bluetooth module, with an Update with Web App button. The iOS app note mentions faster firmware update downloads. The Ozlo site also links a Sleepbuds Updater.

Not available

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.

1.6g(0.1 oz)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Tech specifications: 0.06 oz (1.6 g each), without the silicone tip.

5.6g(0.2 oz)1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Tech Specs: 5.6 g per side and 63 g system.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Body weight row: 5.6 g per earbud.

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

Width17Height11Depth12mm(0.7 × 0.4 × 0.5 in)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Tech specifications, earbuds without silicone tip: height 11 mm, width 17 mm, depth 12 mm. Axes are labelled by the maker.

Not available

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

96g(3.4 oz)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Smart Case without Sleepbuds inside: 3.5 oz (96 g).

49g(1.7 oz)6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Body weight row: charging case 49 g. Razer's own page lists 63 g for the system. The sheet does not say whether the dongle sits in the case.

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

Width78Height78Depth27mm(3.1 × 3.1 × 1.1 in)1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Smart Case: height 78 mm, width 78 mm, depth 27 mm. Axes are labelled by the maker.

Not available

Certifications

0 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

2BAGA010021L, 2BAGA01002114Regulatory filingfccid.io/2BAGA010021LRead 21 October 2026FCC grant 2BAGA010021L for the Sleepbuds earbuds, model 010021L, applicant Drowsy Digital Inc (the company named in the Ozlo site copyright), granted 2026-05-22. Product code 010021 matches the Sleepbuds 2 SKU 010021C01WW01. The first generation grant is 2BAGA010011L. The case grant 2BAGA010021 is the second entry.15Regulatory filingfccid.io/2BAGA010021Read 21 October 2026FCC grant 2BAGA010021 for the Charging Case, model 010021, applicant Drowsy Digital Inc, granted 2026-05-22. The SAR report lists a 75 x 75 x 25 mm case body. The maker states 78 x 78 x 27 mm.

Not available

Other certifications

Not available

Not available

In the box

2 of 2 differ

In the box

Sleepbuds 2 earbuds, Smart Case (charging and storage case), 4 sizes of soft silicone tips, Charging cable, Quick Start Guide1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026Included in the box: Ozlo Sleepbuds, charging and storage case, 4 sizes of soft silicone tips, charging cable.12Owner's manualozlosleep.com/blogs/blogs/sleepbuds-2-guideRead 21 October 2026Section 1 Unboxing: Sleepbuds 2, Smart Charging Case, USB-C charging cable, four sizes of silicone ear tips and Quick Start Guide.

Razer Hammerhead V3 HyperSpeed, Charging case with USB Type C wireless dongle, USB Type C cable, Silicon ear-tips in 3 sizes (S, M*, L). M is pre-installed with the earbuds, Important Product Information Guide2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026What's inside: the earbuds, the charging case with USB Type C wireless dongle, a USB Type C cable, silicon ear-tips in 3 sizes (S, M*, L) with M pre-installed, and the Important Product Information Guide.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Accessories row: charging case, USB-C dongle, ear tips S, M and L, USB-C cable and the important product guide. The M tips ship on the earbuds.11Spec databaseinside-digital.de/in-ear-kopfhoerer/razer-hammerhead-v3-hyperspeedRead 15 October 2026German data sheet: charging case, USB-C wireless dongle (2.4 GHz), USB-C charging cable and silicone ear tips in S, M and L.

Cables included

AOzlo Sleepbuds 2

Type	Count
USB-C	1

Source12Owner's manualozlosleep.com/blogs/blogs/sleepbuds-2-guideRead 21 October 2026Section 1 Unboxing: one USB-C charging cable. No length or other connector is stated.

BRazer Hammerhead V3 HyperSpeed

Type	Length (m)	Count
USB-C cable	0.42	1

Source2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026What's inside: one USB Type C cable. The 42 cm length comes from the Tech Specs and the Japan spec sheet.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Cable length row: 420 mm. The Razer page lists 42 cm. CGMagazine calls it a 16.5 inch USB-C cable.9Reviewcgmagonline.com/review/razer-hammerhead-v3-hyperspeed-earbudsRead 15 October 2026Review: a 16.5 inch USB-C cable for charging and communication. That is about 42 cm.

Links

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Product page

ozlosleep.com/products/sleepbuds1Maker product pageozlosleep.com/products/sleepbudsRead 15 October 2026

www.razer.com/mobile-earphones/razer-hammerhead-v3-hyperspeed1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026

Spec sheet

Not available

prtimes.jp/a6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Razer Japan spec sheet for the Hammerhead V3 HyperSpeed and V3 X, published with the Japanese launch release. The sheet is in Japanese.

Manual

ozlosleep.com/blogs/blogs/sleepbuds-2-guide12Owner's manualozlosleep.com/blogs/blogs/sleepbuds-2-guideRead 21 October 2026Ozlo Complete Guide for Sleepbuds 2: unboxing, setup, Smart Case button, sleep modes and care. No PDF manual was found.

dl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdf2Owner's manualdl.razerzone.com/master-guides/RazerSynapse4/HAMMERHEADV3HYPERSPEED-00002657-en.pdfRead 15 October 2026English master guide for the Hammerhead V3 HyperSpeed from the Razer download server.

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.

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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 pageozlosleep.com/products/sleepbudsRead 15 October 2026FAQ: Ozlo Sleepbuds come with a 1-year warranty. In the EU and UK, that is extended to two years. The US term is stored.

2years1Maker product pagerazer.com/mobile-earphones/razer-hammerhead-v3-hyperspeedRead 15 October 2026Page text: up to 2 years of warranty. The Japan spec sheet gives 24 months.6Maker spec sheet (PDF)prtimes.jp/aRead 15 October 2026Warranty row: 24 months for Japan.

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