Earbuds / Compare

OnePlus Buds 4 vs Technics EAH-AZ100

A

Product A: OnePlus

Buds 4

82 of 166 known

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B

Product B: Technics

EAH-AZ100

83 of 166 known

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All 166 fields

Every value links to where we found it.

Only differences

AOnePlus Buds 4

BTechnics EAH-AZ100

General

5 of 8 differ

Series

Not available

Not available

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

E513A4Owner's manualoneplus.com/content/dam/oneplus/2024/eu/store/safety_guide/OnePlus_Buds_4_Safety_Guide.pdfRead 8 October 2026Original maker Safety and Warranty booklet, English page 2, explicitly names OnePlus Buds 4 and E513A. Regulatory radio power and SAR do not establish audio specifications.

EAH-AZ100, EAH-AZ100-K, EAH-AZ100-S, EAH-AZ100-N, EAH-AZ100-A1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Spec table model suffixes -N, -A, -K and -S for the EAH-AZ100.2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Owner's manual model EAH-AZ100.3Maker product pagehelp.na.panasonic.com/answers/what-features-make-eah-az100-uniqueRead 13 October 2026Colour options listed as EAH-AZ100-K and EAH-AZ100-S.

GTIN / EAN

Not available

Not available

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

Not available

7 January 20254Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026Spec table lists the product release date as 7 January 2025. The maker announced the product at CES 2025 on the same date.

Status

Available1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

Available4Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026The product page links a current Amazon US listing.6Reviewtechradar.com/audio/earbuds-airpods/technics-eah-az100-reviewRead 13 October 2026Current Amazon, Best Buy, Newegg and Walmart prices are listed.

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

OnePlus Buds 37Reviewtechradar.com/audio/earbuds-airpods/oneplus-buds-4-reviewRead 23 October 2026TechRadar's review says the OnePlus Buds 4 are the successors to last year's OnePlus Buds 3.

Technics EAH-AZ806Reviewtechradar.com/audio/earbuds-airpods/technics-eah-az100-reviewRead 13 October 2026TechRadar's review calls the EAH-AZ80 the model the EAH-AZ100 replaces.9Reviewwhathifi.com/news/technics-celebrates-60th-anniversary-with-az100-flagship-wireless-earbudsRead 23 October 2026What Hi-Fi calls the EAH-AZ80 the previous flagship earbuds that the EAH-AZ100 updates.

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.

Not available

$299.994Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026Spec table lists an original price and MSRP of $299.99.

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

€2995Reviewt3.com/tech/headphones/technics-az100-reviewRead 13 October 2026Launch prices listed as 259 GBP, 299 USD and 299 EUR.

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, EU5Reviewt3.com/tech/headphones/technics-az100-reviewRead 13 October 2026US from the USD price and EU from the euro price.

ColoursiThe maker's own colour names

Storm Gray, Zen Green1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

Black, Silver, Champagne Gold, Blue1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Spec table colour columns translated from Chinese: champagne gold (-N), blue (-A), black (-K) and silver (-S).

Segment

Music2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Music1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Technics premium music earphones. The catalog presents them for music listening.

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-ear3Owner's manualmedia.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20ManualRead 8 October 2026

In-ear4Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026Nozzles couple to bespoke silicone ear tips that seal in the ear canal.

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

Stem3Owner's manualmedia.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20ManualRead 8 October 2026

Stemless4Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026Reviewer describes rectangular nozzles and a circular back housing with no stalk.

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

Not available

Either bud1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

RGB lighting

Not available

Not available

Drivers and sound

11 of 17 differ

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

AOnePlus Buds 4

Role	Diameter (mm)	Count per earbud
Woofer	11	1
Tweeter	6	1

Source1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Maker explicitly publishes one 11 mm woofer and one 6 mm tweeter per earbud. Transducer technology is not explicitly stated in the selected source, so row type and driver_type remain unknown.

BTechnics EAH-AZ100

Type	Role	Diameter (mm)	Count per earbud
Dynamic	Full range	10	1

Source1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 202610 mm driver in the spec table. Aluminium diaphragm with magnetic fluid driver.

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

Not available

Dynamic1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

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

11mm=CalculatedFrom Drivers per bud

10mm=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.

2=CalculatedFrom Drivers per bud

1=CalculatedFrom Drivers per bud

Diaphragm material

Woofer: 30-layer ceramic-metal diaphragm. Tweeter: flat diaphragm.2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026Maker illustrated driver descriptions explicitly assign ceramic-metal diaphragm to the woofer and flat diaphragm to the tweeter. Flat does not by itself establish planar-magnetic technology.

Free-edge aluminium diaphragm1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

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

Min15 HzMax40 kHz1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Maker publishes acoustic Frequency Response of 15 Hz to 40 kHz. Test method and mode are not stated. LHDC sample rate is separate.

Min20 HzMax40 kHz1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 202620 Hz to 40 kHz, with LDAC at 96 kHz and 990 kbps.

Impedance

Not available

Not available

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

Not available

Not available

Sensitivity reference

Not available

Not available

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

192kHz2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026Maker LHDC 5.0 high-resolution claim: up to 192 kHz / 24-bit, up to 1 Mbps. It does not establish lossless transmission. Compatible LHDC Android host required. iOS native Bluetooth does not support LHDC.

96kHz1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026The frequency response row states LDAC 96 kHz / 990 kbps.

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.

24bits2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026LHDC 5.0 claim with the same compatible-host and app restrictions as the sample rate.

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

Yes2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

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.

62Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Not available

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

Balanced, Serenade, Bass Mode2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Not available

Volume limit

Not available

Not available

Spatial audio

2 of 2 differ

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

OnePlus 3D Audio2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026Static OnePlus 3D Audio with the published Android/iOS app requirements. Head tracking is not inferred.

Dolby Atmos1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 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

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

Noise cancelling

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Active noise cancelling

Yes1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

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

Hybrid2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026Maker identifies feed-forward and feed-back microphone roles in each earbud. Both microphone placements establish hybrid playback ANC, distinct from its adaptive algorithm.

Hybrid1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Listed as all-adaptive digital hybrid noise cancelling.

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.

42Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026Two ANC roles per earbud, feed-forward and feed-back, total four across the pair. The separate talk microphone is not added to this count.

Not available

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

Yes1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Adaptive ANC adjusts to ambient noise in real time.

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.

55dB1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Up to 55 dB from OnePlus Test Laboratory. The separate maximum cancellation bandwidth is 5500 Hz. This is not an independently measured overall attenuation.

Not available

Transparency mode

Yes1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

Adjustable transparency

Not available

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026The app can adjust how much outside sound is let in.

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

No7Reviewwhathifi.com/reviews/technics-eah-az100Read 13 October 2026The AZ100 has no speech-detecting feature.

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

Not available

Not available

Measured

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

The measured default response has increased sub-bass below 100 Hz and otherwise closely follows the SoundGuys Headphone Preference Curve.5Measurementsoundguys.com/oneplus-buds-4-review-142159Read 8 October 2026Written Objective Measurements section describes the measured default curve and explicitly names its target. No numeric graph interpolation or MDAQS score is stored in acoustic deviation fields.

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

Speech remains understandable in the published voice samples across several noise environments.5Measurementsoundguys.com/oneplus-buds-4-review-142159Read 8 October 2026Reviewer microphone demonstrations and written conclusions, not a maker call-noise claim. Firmware and codec are not specified.

The mono MEMS microphone is good enough for calls. The reviewer says it does not do well in the presence of noise, so results are workable for the office.4Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026Mono MEMS microphone. Demo recordings in ideal, office, street, windy and reverberant conditions. The reviewer says the microphone does not do well in the presence of noise.

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.

AOnePlus Buds 4

ANC	Hours (h)
Yes	5.52

Source5Measurementsoundguys.com/oneplus-buds-4-review-142159Read 8 October 2026Storm Gray reviewer unit supplied by the maker and tested for two weeks. ANC-on playback lasted 5 h 31 min, stored as 331/60 hours. Firmware, codec and numeric test level are not stated in the product review and remain unknown. This is one earbud charge, not case-inclusive runtime.

BTechnics EAH-AZ100

ANC	Codec	Hours (h)
Yes	SBC	10.67

Source4Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 202610 hours 40 minutes with real music peaking at 75 dBSPL, SBC and ANC on. Stored as 10.67 hours.

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

5.52h=CalculatedFrom Battery life (measured)

10.67h=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

0 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 product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Maker states three microphones per side and three-microphone AI calls. Six physical microphones across the pair, not three across the pair.

67Reviewwhathifi.com/reviews/technics-eah-az100Read 13 October 2026Three microphones in each earbud for noise cancelling and call quality.

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.

61Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Maker three microphones per side. The product page labels feed-forward, talk and feed-back roles.

67Reviewwhathifi.com/reviews/technics-eah-az100Read 13 October 2026Three microphones in each earbud, six in total.

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

AI1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

AI1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Voice Focus AI noise reduction for calls.

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

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Chip

Not available

Not available

Connections

Bluetooth1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

Bluetooth1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

Bluetooth

5.41Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

5.31Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

Bluetooth codecs

LHDC, AAC, SBC1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026The source names LHDC 5.0, normalized to the schema codec name LHDC. AAC and SBC are also named. LHDC requires a compatible host.

SBC, AAC, LDAC, LC31Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 20262Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026

Bluetooth profiles

HFP, A2DP, AVRCP1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

A2DP, AVRCP, HSP, HFP, TMAP, PBP1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 20262Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026A2DP, AVRCP, HSP, HFP, TMAP and PBP.

LE Audio

Not available

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

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 product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

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

21Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

31Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Up to 3 devices connected at once. LDAC playback works with 2 devices only.3Maker product pagehelp.na.panasonic.com/answers/what-features-make-eah-az100-uniqueRead 13 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

101Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Multi-pairing for up to 10 devices.3Maker product pagehelp.na.panasonic.com/answers/what-features-make-eah-az100-uniqueRead 13 October 2026

Automatic switching between own devicesiThrough the maker's account

Not available

Not available

Fast pairing

Google Fast Pair1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

Google Fast Pair8Press articlestereonet.com/news/technics-launches-new-eah-az100-tws-with-proprietary-driversRead 13 October 2026Supports Google Fast Pair.

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

10m1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

10m1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

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

3 of 3 differ

Low latency mode

Yes2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Not available

Claimed latency

AOnePlus Buds 4

Connection	Mode	Latency (ms)
Bluetooth	Low latency mode	47

Source2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026Maker laboratory claim 47 ms in its low-latency feature. Host, codec and firmware are not specified. It is not an independently measured latency or a universal guarantee.

BTechnics EAH-AZ100

Not available

Lowest claimed latency

47ms=CalculatedFrom Claimed latency

Not available

Compatibility

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

Android, iOS3Owner's manualmedia.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20ManualRead 8 October 2026

Not available

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.

AOnePlus Buds 4

Platform	Connection
Android	Bluetooth
iOS	Bluetooth

Source3Owner's manualmedia.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20ManualRead 8 October 2026Original guide explicitly documents OnePlus Android and other Android/iOS pairing. No USB audio route is assigned to the charging case.

BTechnics EAH-AZ100

Not available

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

AOnePlus Buds 4

Feature	Needs
LHDC 5.0 high-resolution playback	Compatible Android device with LHDC 5.0. OnePlus Android 12 or later uses Earbuds Function. Other Android 7.0 or later devices use HeyMelody. Not supported on iOS.
OnePlus 3D Audio and Golden Sound	OnePlus Android 12 or later uses Earbuds Function. Other Android 7.0 or later and iOS devices use HeyMelody.
Steady Connect	Select OnePlus phones with OxygenOS 15.0.0 or later.
AI Translation	Select OnePlus devices with OxygenOS 15.0.1 or later. Supported languages are listed in the app.
Voice assistant shortcut	Enable in OnePlus phone Settings or HeyMelody. Available assistant functions depend on the smartphone and its installed assistant.
Single-tap playback control	Disabled by default. Enable manually in OnePlus phone Settings or HeyMelody.
47 ms low-latency mode	Automatically enabled for OnePlus phone users. Other brands require manual activation in HeyMelody.

Source2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026Exact footnotes 1, 5, 6, 7, 8, 9 and 11 of the US maker product page. These limit advanced features, not ordinary Bluetooth audio compatibility.

BTechnics EAH-AZ100

Feature	Needs
Multipoint with LDAC	LDAC playback is available with 2 devices only.
Wireless high-resolution playback	Use a playback device with the high-resolution wireless logo and set the Bluetooth sound quality setting to sound quality priority mode, LDAC 990 kbps.

Source1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

Official licence

Not available

Not available

Battery and charging

13 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.

62mAh1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Maker unqualified cell capacity of one earbud. Typical versus rated is not identified.

85mAh2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Earphones 3.7 V lithium polymer 85 mAh.

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.

No4Owner's manualoneplus.com/content/dam/oneplus/2024/eu/store/safety_guide/OnePlus_Buds_4_Safety_Guide.pdfRead 8 October 2026Original safety instructions explicitly prohibit replacing or disassembling the battery. No manufacturer-approved normal replacement procedure was found.

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.

AOnePlus Buds 4

Mode	Codec	Includes case recharges	Hours (h)
ANC off	AAC	No	11
ANC off	AAC	Yes	45
ANC on	AAC	No	6
ANC on	AAC	Yes	24
ANC off	LHDC	No	9
ANC off	LHDC	Yes	37
ANC on	LHDC	No	5.5
ANC on	LHDC	Yes	22
Call	Not available	No	6
Call	Not available	Yes	24
Call	Not available	No	4
Call	Not available	Yes	17

Source1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026All rows use 50% volume. AAC playback claims: ANC off 11 h buds / 45 h total and ANC on 6 h / 24 h. LHDC playback: off 9 h / 37 h and on 5.5 h / 22 h. Call rows 6 h / 24 h are ANC off, and 4 h / 17 h are ANC on. The maker labels those calls HFP, a profile rather than an actual speech codec, so codec is omitted for call rows. The call mode cannot encode ANC, so those conditions remain here. with_case includes the initial earbud charge.

BTechnics EAH-AZ100

Mode	Codec	Includes case recharges	Hours (h)
ANC on	AAC	No	10
ANC off	AAC	No	12
ANC on	AAC	Yes	28
ANC off	AAC	Yes	29
ANC on	SBC	No	8
ANC on	SBC	Yes	24
ANC on	LDAC	No	7
ANC off	LDAC	No	8
ANC on	LDAC	Yes	18
ANC off	LDAC	Yes	19
ANC on	LC3	No	5
ANC on	LC3	Yes	15

Source1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Maker figures for AAC and LDAC, with NC on and NC off. Earphones about 10 hours (NC on) and 12 hours (NC off) with AAC. With the charging case about 28 hours and 29 hours. LDAC about 7 and 8 hours, 18 and 19 hours with the case. The SBC and LC3 figures come from the owner's manual, measured with noise cancelling on.2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Specifications page, Operating time measured with Noise cancelling set to ON. Earphones about 10.0 hours AAC, 8.0 hours SBC, 7.0 hours LDAC and 5.0 hours LC3. With the charging cradle about 28 hours AAC, 24 hours SBC, 18 hours LDAC and 15 hours LC3.

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.

11h=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.

6h=CalculatedFrom Claimed battery life

10h=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.

11h=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.

45h=CalculatedFrom Claimed battery life

29h=CalculatedFrom Claimed battery life

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

24h=CalculatedFrom Claimed battery life

28h=CalculatedFrom Claimed battery life

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.

50min1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Maker specifies earbuds-only charge time about 50 minutes. The separate about-80-minute result includes both earbuds and case, so it is not stored as case_charge_time_min.

120min1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Earphones about 2.0 hours at 25 degrees C.2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Charging time at 25 degrees C is the time to charge the batteries from empty to full. Earphones about 2.0 hours.

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.

Not available

At 25 degrees C, the earphones with the charging cradle take about 3 hours by USB and about 4 hours on a Qi charger. The cradle alone takes about 2.5 hours by USB and about 3.5 hours on a Qi charger.1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 20262Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Earphones with the cradle by USB about 3.0 hours. The Taiwan catalog adds the Qi charging times.

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

10min1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

15min1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 202615 minutes of charging, AAC, earphones.3Maker product pagehelp.na.panasonic.com/answers/what-features-make-eah-az100-uniqueRead 13 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.

3.5h1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Maker earbuds-only claim is 3.5 hours after ten minutes. Conditions ANC off, AAC, 50% volume. The eleven-hour quick-charge headline includes case recharges and is not stored here.

1.5h1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026About 90 minutes of playback with NC on, stored as 1.5 hours.3Maker product pagehelp.na.panasonic.com/answers/what-features-make-eah-az100-uniqueRead 13 October 2026A 15 minute charge provides up to 90 minutes of playback.

Charging case

5 of 10 differ

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

530mAh1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Maker unqualified charging case cell capacity. It is separate from one-bud capacity.

550mAh2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Charging cradle 3.7 V lithium polymer 550 mAh.

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.

No4Owner's manualoneplus.com/content/dam/oneplus/2024/eu/store/safety_guide/OnePlus_Buds_4_Safety_Guide.pdfRead 8 October 2026Same original safety rule covers the device and accessories, including charging case batteries. Service repair and disposal are not routine user replacement.

Not available

Case charging port

USB-C1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

USB-C1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 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.

Not available

150min1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Charging cradle by USB about 2.5 hours at 25 degrees C.2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Charging cradle by USB about 2.5 hours.

Wireless charging

No5Measurementsoundguys.com/oneplus-buds-4-review-142159Read 8 October 2026Reviewer explicitly states the USB-C case does not support wireless charging.

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

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

Not available

Qi1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 20262Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Qi standard wireless chargers are supported. Not every Qi charger is guaranteed to work. Chargers that are not Qi certified or have magnetic attachments are not supported.3Maker product pagehelp.na.panasonic.com/answers/what-features-make-eah-az100-uniqueRead 13 October 2026

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

Not available

Not available

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

Not available

Not available

Screen on case

Not available

Not available

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

Not available

Not available

Controls

4 of 5 differ

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

Touch, Swipe2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Touch4Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026

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

Swipe2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Touch4Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026

Gestures

Single tap, Double tap, Triple tap, Touch and hold for one second, Slide up and down3Owner's manualmedia.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20ManualRead 8 October 2026Original English touch table. Single-tap playback is disabled by default and must be enabled in app settings.

Single tap: play or pause (either bud), Left double tap: volume down, Right double tap: next track, Left triple tap: volume up, Right triple tap: previous track, Left long press: voice assistant, Right long press: ANC mode toggle4Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026Default touch map. Customisable in the app.

Remappable controls

Yes2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Touch controls and the equalizer are customised in the Technics Audio Connect app.

Voice assistant

Google Gemini, Google Assistant, Apple Siri2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Not available

Sensors and health

2 of 9 differ

In-ear detection

Not available

Yes1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Wear sensor pauses playback when an earphone is removed.4Measurementsoundguys.com/technics-eah-az100-review-135211Read 13 October 2026Light sensors near the nozzle report whether the earbuds are worn.

Sensors

Not available

Not available

Heart rate sensor

Not available

Not available

Skin temperature sensingiA documented skin temperature sensor. This is separate from the operating temperature range or a heart-rate sensor.

Not available

Not available

Hearing aid featureiAmplification for mild to moderate hearing loss

Not available

Not available

Medical clearances

Not available

Not available

Hearing testiA documented hearing assessment feature, including consumer sound-personalization tests. Medical diagnostic clearance must be stated separately.

Yes2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Not available

Hearing protectioniLimits sudden loud sounds

Not available

Not available

Health features

Not available

Not available

Fit and durability

3 of 7 differ

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

S, M, L1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

XS, S, M, ML, L1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Spec table: XS, S, M, ML and L, with M pre-installed.3Maker product pagehelp.na.panasonic.com/answers/what-features-make-eah-az100-uniqueRead 13 October 2026Earpieces in XS, S, M, ML and L.

Ear tip materials

Silicone4Owner's manualoneplus.com/content/dam/oneplus/2024/eu/store/safety_guide/OnePlus_Buds_4_Safety_Guide.pdfRead 8 October 2026

Silicone1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

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

Not available

Not available

Ear tip fit test

Yes3Owner's manualmedia.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20ManualRead 8 October 2026

No7Reviewwhathifi.com/reviews/technics-eah-az100Read 13 October 2026No ear tip fit test in the app.

Dust and water rating, buds

IP551Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

IPX41Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026IPX4 equivalent, earphones only.3Maker product pagehelp.na.panasonic.com/answers/what-features-make-eah-az100-uniqueRead 13 October 2026

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

4 of 6 differ

Companion app

HeyMelody and OnePlus Wireless Earphones3Owner's manualmedia.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20ManualRead 8 October 2026Original guide names built-in Wireless Earphones / OnePlus Buds settings on OnePlus phones and HeyMelody for other Android/iOS phones. Current US footnotes take precedence for advanced feature OS requirements.

Technics Audio Connect1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

App platforms

Android, iOS3Owner's manualmedia.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20ManualRead 8 October 2026

Android, iOS6Reviewtechradar.com/audio/earbuds-airpods/technics-eah-az100-reviewRead 13 October 2026The Technics Audio control app is free for iOS and Android.

User firmware updates

Yes1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

Not available

Finding network

Not available

Last location in the app1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026The app shows the last connected location of the earphones on a map.

Precision findingiUWB in the case

Not available

Not available

Live translation

Yes2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026

Not available

Dimensions and weight

4 of 4 differ

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

4.73g(0.2 oz)1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Maker single-earbud mass 4.73 ± 0.2 g. Empty-case mass is omitted because the linked workbook has 39.97 g and 39.57 g on differently keyed sheets without an exact colour/configuration bridge. Unlabelled dimension tuples do not establish axes.

5.9g(0.2 oz)1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026About 5.9 g for one earphone. Left and right are the same.2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Earphone about 5.9 g, one side only.

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

Not available

Width21Height26Depth25mm(0.8 × 1 × 1 in)1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026About 21 x 26 x 25 mm, listed as width x height x depth, with the M ear tip fitted.

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

Not available

42g(1.5 oz)1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Charging case about 42 g.2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Charging cradle about 42 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

Width69Height36Depth27mm(2.7 × 1.4 × 1.1 in)1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026About 69 x 36 x 27 mm, listed as width x height x depth.

Certifications

0 of 3 differ

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

Hi-Res Audio Wireless2Maker product pageoneplus.com/us/oneplus-buds-4Read 8 October 2026Maker displays Hi-Res Audio Wireless branding and describes compatible LHDC 5.0 high-resolution playback.

Hi-Res Audio Wireless1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Hi-Res Audio Wireless logo footnote.2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026Complies with the High Resolution Audio standard of the Japan Audio Association. Wireless high-resolution quality needs LDAC 990 kbps.

Communication certifications

Not available

Not available

FCC IDs

Not available

ACJ-EAH-AZ100R, ACJ-EAH-AZ100L2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 October 2026FCC ID ACJ-EAH-AZ100R and ACJ-EAH-AZ100L.

Other certifications

Not available

Not available

In the box

2 of 2 differ

In the box

OnePlus Buds 4 (one pair), OnePlus Buds 4 Charging Case, Type-C Charging Cable, Ear Tips (S, M, L pairs, M pre-installed), User Manual and Safety and Warranty1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

USB charging cable, Ear tips XS, S, M, ML, L (M pre-installed)1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026Accessories row: USB cable and ear tips.

Cables included

AOnePlus Buds 4

Type	Count
USB-A to USB-C charging cable	1

Source5Measurementsoundguys.com/oneplus-buds-4-review-142159Read 8 October 2026Reviewer explicitly identifies the supplied cable as USB-A to USB-C. Length is not stated.

BTechnics EAH-AZ100

Type	Length (m)	Count
USB Type-C to USB Type-C	0.2	1

Source1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026USB charging cable about 0.2 m, USB Type-C to USB Type-C.

Links

Not compared

Product page

www.oneplus.com/us/oneplus-buds-41Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026

help.na.panasonic.com/answers/what-features-make-eah-az100-unique3Maker product pagehelp.na.panasonic.com/answers/what-features-make-eah-az100-uniqueRead 13 October 2026

Spec sheet

www.oneplus.com/content/dam/oneplus/2025/specs/buds4/parameter-na-buds4-0701.xlsx1Maker product pageoneplus.com/us/oneplus-buds-4/specsRead 8 October 2026Public maker workbook linked by the page. Rendered specifications select sheet P000001. The workbook also includes unselected P000002 with differing case mass and call-profile labels, so no exact colour-dependent case mass is inferred.

pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdf1Maker spec sheet (PDF)pstw.panasonic.com.tw/catalog/files/1_consumer/Technics/202511_Panasonic_Technics.pdfRead 13 October 2026

Manual

media.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20Manual3Owner's manualmedia.tatacroma.com/Croma%20Assets/Wearable/Wearable%20Devices/User%20Manual/316448_User%20ManualRead 8 October 2026Maker-authored original two-page English/Hindi user guide hosted by the retailer. Its English page was read in full. Global model identity is separately confirmed by the original OnePlus safety document E513A.

eww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdf2Owner's manualeww.pavc.panasonic.co.jp/avcacc/technics/eah_az100/eah_az100_pnqw6265xa_si_en_cf_sp_ge_etc_s.pdfRead 13 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

Not available

Warranty

None of 1 known

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.

Not available

Not available

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