Earbuds / Compare

Ozlo Sleepbuds 2 vs Sennheiser MOMENTUM True Wireless 5

A

Product A: Ozlo

Sleepbuds 2

52 of 166 known

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B

Product B: Sennheiser

MOMENTUM True Wireless 5

91 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

AOzlo Sleepbuds 2

BSennheiser MOMENTUM True Wireless 5

General

6 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.

Not available

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.

700350, MTW5, MTW5 R, MTW5 L, MTW5 C1Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026Original Graphite standard earbuds/case bundle. Maker product variant data identifies Graphite SKU 700350. Manual title identifies marketed system MTW5 and its left/right/case regulatory component names.

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.

Not available

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.

20 August 20262Press releasenewsroom.sennheiser.com/introducing-sennheiser-momentum-true-wireless-5-the-flagship-momentum-experience-in-your-pocketRead 8 October 2026

Status

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

Available1Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026

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

Not available

Sennheiser MOMENTUM True Wireless 48Reviewwhathifi.com/headphones/wireless-earbuds/sennheisers-flagship-earbuds-are-back-to-battle-bose-and-sony-and-they-could-have-an-ace-up-their-sleeveRead 23 October 2026What Hi-Fi calls the MOMENTUM True Wireless 5 the sequel to the MOMENTUM True Wireless 4.

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.

$299.952Press releasenewsroom.sennheiser.com/introducing-sennheiser-momentum-true-wireless-5-the-flagship-momentum-experience-in-your-pocketRead 8 October 2026Maker explicitly states USD 299.95 launch MSRP. It is the standard earbuds/case bundle, not the optional BTD 700 package.

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.

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.

Not available

ColoursiThe maker's own colour names

Not available

Graphite, Cream, Copper, Denim, Lavender2Press releasenewsroom.sennheiser.com/introducing-sennheiser-momentum-true-wireless-5-the-flagship-momentum-experience-in-your-pocketRead 8 October 2026Maker enumerates five unique launch colours. The English release repeats Graphite once in its prose list. The five distinct colour names match the product variants.

Segment

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

Music1Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026

Design

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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-ear3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

Stemless3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

Not available

Either bud3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 28 says each earbud can be used independently. Brief interruption may occur when putting the other bud into the case.

RGB lighting

Not available

Not available

Drivers and sound

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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.

BSennheiser MOMENTUM True Wireless 5

Type	Role	Diameter (mm)	Count per earbud
Dynamic	Full range	7	1

Source3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Pages 44-45 and exact maker FAQ identify one 7 mm TrueResponse dynamic transducer per earbud. Microphones are not counted as drivers.

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.

Dynamic3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

Not available

7mm=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

1=CalculatedFrom Drivers per bud

Diaphragm material

Not available

Not available

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

Not available

Min5 HzMax21 kHz3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

Impedance

Not available

Not available

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

Not available

107dB3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 44 gives 107 dB SPL at 1 kHz for 1 mW. This is a maker claim, not an independent measurement.

Sensitivity reference

Not available

Per 1 mW3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

96kHz3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Pages 34-35: aptX Adaptive high-resolution mode requires compatible source and high-resolution content. 96 kHz/24-bit is lossy. Separate aptX Lossless mode is 44.1 kHz/16-bit, not lossless 96 kHz.

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

24bits3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Same aptX Adaptive high-resolution host/content requirements. It does not apply to ordinary AAC playback on an iPhone.

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

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

Onboard EQ

Not available

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 33 explicitly states a selected EQ preset is stored in the earbuds and works without the app, including with another Bluetooth source.

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

Not available

83Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

Not available

Volume limit

Not available

Not available

Spatial audio

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

Not available

Dolby Atmos3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

Not available

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Pages 33-34: Dolby Head Tracking responds to movement while sound remains anchored. Activate through Smart Control Plus. Full Atmos effect requires supported content.

Noise cancelling

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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 pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026

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

Not available

Hybrid1Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026

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

42Press releasenewsroom.sennheiser.com/introducing-sennheiser-momentum-true-wireless-5-the-flagship-momentum-experience-in-your-pocketRead 8 October 2026Maker describes its dedicated four-microphone ANC array across the product, separately from six physical microphones used for voice capture.

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

Not available

Yes1Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026

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.

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

Adjustable transparency

Not available

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Pages 29-31 document Adaptive Anti-Wind processing. It is distinct from conversation-triggered attenuation, which is not inferred.

Measured

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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

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

Not available

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

AOzlo Sleepbuds 2

Not available

BSennheiser MOMENTUM True Wireless 5

ANC	Hours (h)
Yes	6.28

Source7Measurementsoundguys.com/sennheiser-momentum-true-wireless-5-review-161261Read 8 October 2026Exact model supplied by the maker and tested for two weeks. Charged to 100%, level-matched test track with ANC on ended after 6 h 17 min when the right earbud stopped, stored as 6.28 hours. Product review does not identify firmware, codec or fitted 72/87 mAh battery, so those conditions are not inferred. This is earbud-only runtime.

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

Not available

6.28h=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

7 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.

62Press releasenewsroom.sennheiser.com/introducing-sennheiser-momentum-true-wireless-5-the-flagship-momentum-experience-in-your-pocketRead 8 October 2026Maker explicitly separates six physical microphones from two bone-conduction voice accelerometers across the pair. Sensors are excluded from physical voice microphone count.

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.

62Press releasenewsroom.sennheiser.com/introducing-sennheiser-momentum-true-wireless-5-the-flagship-momentum-experience-in-your-pocketRead 8 October 2026Six physical microphones across both earbuds. The eight-system-sensor headline includes two non-microphone voice accelerometers.

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

Yes2Press releasenewsroom.sennheiser.com/introducing-sennheiser-momentum-true-wireless-5-the-flagship-momentum-experience-in-your-pocketRead 8 October 2026Maker explicitly identifies dedicated bone-conduction voice accelerometers, beyond merely describing a generic motion sensor. They are separate from air-pressure microphones.

Mic noise reduction

Not available

AI1Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026

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

Not available

Super wideband5Maker product pagesupport.sennheiser-hearing.com/hc/en-us/articles/38498625385885-MOMENTUM-True-Wireless-5-OperationRead 8 October 2026Maker explicitly supports super-wideband calling, but the earbuds, source device and call app must all support the compatible Bluetooth call mode. Otherwise the call falls back. This is distinct from playback sample rate.

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

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 28 documents one tap on either bud during a call to mute/unmute microphones.

SidetoneiHear your own voice in calls

Not available

Yes7Measurementsoundguys.com/sennheiser-momentum-true-wireless-5-review-161261Read 8 October 2026Reviewer explicitly describes adjustable sidetone settings in the app. It is a call feature, not transparency control generally.

Connectivity

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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.

Bluetooth3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

Bluetooth

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

6.03Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

Bluetooth codecs

Not available

SBC, AAC, aptX, aptX Adaptive, aptX Lossless3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

A2DP, AVRCP, HFP3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

No4Maker product pagesupport.sennheiser-hearing.com/hc/en-us/articles/38492910057245-MOMENTUM-True-Wireless-5-Before-you-startRead 8 October 2026Current exact maker FAQ explicitly says LC3/LE Audio support will be enabled in a future firmware update. No future capability is represented as currently available.

Auracast

Not available

No4Maker product pagesupport.sennheiser-hearing.com/hc/en-us/articles/38492910057245-MOMENTUM-True-Wireless-5-Before-you-startRead 8 October 2026Same current maker FAQ future-firmware condition. Current product review also says it is not yet enabled.

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.

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

Not available

23Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

64Maker product pagesupport.sennheiser-hearing.com/hc/en-us/articles/38492910057245-MOMENTUM-True-Wireless-5-Before-you-startRead 8 October 2026Exact maker FAQ: six saved Bluetooth devices, separate from two concurrent connections.

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Not available

Google Fast Pair4Maker product pagesupport.sennheiser-hearing.com/hc/en-us/articles/38492910057245-MOMENTUM-True-Wireless-5-Before-you-startRead 8 October 2026

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

Not available

Compatibility

4 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.

Android, iOS, Windows, macOS4Maker product pagesupport.sennheiser-hearing.com/hc/en-us/articles/38492910057245-MOMENTUM-True-Wireless-5-Before-you-startRead 8 October 2026FAQ explicitly supports native iPhone/Android Bluetooth and optional BTD 700 Bluetooth transmitter operation with Windows/macOS/Android/iOS USB sources. Each platform is supported by a documented path, not by app availability alone.

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

BSennheiser MOMENTUM True Wireless 5

Platform	Connection
Android	Bluetooth
iOS	Bluetooth
Windows	Bluetooth
macOS	Bluetooth

Source4Maker product pagesupport.sennheiser-hearing.com/hc/en-us/articles/38492910057245-MOMENTUM-True-Wireless-5-Before-you-startRead 8 October 2026The audio reaching the earbuds is Bluetooth, including when a USB source uses the optional BTD 700 transmitter. Per-platform microphone operation is not separately asserted.

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.

BSennheiser MOMENTUM True Wireless 5

Feature	Needs
aptX Adaptive high-resolution playback	Compatible aptX Adaptive source and high-resolution audio. Select 24-bit/96 kHz in Smart Control Plus. Native iPhone Bluetooth uses AAC or SBC.
aptX Lossless playback	Compatible aptX Lossless source. Separate 16-bit/44.1 kHz lossless mode, not 96 kHz lossless.
LE Audio and Auracast	Maker FAQ says future firmware will enable these hardware capabilities. No released enabling firmware is proven as of this research.
Bluetooth multipoint	Enable in Smart Control Plus. Two concurrent source devices, six saved pairings. Only one device plays audio at a time.
High-resolution playback from USB sources	Optional Sennheiser BTD 700 Bluetooth transmitter on compatible Android, iOS/iPadOS, Windows or macOS USB ports. This is a Bluetooth audio path, not direct earbud USB or proprietary 2.4 GHz audio.
Sound Personalization	Smart Control Plus and a Sennheiser account.

Source4Maker product pagesupport.sennheiser-hearing.com/hc/en-us/articles/38492910057245-MOMENTUM-True-Wireless-5-Before-you-startRead 8 October 2026Exact maker codec and connectivity FAQ plus manual pages 33-35. The profile and account restrictions are not omitted.

Official licence

Not available

Made for iPhone, Works with Android4Maker product pagesupport.sennheiser-hearing.com/hc/en-us/articles/38492910057245-MOMENTUM-True-Wireless-5-Before-you-startRead 8 October 2026

Battery and charging

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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

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Pages 38-40 document normal replacement with a PH000 screwdriver (not included) and supplied earbud opening tool. The compatible BA 501 set is available in selected markets. The installed earbud cell may be 72 mAh at 3.8 V or 87 mAh at 3.85 V, so battery_capacity_mah is omitted.

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.

BSennheiser MOMENTUM True Wireless 5

Mode	Includes case recharges	Hours (h)
ANC off	No	12
ANC on	No	6
Not available	Yes	40

Source3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 44 maker claims: earbuds 12 h ANC off and 6 h ANC on. Total including case is 40 h, with ANC state not separately identified in the manual. Test source is an iPhone at mid volume. Actual codec, firmware and Atmos state are not stated and remain omitted.

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

12h=CalculatedFrom Claimed battery life

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

Not available

6h=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

12h=CalculatedFrom Claimed battery life

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

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

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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.

Not available

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

Not available

8min3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

1h3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 14: eight minutes charging gives approximately one hour of playback. ANC, codec, test volume and source are not separately specified. The separate 90-minute complete charging cycle includes both case and earbuds, so neither single-component full charge field is populated.

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.

Not available

760mAh1Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026Maker nominal case cell capacity 760 mAh. Manual gives 3.7 V and 2.812 Wh for the installed case pack, separately from earbuds and charging output.

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

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 40 documents the case bottom screw, sliding battery cover and replacement procedure with a PH000 screwdriver. Compatible BA 502 case pack is separately specified.

Case charging port

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

USB-C3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

Not available

Qi3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Manual calls the case Qi-compatible and references Qi version 2.1. This is not evidence of Qi2 magnetic alignment, Qi2_2, or a separate numeric wireless power ceiling.

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

Not available

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

Not available

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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

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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.

Not available

Touch3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

Touch3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

Gestures

Not available

Single tap, Double tap, Touch and hold3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

Remappable controls

Not available

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 28: touch assignments can be customized or disabled. Basic call controls cannot all be reassigned.

Voice assistant

Not available

Apple Siri, Google Assistant3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

Sensors and health

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In-ear detection

Not available

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

Infrared proximity sensor, Bone-conduction voice accelerometers3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

Yes7Measurementsoundguys.com/sennheiser-momentum-true-wireless-5-review-161261Read 8 October 2026Reviewer explicitly identifies a hearing-test personalization feature requiring a Sennheiser account. It is not claimed as a medical diagnostic hearing test.

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

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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.

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.

XS, S, M, L3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 6 includes all four silicone tip sizes. The review table that lists only S/M/L does not override the manual.

Ear tip materials

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

Silicone3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

None7Measurementsoundguys.com/sennheiser-momentum-true-wireless-5-review-161261Read 8 October 2026Review explicitly lists no stabilizer. Silicone ear tips are not wing tips or stability bands.

Ear tip fit test

Not available

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

IP541Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026

Dust and water rating, case

Not available

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Water resistance depth

Not available

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Software

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Companion app

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

Sennheiser Smart Control Plus3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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, iOS3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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.

Yes3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

Finding network

Not available

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Precision findingiUWB in the case

Not available

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Live translation

Not available

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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.

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.

7g(0.2 oz)3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 45 gives approximately 7 g per earbud. Its 55 g empty case and 69 g combined mass are consistent. It takes precedence over the live US product page erroneous 62 g combined figure.

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).

55g(1.9 oz)3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 45 approximately 55 g empty case, separately from two earbuds. No combined mass is used as the case mass.

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.

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Certifications

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

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Communication certifications

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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.

2A3ULMTW56Regulatory filingcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/1785221532876-MTW5_CS_599914_20260423_A01_INT.pdfRead 8 October 2026Original maker Compliance Information table identifies this shared US identifier for left and right MTW5 earbuds. The charging case has a dash rather than a published FCC ID and is not assigned this earbud identifier.

Other certifications

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In the box

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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.

MOMENTUM True Wireless 5 earbuds, Charging case, USB-C charging cable, Silicone ear tips (XS, S, M, L), Special earbud opening tool, Quick guide, Safety guide, Compliance sheet, Battery information sheet3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Page 6 exact manual package list. PH000 screwdriver is required for batteries but is not supplied. Optional Bluetooth adapters are not included.

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.

BSennheiser MOMENTUM True Wireless 5

Type	Length (m)	Count
USB-C to USB-C charging cable	0.4	1

Source3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026Manual page 6 identifies the supplied USB cable with two USB-C connectors and approximate length 0.4 m. Page 15 confirms both connector ends. Stored length is the published nominal figure, not a measured cable length.

Links

Not compared

Product page

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

us.sennheiser-hearing.com/products/momentum-true-wireless-51Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026

Spec sheet

Not available

cdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdf1Maker product pageus.sennheiser-hearing.com/products/momentum-true-wireless-5Read 8 October 2026Original maker manual includes exact model specifications on pages 44-46. Bud capacity is left unknown because it explicitly allows both 72 mAh and 87 mAh packs.

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.

cdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdf3Owner's manualcdn.sennheiser-hearing.com/product-documents/product-downloads/momentum-true-wireless-5/instruction-manual/MTW5_Manual_EN.pdfRead 8 October 2026

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

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Warranty

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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.

Not available

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