OnePlus Buds 4

Name: OnePlus Buds 4
Brand: OnePlus
SKU: 3298

Manufacturer: OnePlus

The OnePlus Buds 4 are true wireless earbuds that combine a lightweight 9.46 g in-ear design with a practical feature set suited to everyday listening and hands-free use. Each earbud sits comfortably without neckbands or wingtips, and the included charging case extends total playback to 45 hours combined. A built-in translator, find-device function, ambient sound mode, and multipoint connection to two devices simultaneously round out the day-to-day usability.

On the technical side, the OnePlus Buds 4 use an 11 mm driver covering a frequency range of 15 Hz to 40,000 Hz, supported by spatial audio and LDHC codec alongside AAC. The six-microphone array includes noise-canceling mics for clearer calls, while active noise cancellation delivers up to 6 hours of ANC playback and passive noise isolation adds a further layer of attenuation. Connectivity runs over Bluetooth 5.4 with fast pairing support, a maximum wireless range of 10 m, and an audio latency of 47 ms. The case charges via USB Type-C, and fast charging is supported, bringing the buds to a usable charge in roughly 80 minutes total.

Pros

Active noise cancellation and passive noise isolation work together to block out ambient sound during listening
Six-microphone array with noise cancellation supports cleaner voice pickup during calls
Multipoint connection allows simultaneous pairing with two devices at once
Built-in translator adds a practical communication tool without needing a separate app
In/on-ear detection automatically pauses playback when the earbuds are removed
A travel bag is included in the box, adding everyday portability without extra accessories needed

Cons

Wireless charging is not supported, requiring a cable for every recharge
ANC reduces battery life from 11 hours down to 6 hours, a significant drop during active use
No aptX codec support in any variant, which limits high-quality audio options for non-LDHC or non-AAC sources
Maximum Bluetooth range of 10 m is relatively short for an untethered wireless experience
Notification readout is not available, reducing hands-free convenience for incoming alerts

Who is this for?

The OnePlus Buds 4 are well-suited to users who spend a significant part of their day on calls or in noisy environments, thanks to the six-microphone noise-canceling array and active noise cancellation that together help maintain audio clarity in both directions. The multipoint connection makes them a practical choice for people who regularly switch between two devices, such as a phone and a laptop, without the need to manually re-pair. Commuters and light travelers will also find the IP55 water resistance, included travel bag, and built-in translator useful for everyday mobility and occasional international use.

Who is this NOT for?

Users who prioritize the highest possible audio fidelity will find the codec selection limiting, as LDAC and all aptX variants are absent, leaving only LDHC and AAC for wireless transmission. Those who rely heavily on hands-free convenience may also be disappointed, since notification readout is not supported, meaning incoming alerts cannot be announced audibly without interaction. Additionally, users who want the flexibility of wireless charging — whether for desk pads or travel-friendly charging solutions — will need to rely entirely on a wired USB Type-C connection every time the case needs to be topped up.

Design:

Fit	In-ear
Ingress Protection (IP) rating	IP55
water resistance	Water resistant
weight	9.46 g
has no wires or cables	✓
are neckband earbuds	✕
wingtips included	✕
has RGB lighting	✕
has stereo speakers	✓
has UV light	✕
Has a display	✕

The OnePlus Buds 4 feature an in-ear fit and a true wireless design with no cables or neckband, and wingtips are not included. Each earbud weighs just 9.46 g and carries an IP55 rating, making them resistant to water and dust ingress. Stereo speakers are built in, while RGB lighting, a UV light, and a display are all absent from the design.

Sound quality:

has active noise cancellation (ANC)	✓
has passive noise reduction	✓
driver unit size	11 mm
lowest frequency	15 Hz
highest frequency	40000 Hz
supports spatial audio	✓
has Dolby Atmos	✕
has Dirac Virtuo	✕
impedance	18 Ohms
sound pressure level	96.5 dB/mW
has a neodymium magnet	✕

The OnePlus Buds 4 deliver sound through an 11 mm driver covering a wide frequency range of 15 Hz to 40,000 Hz, with an impedance of 18 Ohms and a sound pressure level of 96.5 dB/mW. Both active noise cancellation and passive noise reduction are supported, and spatial audio is available, while Dolby Atmos and Dirac Virtuo are not. The drivers do not use a neodymium magnet.

Power:

Battery life	11 hours
Battery life of charging case	34 hours
Battery life (ANC)	6 hours
charge time	1.333 hours
battery power	62 mAh
battery power (charging case)	530mAh
has wireless charging	✕
Has a solar power battery	✕
has a battery level indicator	✓
has a rechargeable battery	✓

The OnePlus Buds 4 offer 11 hours of battery life per charge, dropping to 6 hours when active noise cancellation is enabled, while the 530 mAh charging case contributes an additional 34 hours for a combined total runtime. Each earbud holds a 62 mAh battery and takes approximately 1.333 hours to fully charge. The battery is rechargeable and includes a battery level indicator, though wireless charging and solar charging are not supported.

Connectivity:

has fast pairing	✓
Has USB Type-C	✓
Bluetooth version	5.4
has LDAC	✕
has LDHC	✓
has Bluetooth LE Audio	✕
has aptX Adaptive	✕
has aptX Low Latency	✕
has aptX HD	✕
has aptX	✕
has aptX Lossless	✕
audio latency	47 ms
has aptX Voice	✕
has Auracast	✕
maximum Bluetooth range	10 m
supports Bluetooth pairing using NFC	✕
Can be used wirelessly	✓
has AAC	✓

The OnePlus Buds 4 connect wirelessly via Bluetooth 5.4 with a maximum range of 10 m, and support fast pairing for quick device setup. Supported audio codecs include LDHC and AAC, while LDAC, aptX (in all its variants including Adaptive, HD, Low Latency, Lossless, and Voice), Bluetooth LE Audio, and Auracast are not available. Audio latency is rated at 47 ms, and NFC pairing is not supported. The charging case uses USB Type-C for wired charging.

Features:

has ambient sound mode	✓
has in/on-ear detection	✓
has find device feature	✓
Supports fast charging	✓
multipoint count	2
can read notifications	✕
Has a built-in translator	✓
has a mute function	✓
can be used as a headset	✓
control panel placed on a device	✓
Has voice prompts	✓
travel bag is included	✓
Has an in-line control panel	✕
Has a temperature sensor	✕
Has a built-in camera remote control function	✕

The OnePlus Buds 4 include a practical set of features for daily use, among them ambient sound mode, in/on-ear detection for automatic music pausing, a find-device function, and a built-in translator. They support fast charging, connect to up to two devices simultaneously via multipoint, and can be used as a headset with a mute function and voice prompts. Controls are handled through a device-based control panel rather than an in-line panel, and a travel bag is included in the box. Notification readout, a body temperature sensor, and a camera remote shutter function are not available.

Microphone:

number of microphones	6
has a noise-canceling microphone	✓

The OnePlus Buds 4 are equipped with a total of 6 microphones, and noise cancellation is applied to the microphone array to help reduce background sound during calls and voice input.

Final Verdict

The OnePlus Buds 4 present a well-rounded set of wireless earbud specifications aimed at users who value everyday practicality over audiophile-grade performance. The combination of active noise cancellation, a six-microphone noise-canceling array, and multipoint connectivity to two devices positions them as a capable companion for commuters, remote workers, and frequent callers. Codec limitations and the absence of wireless charging mean they fall short for users with more demanding audio or convenience requirements, but within their intended scope — reliable daily use with solid call quality and a broad feature set — the OnePlus Buds 4 deliver a coherent and functional package.