Earbuds / Compare

JBL Endurance Peak 4 vs Ozlo Sleepbuds 2

A

Product A: JBL

Endurance Peak 4

63 of 166 known

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B

Product B: Ozlo

Sleepbuds 2

52 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

AJBL Endurance Peak 4

BOzlo Sleepbuds 2

General

6 of 8 differ

Series

Endurance2Maker product pagejblonlinestore.com/products/jbl-endurance-peak-4Read 16 October 2026JBL Endurance range of sport earbuds.

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.

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

JBLENDUPEAK4BLKGAM, JBLENDUPEAK4WHTAM, JBLENDUPEAK4PURAM3Retailer pageabt.com/JBL-Endurance-Peak-4-True-Wireless-Noise-Cancelling-Sport-Earbuds-in-Black-JBLENDUPEAK4BLKGAM/p/240453.htmlRead 16 October 2026Abt model numbers for Black (JBLENDUPEAK4BLKGAM), White (JBLENDUPEAK4WHTAM) and Purple (JBLENDUPEAK4PURAM). Other regions use codes such as JBLENDUPEAK4BLKL and JBLENDUPEAK4WHT.

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

GTIN / EAN

0500364158283Retailer pageabt.com/JBL-Endurance-Peak-4-True-Wireless-Noise-Cancelling-Sport-Earbuds-in-Black-JBLENDUPEAK4BLKGAM/p/240453.htmlRead 16 October 2026UPC 050036415828 for the Black model JBLENDUPEAK4BLKGAM.

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.

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

31 October 20254Press articlephileweb.com/sp/news/d-av/202510/31/63740.htmlRead 16 October 2026PHILE WEB article dated 2025-10-31 on the Japanese launch. It is the earliest coverage found.

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.

Status

Available3Retailer pageabt.com/JBL-Endurance-Peak-4-True-Wireless-Noise-Cancelling-Sport-Earbuds-in-Black-JBLENDUPEAK4BLKGAM/p/240453.htmlRead 16 October 2026Add to Cart button at $129.95 on 2026-10-16.

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

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

Not available

Not available

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

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.

$129.956Press articleandroidheadlines.com/2026/01/jbl-unveils-new-tune-and-endurance-headphones-at-ces-2026.htmlRead 16 October 2026CES 2026 coverage of the JBL release dated 2026-01-05: Endurance Peak 4 at $129.95, to launch in January. US price excluding tax. FoneArena gives the same figure.

$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.

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

Not available

Not available

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

Not available

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.

ColoursiThe maker's own colour names

Black & Grey, Black & Lime, Blue, Purple, White2Maker product pagejblonlinestore.com/products/jbl-endurance-peak-4Read 16 October 2026Colour options on the JBL Singapore store, verbatim: Black & Grey, Black & Lime, Blue, Purple, White. Abt lists Black, Purple and White for the US models.

Not available

Segment

Sport1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Title of the sheet: True Wireless Noise Cancelling Sport Earbuds.

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

Design

1 of 4 differ

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

In-ear1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026The sheet lists 3 sizes of eartips, so the earbuds seal the ear canal. Abt lists the type as open-ear, which is read as a retailer error.

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.

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

Ear hook1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: the liquid silicone ear hook with memory wire holds the earbud.

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.

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

Not available

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.

AJBL Endurance Peak 4

Type	Diameter (mm)	Count per earbud
Dynamic	10	1

Source1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: Driver size 10 mm dynamic driver. The text speaks of one driver, so one per earbud is stored.

BOzlo 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.

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

Dynamic1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026

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.

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

10mm=CalculatedFrom Drivers per bud

Not available

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

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.

Min20 HzMax20 kHz1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: Frequency response 20 Hz - 20 kHz. No conditions are stated.

Not available

Impedance

16Ω1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: Impedance 16 ohm.

Not available

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

108dB1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: Sensitivity 108 dB SPL@1 kHz. The electrical reference is not named, so no reference is stored.

Not available

Sensitivity reference

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Personalised soundiA profile from a hearing test or ear scan

Yes1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: customize your sound with Personi-fi 3.0, a quick hearing test that adapts the audio.

Not available

Onboard EQ

Not available

Not available

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

Not available

Not available

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

Not available

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.

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.

JBL Spatial Sound1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: JBL Pure Bass with Spatial Sound. Conditions are not stated.

Not available

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

Not available

Not available

Noise cancelling

7 of 11 differ

Active noise cancelling

Yes1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: Adaptive Noise Cancelling with Smart Ambient.

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.

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

Hybrid4Press articlephileweb.com/sp/news/d-av/202510/31/63740.htmlRead 16 October 2026Described as hybrid noise cancelling. AppBank repeats this. The JBL sheet only says four noise-sensing mics.5Press articleappbank.net/2025/10/31/goods-books/2856455.phpRead 16 October 2026Title and text call it a hybrid noise cancelling true wireless earphone and the first ANC in the Endurance series.

Not available

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

41Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: four noise-sensing mics. The sheet does not say how many sit in each earbud.

Not available

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

Yes1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: Adaptive Noise Cancelling. The sheet does not explain what it adapts to.

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

Yes1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: Smart Ambient and Ambient Aware let in the surroundings.

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.

Adjustable transparency

Yes1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: use the JBL Headphones app to set your custom levels.

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.

Yes1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: the windproof design reduces distortion from air friction on calls. This is a physical design feature, not selectable processing.

Not available

Measured

None of 23 known

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

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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

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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

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.

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

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

Not available

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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.

61Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: 6 mics for calls, 3 per earbud. The sheet does not say whether the four ANC mics are part of the six, so no total is stored.

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.

All microphones in both earbudsiEvery physical microphone across the pair, including call and ANC microphones. Shared microphones count once. Excludes the charging case and voice vibration sensors.

Not available

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.

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

DSP1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: the three mics per ear suppress noise and a beamforming algorithm reduces ambient noise. No AI is named.

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

Not available

SidetoneiHear your own voice in calls

Not available

Not available

Connectivity

7 of 18 differ

Chip

Not available

Not available

Connections

Bluetooth3Retailer pageabt.com/JBL-Endurance-Peak-4-True-Wireless-Noise-Cancelling-Sport-Earbuds-in-Black-JBLENDUPEAK4BLKGAM/p/240453.htmlRead 16 October 2026Abt specification: Connectivity Bluetooth, true wireless, NFC no. No other connection is listed.

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

Bluetooth

5.41Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: Bluetooth version (Earbud) 5.4. Major HiFi says 5.3, and the maker sheet is used.

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

Bluetooth codecs

SBC, AAC4Press articlephileweb.com/sp/news/d-av/202510/31/63740.htmlRead 16 October 2026Spec list: SBC and AAC. Major HiFi gives the same two codecs.

Not available

Bluetooth profiles

A2DP V1.4, AVRCP V1.6.3, HFP V1.91Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: Bluetooth profile version A2DP V1.4, AVRCP V1.6.3, HFP V1.9.

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

LE Audio

Not available

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.

Auracast

Not available

Not available

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

Yes1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: pair the earbuds with two Bluetooth devices and switch between them.

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.

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

21Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: two Bluetooth devices.

Not available

Multipoint with LDACiMany buds turn multipoint off on LDAC

Not available

Not available

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

Not available

Not available

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Google Fast Pair1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: Fast Pair enabled by Google.

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

Not available

Receiver connector

Not available

Not available

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

Not available

Not available

Latency

None of 3 known

Low latency mode

Not available

Not available

Claimed latency

Not available

Not available

Lowest claimed latency

Not available

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Compatibility

2 of 4 differ

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

Not available

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.

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

Not available

Not available

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

AJBL Endurance Peak 4

Not available

BOzlo 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.

Official licence

Not available

Not available

Battery and charging

12 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.

58mAh1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: earbud battery type Lithium-ion 58 mAh / 3.85 V. The row is read as one earbud.

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.

AJBL Endurance Peak 4

Mode	Includes case recharges	Hours (h)
ANC off	No	12
ANC on	No	8
ANC off	Yes	48
ANC on	Yes	32
Call	No	6

Source1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications and Features: music playtime with BT on is up to 12 hours with ANC off and up to 8 hours with ANC on. Totals with the case are up to 48 hours with ANC off (12 hours plus three full charges) and 32 hours with ANC on (8 hours plus 24 hours). Talk time is up to 6 hours with ANC off and up to 5 hours with ANC on, and only the ANC off figure is stored. No codec or volume is stated.

BOzlo 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.

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.

12h=CalculatedFrom Claimed battery life

14h=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.

8h=CalculatedFrom Claimed battery life

Not available

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

12h=CalculatedFrom Claimed battery life

14h=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.

48h=CalculatedFrom Claimed battery life

Not available

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

32h=CalculatedFrom Claimed battery life

Not available

Talk time (claimed)

6h=CalculatedFrom Claimed battery life

Not available

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

Not available

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.

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 spec sheet gives a charging time of 2 hours from empty and does not say whether this is the earbuds, the case or both.1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: Charging time 2 hrs from empty. Power supply 5V/1A. The cable is not in the box.

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.

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

10min1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: 10 minutes gets you four more hours, with the note that the charging cable is not included.

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.

4h1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: 10 minutes gets you four more hours of playback. ANC state, codec and volume are not stated, and the sheet does not say whether it is earbuds only.

Not available

Charging case

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

580mAh1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: charging case battery type Lithium-ion 580 mAh / 3.85 V.

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-C3Retailer pageabt.com/JBL-Endurance-Peak-4-True-Wireless-Noise-Cancelling-Sport-Earbuds-in-Black-JBLENDUPEAK4BLKGAM/p/240453.htmlRead 16 October 2026Abt specification: Charging interface USB-C.

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

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

Not available

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.

Wireless charging

Not available

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.

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

Screen on case

Not available

Not available

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

Not available

Not available

Controls

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

Touch8Reviewtheruntesters.com/jbl-endurance-peak-4-reviewRead 16 October 2026Review text: tap and swipe controls on a fairly large surface. No gesture list is given, so only touch is stored.

Not available

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

Not available

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.

Gestures

Not available

Not available

Remappable controls

Yes7Reviewmajorhifi.comRead 16 October 2026Same review: the JBL Headphones app offers control customization.

Not available

Voice assistant

Not available

Not available

Sensors and health

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In-ear detection

Not available

Not available

Sensors

Not available

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.

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.

Yes1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: Personi-fi 3.0 includes a quick hearing test. It is a sound personalisation test and carries no medical clearance.

Not available

Hearing protectioniLimits sudden loud sounds

Not available

Not available

Health features

Not available

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.

Fit and durability

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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

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.

Ear tip materials

Not available

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

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

Ear hook1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: TwistLock design with OvalTubes and a liquid silicone ear hook with memory wire. An Enhancer is also in the box and is not stored as a separate stabiliser.

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.

Ear tip fit test

Not available

Not available

Dust and water rating, buds

IP681Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: IP Rating (Earbuds) IP68.

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.

Dust and water rating, case

IPX21Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: IP Rating (Charging Case) IPX2.

Not available

Water resistance depth

Not available

Not available

Software

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Companion app

JBL Headphones1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: Customize on the go with the JBL Headphones app.

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

App platforms

Not available

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

User firmware updates

Yes7Reviewmajorhifi.comRead 16 October 2026Review of 2026-04-13: the JBL Headphones app offers 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.

Finding network

Google Find Hub1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Features: Google Finder locates misplaced earbuds with Android devices. Japanese coverage names it Google Find Hub.

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Not available

Dimensions and weight

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Weight per budiMass of one earbud. Tip size and approximate values belong in the source note. Do not store pair or case-inclusive mass.

10.5g(0.4 oz)1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: Earbud 10.5 g per pc (21 g combined). Japanese coverage says the weight includes ear tips and the enhancer.

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.

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

Not available

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.

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

80.5g(2.8 oz)1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026Technical Specifications: Charging case 80.5 g.

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

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

Not available

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.

Certifications

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Hi-Res AudioiThe Japan Audio Society logos. Hi-Res Audio Wireless is also written Hi-Res Wireless Audio.

Not available

Not available

Communication certifications

Not available

Not available

FCC IDs

Not available

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.

Other certifications

Not available

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In the box

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In the box

JBL Endurance Peak 4 headphones, Charging case, Enhancer, 3 sizes of eartips, Warranty / Warning sheet, QSG / Safety Sheet1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026What's in the Box, verbatim. The charging cable is not listed.

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.

Cables included

AJBL Endurance Peak 4

Not available

BOzlo 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.

Links

Not compared

Product page

www.jblonlinestore.com/products/jbl-endurance-peak-42Maker product pagejblonlinestore.com/products/jbl-endurance-peak-4Read 16 October 2026Official JBL Singapore online store. It repeats the same specification table as the JBL spec sheet. The regional jbl.com pages were not opened.

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

Spec sheet

content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdf1Maker spec sheet (PDF)content.abt.com/documents/178303/jbl-Noise-cancelling-earbuds-JBLENDUPEAK4BLKGAM-spec-sheet.pdfRead 16 October 2026The two-page JBL spec sheet, copyright Harman 2025, hosted by the retailer Abt. The Serbian shop Tehnoteka hosts an identical copy for the white model.

Not available

Manual

Not available

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.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

0 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year3Retailer pageabt.com/JBL-Endurance-Peak-4-True-Wireless-Noise-Cancelling-Sport-Earbuds-in-Black-JBLENDUPEAK4BLKGAM/p/240453.htmlRead 16 October 2026Abt: 1-year parts, 1-year labor. US retailer listing.

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.

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