HEADPHONES · YOUR NEXT FACE-OFF

OnePlus Buds 4 vs Google Pixel Buds 2a

Real specs. Clear sources.Exact models · UK & US buying links

Compared products

YOUR FIRST CHOICE

OnePlus Buds 4

5481158909 · Storm Gray · UK

Full product profile Official image

Exact model & source notes

OnePlus Buds 4 are true wireless earbuds with real-time adaptive ANC, a dual-driver design (11 mm woofer plus 6 mm tweeter) and Bluetooth 5.4 with LHDC 5.0, AAC and SBC, plus Steady Connect for extended range on select OnePlus phones. This record is the Storm Gray colour (UK SKU 5481158909); OnePlus rates it at 6 hours with ANC on and 24 hours with the case using AAC.

Specifications checked 26 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

WHAT DIFFERS

4.73 gWeight per earbud4.7 g

1 of 8 verified differences, in the order listed below. Not a rating.

See the 8 verified differences

THE CONTENDER

Google Pixel Buds 2a

Hazel · UK

Full product profile Official image

Exact model & source notes

Pixel Buds 2a are Google's noise-cancelling true wireless earbuds, with a Google Tensor A1 chip, Bluetooth 5.4 and an 11 mm dynamic driver in each earbud. This record is the Hazel colour from the UK Google Store; Google rates the earbuds at up to 7 hours with ANC on and 20 hours with the USB-C charging case.

Specifications checked 26 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

OnePlus Buds 4 UK & US retailers

UK & US price history: no verified listing yet

Google Pixel Buds 2a UK & US retailers

UK & US price history: no verified listing yet

Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.

THE DIFFERENCES, MADE VISIBLE

Visual facts

Differences first. Select a topic for its graphic, sources and conditions.

How to read this comparison

Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.

FEATURES SIDE BY SIDE5 topics

Yes and No describe the listed feature. Missing evidence stays unverified.

SELECTED TOPIC

01 / 05

Weight per earbud

Manufacturer-stated mass of one earbud, plotted only when both sources state a per-earbud figure. The charging case is separate. This is not a comfort or fit rating.

OnePlus Buds 44.73 g

Manufacturer specification · Each earbud, stated as 4.73 ± 0.2 g on both UK and US pages. The UK page gives the charging case as 39.57 ± 1 g (total 49.02 ± 1 g); the US page gives 39.97 ± 1 g (total 49.42 ± 1 g).

Source 1 Source 2

Google Pixel Buds 2a4.7 g

Manufacturer specification · Each earbud with the medium eartip. The charging case weighs 47.6 g with the earbuds inside.

Source 1 Source 2

Explore the full specifications

Start with your listening environment. Open and closed earcups suit different surroundings. A closed back is not the same as active noise cancellation. Check the exact cable and headphone output. We do not turn impedance, driver size or unpaired lab results into a sound-quality score.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

8 verified differences, most decision-relevant first. 1 is also drawn in Visual facts above. Missing information stays separate.

Wired / wireless connections

OnePlus Buds 4Bluetooth 5.4 with Steady Connect; LHDC 5.0, AAC and SBC codecs; dual-device connection

Google Pixel Buds 2aBluetooth 5.4 (each earbud); USB-C charging port on the case

Sources

OnePlus Buds 4

Manufacturer specification · Google Fast Pair is listed without an exact supported-phone range on these Buds 4 pages. Steady Connect is restricted to select OnePlus phones with OxygenOS 15.0.0 or later. The declared Bluetooth range is 10 m; actual conditions and interference vary. Case charging is separate and does not establish cable audio.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

Manufacturer specification · No wireless charging is listed for this case. Google states it pairs with any Bluetooth 4.0+ device; full feature access needs a Google Account, an Android 6.0+ companion phone and an internet connection. No codec list is published on the specification page.

Google Store (UK) — Pixel Buds 2a Technical Specs

Check the exact configuration and source conditions for your use.

Battery life

OnePlus Buds 4Earbuds: 6 hours with ANC on, 11 hours with ANC off (AAC). With the case: 24 hours with ANC on, 45 hours with ANC off (AAC). Using LHDC: 5.5 / 22 hours with ANC on and 9 / 37 hours with ANC off.

Google Pixel Buds 2aEarbuds: up to 7 hours with Active Noise Cancellation on, up to 10 hours with it off. With the charging case: up to 20 hours total with ANC on, up to 27 hours with ANC off. A 5-minute charge in the case gives up to 1 hour with ANC on.

Sources

OnePlus Buds 4

Manufacturer specification · OnePlus test figures at 50% volume with the stated codec. Fast charge: 10 minutes gives 3.5 hours (earbuds) or 11 hours (earbuds + case) with ANC off, AAC.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

Manufacturer specification · Google's stated listening-time ratings on the UK and US specification pages; the page gives no further test conditions.

Google Store (UK) — Pixel Buds 2a Technical Specs Google Store (US) — Pixel Buds 2a Technical Specs

Manufacturer claims for the stated mode and equipment. Read each test condition; this is not measured everyday battery life.

Drivers

OnePlus Buds 4Dual drivers: 11 mm woofer + 6 mm tweeter

Google Pixel Buds 2aCustom-designed 11 mm dynamic driver (each earbud)

Sources

OnePlus Buds 4

Manufacturer specification · Woofer: 30-layer ceramic-metal diaphragm; tweeter: flat diaphragm.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

Manufacturer specification

Google Store (UK) — Pixel Buds 2a Technical Specs

Check whether the diameter describes the complete transducer or only its diaphragm. Different labels and driver sizes do not establish better sound.

Earbud controls

OnePlus Buds 4Touch controls on the stem: slide up or down for volume; long touch and hold to switch between Noise Cancellation and Transparency modes; single tap to play or pause; double tap for the next song; triple tap for the previous song

Google Pixel Buds 2aCapacitive touch (tap) for music, calls and voice assistant; IR proximity in-ear detection

Sources

OnePlus Buds 4

Manufacturer specification · Single tap must be manually activated in the phone Settings (OnePlus phones) or the HeyMelody app (other Android and iOS). OnePlus also lists a tap for the phone's built-in voice assistant (activated manually in the same way), Double-Tap for Camera Control and three taps for AI Translation on select OnePlus devices.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

Manufacturer specification

Google Store (UK) — Pixel Buds 2a Technical Specs

Check the exact configuration and source conditions for your use.

Wearing style

OnePlus Buds 4In-ear, true wireless (ear tips in S, M and L)

Google Pixel Buds 2aIn-ear, true wireless (eartips in four sizes)

Sources

OnePlus Buds 4

Manufacturer specification · Two earbuds (one pair) with a charging case; the box lists ear tips in S, M and L pairs, with M pre-installed. OnePlus does not state the ear tip material.

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

Manufacturer specification · Two separate earbuds with a charging case; eartips in four size options (extra small, small, medium attached to earbuds, large) are in the box. Google does not state the eartip material.

Google Store (UK) — Pixel Buds 2a Technical Specs

Check the exact configuration and source conditions for your use.

Dust, sweat and water resistance

OnePlus Buds 4IP55 (earbuds only; the charging case is not rated)

Google Pixel Buds 2aEarbuds IP54; case IPX4

Sources

OnePlus Buds 4

Manufacturer specification · OnePlus: the earbuds feature IP55 water and dust resistance, however the charging case does not. Water and dust resistance may diminish with device ageing; liquid and dust damage are not covered under the warranty.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

Manufacturer specification

Google Store (UK) — Pixel Buds 2a Technical Specs

Check the exact configuration and source conditions for your use.

Show 2 more verified differences

Weight per earbud

In Visual facts

OnePlus Buds 44.73 g

Google Pixel Buds 2a4.7 g

Sources

OnePlus Buds 4

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

Manufacturer specification · Each earbud with the medium eartip. The charging case weighs 47.6 g with the earbuds inside.

Google Store (UK) — Pixel Buds 2a Technical Specs Google Store (US) — Pixel Buds 2a Technical Specs

A size or weight trade-off; it does not establish the better product.

Dimensions

OnePlus Buds 4Each earbud: 31 x 20.6 x 24.2 mm; charging case: 65.4 x 52.4 x 25.3 mm

Google Pixel Buds 2aEach earbud (with medium eartip): 23.1 x 16.0 x 17.8 mm; charging case: 50.0 x 24.5 x 57.2 mm

Sources

OnePlus Buds 4

Manufacturer specification

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

Manufacturer specification

Google Store (UK) — Pixel Buds 2a Technical Specs Google Store (US) — Pixel Buds 2a Technical Specs

A size or weight trade-off; it does not establish the better product.

Missing or non-comparable evidence (25)

Listed driver impedances

OnePlus Buds 418 Ω ± 15%; 10 Ω ± 15%

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · The table gives two values but does not explicitly assign them to a named driver or a headphone input/load condition. Do not invent a woofer/tweeter assignment or amplifier compatibility result.

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

AI Translation

OnePlus Buds 4Yes

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · Three earbud taps activate AI Translation on the OnePlus phone; available on select OnePlus devices with OxygenOS 15.0.1 and above.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Companion app

OnePlus Buds 4Compatible with the HeyMelody app. Sound features: Sound Master EQ (Balanced, Serenade and Bass Mode presets, a customisable six-band EQ and BassWave); Golden Sound personal audio profile from an ear scan and listening test

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · Golden Sound (and OnePlus 3D Audio) is set in 'Earbuds Function' on OnePlus phones with Android 12 and above; other users (iOS / Android 7.0 and above) need the HeyMelody app. The specification page also lists OTA updates.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Battery capacity

OnePlus Buds 4Earbuds 62 mAh; charging case 530 mAh

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Playback with case, AAC, ANC on

OnePlus Buds 424 h

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · Music playback with the case, AAC, ANC on and 50% volume. OnePlus Test Laboratory claim; actual performance varies.

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

UK published case weight

OnePlus Buds 439.57 g

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · UK: 39.57 ± 1 g; US: 39.97 ± 1 g. The selected SKU is UK; the source discrepancy is unexplained. Do not average the figures, assert physical equivalence across regions or interpret case weight as the earbuds-and-case total.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Charge time

OnePlus Buds 4Earbuds about 50 minutes; earbuds + case about 80 minutes

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Case charging connector

OnePlus Buds 4USB Type-C

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · The source describes charging, not USB audio or data operation. Compatible charger power and a cable-audio mode are not established.

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Headphone chip

OnePlus Buds 4Not verified

Google Pixel Buds 2aGoogle Tensor A1 (each earbud)

Sources

OnePlus Buds 4

No source recorded for this side.

Google Pixel Buds 2a

Manufacturer specification

Google Store (UK) — Pixel Buds 2a Technical Specs

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Bluetooth codecs

OnePlus Buds 4LHDC 5.0, AAC, SBC

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · LHDC 5.0 Hi-Res Audio up to 1 Mbps, 24 bit, 192 kHz. Hi-Res Audio is supported on Android devices with LHDC 5.0 (OnePlus phones with Android 12 and above via 'Earbuds Function'; other Android 7.0 and above via the HeyMelody app) and is not supported on iOS devices.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

DAC

OnePlus Buds 4Dual DACs: a dedicated DAC for each driver (11 mm woofer and 6 mm tweeter)

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification

OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Find My Earbuds

OnePlus Buds 4Yes

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · Listed by name only; OnePlus does not describe how it works on these pages.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Frequency response

OnePlus Buds 415 Hz to 40 kHz

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Spatial audio head tracking

OnePlus Buds 4Not verified

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

No explicit head-tracking presence or absence is established in the complete reviewed Buds4 pages. OnePlus3DAudio alone does not prove head tracking. · Manufacturer specification

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Low-latency mode

OnePlus Buds 447 ms low latency

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · OnePlus Test Laboratory figure; enabled automatically on OnePlus phones, manual operation in the HeyMelody app on other brands.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Manufacturer microphone sensitivity

OnePlus Buds 4-38 ± 1 dB

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · Buds4 gives no dBV/Pa reference; Pro3 explicitly gives dBV/Pa. These different bases cannot establish a microphone-performance difference.

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Multipoint (dual-device) connection

OnePlus Buds 4Yes

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Manufacturer rated power

OnePlus Buds 410 mW

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · The Audio table does not explicitly assign this rating to an individual driver or define a continuous/peak basis. No power-handling or sound-quality ranking is established.

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Security updates

OnePlus Buds 4Not verified

Google Pixel Buds 2aAutomatic security updates for at least three years

Sources

OnePlus Buds 4

No source recorded for this side.

Google Pixel Buds 2a

Manufacturer specification · Counted from when the device first became available on the Google Store in the US.

Google Store (UK) — Pixel Buds 2a Technical Specs

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Manufacturer sensitivity and reference

OnePlus Buds 4118 ± 1.3 dB at 1 mW

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · Buds 4 names a 1 mW input but no frequency or test fixture. Buds Pro 3 names 1 kHz and the literal “Input: -10 dB IEC711” notation, without identifying that input in volts or milliwatts. These do not provide sensitivity on the same basis; do not convert or rank them.

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

UK published earbuds and case total weight

OnePlus Buds 449.02 g

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · UK: 49.02 ± 1 g; US: 49.42 ± 1 g. These are published total values, not newly calculated sums. The regional difference remains unexplained.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Unreferenced advertised sound pressure

OnePlus Buds 496.5 dB

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · No frequency, input reference, weighting or explicit maximum label is supplied in this row. Do not reinterpret as maximum SPL or sensitivity.

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Spatial audio

OnePlus Buds 4Spatial audio rendering

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

Manufacturer specification · Marketed as OnePlus 3D Audio. Set through Earbuds Function on OnePlus phones running Android 12 or later, or through HeyMelody for other iOS/Android 7 or later users. These pages do not explicitly establish head tracking.

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Bone-conduction voice pickup sensor

OnePlus Buds 4Not verified

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

The complete reviewed Buds4 pages describe three microphones per side but do not establish VPU presence or absence. · Manufacturer specification

OnePlus (UK) — OnePlus Buds 4 Specs

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Wireless case charging

OnePlus Buds 4Not verified

Google Pixel Buds 2aNot verified

Sources

OnePlus Buds 4

The complete reviewed exact pages list USB-C charging but do not explicitly establish wireless-charging presence or absence. Omission does not mean false. · Manufacturer specification

OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview

Google Pixel Buds 2a

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

2 shared fields have the same recorded value.

YOUR HEADPHONES. YOUR RULES.

Check against your must-haves

Feature matching for the features you select. It doesn’t rate sound or comfort.

Start with your listening setup.

Choose a starting point, then fine-tune your must-haves.

FINE-TUNE THE DETAILS

Your essentials.

These shortcuts select the features shown above. Check the fit against your own equipment and listening space.

A feature match describes the selected requirements. It doesn’t rate sound or comfort.

Open-back designFor a quiet listening spaceClosed-back designAn enclosed outer earcupDetachable cableUnplug the cable at the headphonesBuilt-in microphoneFor calls and voice chatActive noise cancellationNot the same as a closed back

YOUR CHOICE

OnePlus Buds 4

Select a feature to check your fit.

YOUR CHOICE

Google Pixel Buds 2a

Select a feature to check your fit.

Feature matching, not a sound-quality score. The specification table links to the evidence for each feature.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

OnePlus Buds 4

What it brings

Supports the LHDC 5.0 codec alongside AAC and SBC, plus dual-device connection and Google Fast Pair.
Manufacturer source
Adaptive ANC is rated up to 55 dB, with separate Adaptive and Transparency modes, and each earbud has three microphones for calls.
Manufacturer source

What to check

The specification page lists USB-C case charging; wireless-charging support is not established by the reviewed exact sources.
Manufacturer source
Battery drops when using LHDC: 5.5 hours per charge with ANC on, versus 6 hours with AAC. OnePlus's UK and US pages also give slightly different case weights (39.57 g and 39.97 g).
Manufacturer source Manufacturer source

Google Pixel Buds 2a

What it brings

Active Noise Cancellation with Silent Seal 1.5, Transparency mode and in-ear pressure relief are included, powered by the Tensor A1 chip in each earbud.
Manufacturer source
The charging case weighs 47.6 g with the earbuds inside and measures 50.0 x 24.5 x 57.2 mm; each earbud weighs 4.7 g with the medium eartip.
Manufacturer source

What to check

The case charges only over USB-C; Google lists no wireless charging and no case speaker for this model, and the earbuds have two microphones each and tap-only touch controls.
Manufacturer source
Rated ANC-on battery is 7 hours per charge and 20 hours with the case. Full feature access requires a Google Account and an Android 6.0 or newer phone.
Manufacturer source Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

35 of 35 specifications Sources in each row

Source-backed specifications for OnePlus Buds 4 and Google Pixel Buds 2a
Specification	OnePlus Buds 4	Google Pixel Buds 2a

Wearing styleDifferent Sources OnePlus Buds 4 Manufacturer specification · Two earbuds (one pair) with a charging case; the box lists ear tips in S, M and L pairs, with M pre-installed. OnePlus does not state the ear tip material. OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a Manufacturer specification · Two separate earbuds with a charging case; eartips in four size options (extra small, small, medium attached to earbuds, large) are in the box. Google does not state the eartip material. Google Store (UK) — Pixel Buds 2a Technical Specs	In-ear, true wireless (ear tips in S, M and L)	In-ear, true wireless (eartips in four sizes)
Weight per earbudDifferent Sources OnePlus Buds 4 Manufacturer specification · Each earbud, stated as 4.73 ± 0.2 g on both UK and US pages. The UK page gives the charging case as 39.57 ± 1 g (total 49.02 ± 1 g); the US page gives 39.97 ± 1 g (total 49.42 ± 1 g). OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs Google Pixel Buds 2a Manufacturer specification · Each earbud with the medium eartip. The charging case weighs 47.6 g with the earbuds inside. Google Store (UK) — Pixel Buds 2a Technical Specs Google Store (US) — Pixel Buds 2a Technical Specs	4.73 g	4.7 g
DimensionsDifferent Sources OnePlus Buds 4 Manufacturer specification OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs Google Pixel Buds 2a Manufacturer specification Google Store (UK) — Pixel Buds 2a Technical Specs Google Store (US) — Pixel Buds 2a Technical Specs	Each earbud: 31 x 20.6 x 24.2 mm; charging case: 65.4 x 52.4 x 25.3 mm	Each earbud (with medium eartip): 23.1 x 16.0 x 17.8 mm; charging case: 50.0 x 24.5 x 57.2 mm
Dust, sweat and water resistanceDifferent Sources OnePlus Buds 4 Manufacturer specification · OnePlus: the earbuds feature IP55 water and dust resistance, however the charging case does not. Water and dust resistance may diminish with device ageing; liquid and dust damage are not covered under the warranty. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a Manufacturer specification Google Store (UK) — Pixel Buds 2a Technical Specs	IP55 (earbuds only; the charging case is not rated)	Earbuds IP54; case IPX4
UK published case weight Sources OnePlus Buds 4 Manufacturer specification · UK: 39.57 ± 1 g; US: 39.97 ± 1 g. The selected SKU is UK; the source discrepancy is unexplained. Do not average the figures, assert physical equivalence across regions or interpret case weight as the earbuds-and-case total. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	39.57 g	Not provided
UK published earbuds and case total weight Sources OnePlus Buds 4 Manufacturer specification · UK: 49.02 ± 1 g; US: 49.42 ± 1 g. These are published total values, not newly calculated sums. The regional difference remains unexplained. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	49.02 g	Not provided

Wired / wireless connectionsDifferent Sources OnePlus Buds 4 Manufacturer specification · Google Fast Pair is listed without an exact supported-phone range on these Buds 4 pages. Steady Connect is restricted to select OnePlus phones with OxygenOS 15.0.0 or later. The declared Bluetooth range is 10 m; actual conditions and interference vary. Case charging is separate and does not establish cable audio. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a Manufacturer specification · No wireless charging is listed for this case. Google states it pairs with any Bluetooth 4.0+ device; full feature access needs a Google Account, an Android 6.0+ companion phone and an internet connection. No codec list is published on the specification page. Google Store (UK) — Pixel Buds 2a Technical Specs	Bluetooth 5.4 with Steady Connect; LHDC 5.0, AAC and SBC codecs; dual-device connection	Bluetooth 5.4 (each earbud); USB-C charging port on the case
Battery lifeDifferent Sources OnePlus Buds 4 Manufacturer specification · OnePlus test figures at 50% volume with the stated codec. Fast charge: 10 minutes gives 3.5 hours (earbuds) or 11 hours (earbuds + case) with ANC off, AAC. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs Google Pixel Buds 2a Manufacturer specification · Google's stated listening-time ratings on the UK and US specification pages; the page gives no further test conditions. Google Store (UK) — Pixel Buds 2a Technical Specs Google Store (US) — Pixel Buds 2a Technical Specs	Earbuds: 6 hours with ANC on, 11 hours with ANC off (AAC). With the case: 24 hours with ANC on, 45 hours with ANC off (AAC). Using LHDC: 5.5 / 22 hours with ANC on and 9 / 37 hours with ANC off.	Earbuds: up to 7 hours with Active Noise Cancellation on, up to 10 hours with it off. With the charging case: up to 20 hours total with ANC on, up to 27 hours with ANC off. A 5-minute charge in the case gives up to 1 hour with ANC on.
Battery capacity Sources OnePlus Buds 4 Manufacturer specification OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	Earbuds 62 mAh; charging case 530 mAh	Not provided
Charge time Sources OnePlus Buds 4 Manufacturer specification OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	Earbuds about 50 minutes; earbuds + case about 80 minutes	Not provided
Low-latency mode Sources OnePlus Buds 4 Manufacturer specification · OnePlus Test Laboratory figure; enabled automatically on OnePlus phones, manual operation in the HeyMelody app on other brands. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a No source recorded.	47 ms low latency	Not provided
Bluetooth codecs Sources OnePlus Buds 4 Manufacturer specification · LHDC 5.0 Hi-Res Audio up to 1 Mbps, 24 bit, 192 kHz. Hi-Res Audio is supported on Android devices with LHDC 5.0 (OnePlus phones with Android 12 and above via 'Earbuds Function'; other Android 7.0 and above via the HeyMelody app) and is not supported on iOS devices. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a No source recorded.	LHDC 5.0, AAC, SBC	Not provided
Multipoint (dual-device) connection Sources OnePlus Buds 4 Manufacturer specification OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	Yes	Not provided
Case charging connector Sources OnePlus Buds 4 Manufacturer specification · The source describes charging, not USB audio or data operation. Compatible charger power and a cable-audio mode are not established. OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	USB Type-C	Not provided
Playback with case, AAC, ANC on Sources OnePlus Buds 4 Manufacturer specification · Music playback with the case, AAC, ANC on and 50% volume. OnePlus Test Laboratory claim; actual performance varies. OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	24 h	Not provided

DriversDifferent Sources OnePlus Buds 4 Manufacturer specification · Woofer: 30-layer ceramic-metal diaphragm; tweeter: flat diaphragm. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a Manufacturer specification Google Store (UK) — Pixel Buds 2a Technical Specs	Dual drivers: 11 mm woofer + 6 mm tweeter	Custom-designed 11 mm dynamic driver (each earbud)
Frequency response Sources OnePlus Buds 4 Manufacturer specification OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (US) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	15 Hz to 40 kHz	Not provided
DAC Sources OnePlus Buds 4 Manufacturer specification OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a No source recorded.	Dual DACs: a dedicated DAC for each driver (11 mm woofer and 6 mm tweeter)	Not provided
Spatial audio Sources OnePlus Buds 4 Manufacturer specification · Marketed as OnePlus 3D Audio. Set through Earbuds Function on OnePlus phones running Android 12 or later, or through HeyMelody for other iOS/Android 7 or later users. These pages do not explicitly establish head tracking. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a No source recorded.	Spatial audio rendering	Not provided
Listed driver impedances Sources OnePlus Buds 4 Manufacturer specification · The table gives two values but does not explicitly assign them to a named driver or a headphone input/load condition. Do not invent a woofer/tweeter assignment or amplifier compatibility result. OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	18 Ω ± 15%; 10 Ω ± 15%	Not provided
Manufacturer sensitivity and reference Sources OnePlus Buds 4 Manufacturer specification · Buds 4 names a 1 mW input but no frequency or test fixture. Buds Pro 3 names 1 kHz and the literal “Input: -10 dB IEC711” notation, without identifying that input in volts or milliwatts. These do not provide sensitivity on the same basis; do not convert or rank them. OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	118 ± 1.3 dB at 1 mW	Not provided
Unreferenced advertised sound pressure Sources OnePlus Buds 4 Manufacturer specification · No frequency, input reference, weighting or explicit maximum label is supplied in this row. Do not reinterpret as maximum SPL or sensitivity. OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	96.5 dB	Not provided
Manufacturer rated power Sources OnePlus Buds 4 Manufacturer specification · The Audio table does not explicitly assign this rating to an individual driver or define a continuous/peak basis. No power-handling or sound-quality ranking is established. OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	10 mW	Not provided
Headphone chip Sources OnePlus Buds 4 No source recorded. Google Pixel Buds 2a Manufacturer specification Google Store (UK) — Pixel Buds 2a Technical Specs	Not provided	Google Tensor A1 (each earbud)

Microphone Sources OnePlus Buds 4 Manufacturer specification · Three microphones per earbud with 3-mic AI call noise cancellation. OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a Manufacturer specification · Two microphones per earbud; Clear Calling and wind-blocking mesh covers. Google Store (UK) — Pixel Buds 2a Technical Specs	Yes	Yes
Active noise cancellation Sources OnePlus Buds 4 Manufacturer specification · Real-time adaptive ANC advertised up to 55 dB and up to 5,500 Hz; modes: ANC on, Adaptive, Transparency and ANC off. The overview advertises 800 adjustments per second and a 200% voice-cancellation improvement (3×) against OnePlus Buds 3, based on OnePlus Test Laboratory results. These claims do not compare against Buds Pro 3, and no matched attenuation test is supplied. TÜV High Performance Noise Cancellation is a manufacturer-listed claim, not independently re-certified here. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a Manufacturer specification · Active Noise Cancellation with Silent Seal 1.5, plus Transparency mode and active in-ear pressure relief. Google Store (UK) — Pixel Buds 2a Technical Specs	Yes	Yes
Manufacturer microphone sensitivity Sources OnePlus Buds 4 Manufacturer specification · Buds4 gives no dBV/Pa reference; Pro3 explicitly gives dBV/Pa. These different bases cannot establish a microphone-performance difference. OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	-38 ± 1 dB	Not provided

Companion app Sources OnePlus Buds 4 Manufacturer specification · Golden Sound (and OnePlus 3D Audio) is set in 'Earbuds Function' on OnePlus phones with Android 12 and above; other users (iOS / Android 7.0 and above) need the HeyMelody app. The specification page also lists OTA updates. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a No source recorded.	Compatible with the HeyMelody app. Sound features: Sound Master EQ (Balanced, Serenade and Bass Mode presets, a customisable six-band EQ and BassWave); Golden Sound personal audio profile from an ear scan and listening test	Not provided
Find My Earbuds Sources OnePlus Buds 4 Manufacturer specification · Listed by name only; OnePlus does not describe how it works on these pages. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a No source recorded.	Yes	Not provided
AI Translation Sources OnePlus Buds 4 Manufacturer specification · Three earbud taps activate AI Translation on the OnePlus phone; available on select OnePlus devices with OxygenOS 15.0.1 and above. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a No source recorded.	Yes	Not provided
Earbud controlsDifferent Sources OnePlus Buds 4 Manufacturer specification · Single tap must be manually activated in the phone Settings (OnePlus phones) or the HeyMelody app (other Android and iOS). OnePlus also lists a tap for the phone's built-in voice assistant (activated manually in the same way), Double-Tap for Camera Control and three taps for AI Translation on select OnePlus devices. OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a Manufacturer specification Google Store (UK) — Pixel Buds 2a Technical Specs	Touch controls on the stem: slide up or down for volume; long touch and hold to switch between Noise Cancellation and Transparency modes; single tap to play or pause; double tap for the next song; triple tap for the previous song	Capacitive touch (tap) for music, calls and voice assistant; IR proximity in-ear detection
Security updates Sources OnePlus Buds 4 No source recorded. Google Pixel Buds 2a Manufacturer specification · Counted from when the device first became available on the Google Store in the US. Google Store (UK) — Pixel Buds 2a Technical Specs	Not provided	Automatic security updates for at least three years

Show unverified (3)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.

Specifications without verified values for either product
Wireless case charging Sources OnePlus Buds 4 The complete reviewed exact pages list USB-C charging but do not explicitly establish wireless-charging presence or absence. Omission does not mean false. · Manufacturer specification OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a No source recorded.	Not listed by the manufacturer	Not provided
Spatial audio head tracking Sources OnePlus Buds 4 No explicit head-tracking presence or absence is established in the complete reviewed Buds4 pages. OnePlus3DAudio alone does not prove head tracking. · Manufacturer specification OnePlus (UK) — OnePlus Buds 4 Specs OnePlus (UK) — OnePlus Buds 4 overview Google Pixel Buds 2a No source recorded.	Not listed by the manufacturer	Not provided
Bone-conduction voice pickup sensor Sources OnePlus Buds 4 The complete reviewed Buds4 pages describe three microphones per side but do not establish VPU presence or absence. · Manufacturer specification OnePlus (UK) — OnePlus Buds 4 Specs Google Pixel Buds 2a No source recorded.	Not listed by the manufacturer	Not provided

First product manufacturer source Second product manufacturer source

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Weight per earbud: 5.28 g
Wearing style: In-ear, true wireless (ear tips in XS, S, M and L)
Wired / wireless connections: Bluetooth 5.4 with Steady Connect; LHDC 5.0, AAC and SBC codecs; dual-device connection

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Samsung Galaxy Buds3

Weight per earbud: 4.7 g
Wireless audio connections: Bluetooth v5.4 (Bluetooth Version); A2DP, AVRCP, HFP, PBP, TMAP (Bluetooth Profiles); LE Audio (yes); Auto Switch (yes)
Microphone: Yes

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Samsung Galaxy Buds4

Weight per earbud: 4.6 g
Wireless audio connections: Bluetooth v6.1 (Bluetooth Version); A2DP, AVRCP, HFP, PBP, TMAP (Bluetooth Profiles); LE Audio (yes); Auto Switch (yes)
Microphone: Yes

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Sony LinkBuds Fit

Weight per earbud: 4.9 g
Wearing style: In-ear true wireless earbuds with fitting supporters
Wired / wireless connections: Bluetooth 5.3; Classic Audio or compatible LE Audio (LC3)

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Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.