OnePlus Buds 4 True Wireless ANC Earbuds

The OnePlus Buds 4 True Wireless ANC Earbuds are designed for listeners who want detailed audio, powerful active noise cancellation, and convenient wireless connectivity in a compact everyday design. Featuring an 11mm woofer, a 6mm tweeter, and dedicated dual DACs, the Buds 4 are engineered to reproduce balanced sound with deep bass and clear high frequencies.With real-time adaptive noise cancellation of up to 55dB, Bluetooth 5.4, Hi-Res Audio support through LHDC 5.0, and up to 45 hours of advertised total playback with the charging case under specified conditions, the OnePlus Buds 4 are suitable for music, commuting, calls, and entertainment. Additional features include three-microphone AI call noise cancellation, transparency mode, dual-device connection, IP55-rated earbuds, and fast charging.

Key Features of OnePlus Buds 4 Earbuds

Dual Drivers and Dual DACs for Detailed Sound

The OnePlus Buds 4 use a dual-driver acoustic system featuring an 11mm woofer and a 6mm tweeter. The larger woofer is designed to handle lower frequencies, while the tweeter reproduces higher-frequency details, helping create a more differentiated sound presentation.Each driver is paired with its own dedicated DAC, allowing the audio system to control the drivers individually. This design is intended to improve frequency separation and support a listening experience with impactful bass, clear vocals, and detailed treble.Whether you listen to pop, rock, electronic music, hip-hop, podcasts, or videos, the dual-driver configuration is designed to accommodate a broad range of audio content. Actual sound quality will also depend on the recording, source device, selected codec, fit, and personal listening preferences.Audio tip: Try the Balanced, Serenade, and Bass Mode presets in Sound Master EQ to find a sound profile that suits your music. A secure ear-tip fit can also improve bass response and passive noise isolation.

Hi-Res Audio and LHDC 5.0 Support

The OnePlus Buds 4 support LHDC 5.0 alongside AAC and SBC Bluetooth audio codecs. On compatible Android devices, LHDC 5.0 supports advertised high-resolution transmission of up to 1Mbps, 24-bit depth, and a 192kHz sampling rate.High-resolution audio support depends on the connected smartphone, operating system, audio settings, application, and source material. OnePlus notes that Hi-Res Audio through LHDC 5.0 is not supported on iOS devices.For supported Android phones, OnePlus's earbud settings or the HeyMelody application can provide access to compatible audio features. Other devices may offer a different set of functions depending on software and hardware compatibility.The earbuds also support OnePlus 3D Audio and Golden Sound personalization. These features are designed to customize the listening experience, with availability depending on the connected device and supported software.

Real-Time Adaptive ANC and Transparency Mode

The OnePlus Buds 4 feature real-time adaptive active noise cancellation advertised at up to 55dB within a noise-cancellation frequency range of up to 5,500Hz. The system adjusts noise cancellation based on listening conditions to help reduce unwanted ambient sound.ANC can be useful on public transport, in busy offices, while travelling, or when listening in environments with continuous background noise. The actual reduction achieved depends on the type of noise, the fit of the earbuds, and the surrounding environment.Several noise-control options are available, including ANC on, Adaptive Mode, Transparency Mode, and ANC off. Adaptive Mode is designed to balance noise cancellation and awareness of the surroundings, while Transparency Mode allows more external sound to be heard.Important: Noise cancellation does not eliminate every sound and should not replace awareness of traffic, announcements, alarms, or other safety-critical sounds. Maximum ANC performance is based on manufacturer testing and may vary in everyday use.

Clear Calls with Three-Microphone AI Noise Cancellation

Each OnePlus Buds 4 earbud incorporates a three-microphone system that supports AI-assisted call noise cancellation. The system is designed to distinguish speech from environmental noise and help improve voice clarity during phone and online calls.This feature can be useful when making calls from offices, cafés, streets, or other locations with background noise. Wind, loud surroundings, network quality, and the microphone position can still affect the clarity of a call.The earbuds support common Bluetooth calling and audio protocols, including HFP, A2DP, and AVRCP. This provides compatibility with supported phones, tablets, computers, and other Bluetooth-enabled devices.For the best results, position the earbuds correctly and check microphone permissions and call settings on your connected device. Call noise reduction performance may differ across applications and devices.

Battery Life and Fast Charging

The OnePlus Buds 4 are advertised to deliver up to 11 hours of music playback from the earbuds alone with ANC off, using AAC at 50% volume under specified test conditions. With the charging case, the advertised total playback time reaches up to 45 hours under the same conditions.With ANC enabled, the advertised playback is up to 6 hours from the earbuds alone and up to 24 hours with the case using AAC at 50% volume. Playback time is shorter under some settings, including LHDC audio and ANC use.Fast charging provides up to 11 hours of combined playback from the earbuds and charging case after a 10-minute charge under OnePlus's specified ANC-off, AAC, and 50%-volume test conditions. This is a combined figure for the earbuds and case, not 11 hours of playback from the earbuds alone after a 10-minute earbud-only charge.Charging uses a USB Type-C interface. The official specifications list approximately 50 minutes to charge the earbuds and approximately 80 minutes for the earbuds and case, subject to the stated conditions.Battery tip: Volume level, ANC, codec, call frequency, connectivity conditions, and other active features can affect battery performance. Charge the earbuds and case before travel or extended listening sessions.

Bluetooth 5.4, Dual-Device Connection and Low Latency

The OnePlus Buds 4 feature Bluetooth 5.4 with Steady Connect, designed to provide stable wireless connectivity with compatible devices. The stated effective Bluetooth distance is approximately 10 metres under suitable conditions.Dual-device connection allows the earbuds to connect to two supported devices, helping users switch between sources such as a laptop and smartphone. Google Fast Pair is also supported on compatible Android devices for a more convenient pairing process.The earbuds advertise 47ms low latency under specified test conditions. Low latency can be useful for gaming and video viewing, although real-world performance depends on the connected device, application, wireless environment, and whether the relevant feature is enabled.OnePlus phones may offer additional ecosystem features, while users of other supported Android devices and iOS devices may need the HeyMelody app for certain controls and personalization options. Not every feature is available on every device.

Smart Controls and Personalized Listening

The OnePlus Buds 4 support touch controls for common listening tasks. A single tap can play or pause audio when enabled, double taps can move to the next track, and triple taps can move to the previous track. Touch-control availability and customization depend on the selected settings.Swiping up or down on the earbud stem adjusts volume, while touching and holding switches between noise cancellation and transparency modes. The supported controls can reduce the need to reach for a connected phone during everyday listening.Sound Master EQ offers three presets—Balanced, Serenade, and Bass Mode—along with a customizable six-band equalizer and BassWave enhancement. OnePlus 3D Audio and Golden Sound personalization are also supported on compatible devices and software.Additional features include Find My Earbuds, OTA software updates, voice-assistant access, and camera control on supported devices. AI Translation is available only on select compatible OnePlus devices and software versions, so it should not be assumed to work universally on every phone.

• For music listening: Use the dual-driver system, dual DACs, and compatible EQ settings to personalize audio playback.
• For commuting: Use adaptive ANC to reduce suitable types of surrounding noise and Transparency Mode when awareness is needed.
• For calls: Take advantage of the three-microphone AI call noise-cancellation system.
• For switching devices: Use dual-device connection to work between compatible devices without repeatedly pairing from scratch.
• For gaming and video: The advertised 47ms low-latency feature can help reduce audio delay when supported and enabled.
• For everyday convenience: Use volume swipe controls, Google Fast Pair, Find My Earbuds, and supported app features.

OnePlus Buds 4 Earbuds Specifications

Specification note: Specifications are based on OnePlus product information and the official specification listing consulted. Battery capacity, colours, package contents, pricing, and warranty terms may vary by market or listing. Playback figures are manufacturer estimates under specified test conditions, not guaranteed everyday results. IP55 protection applies to the earbuds, not the charging case. Hi-Res Audio through LHDC 5.0 and AI Translation require compatible devices and software; some features are unavailable on certain platforms.

Who Should Choose the OnePlus Buds 4?

Frequently Asked Questions (FAQ)

Why Choose the OnePlus Buds 4 True Wireless ANC Earbuds?

The OnePlus Buds 4 True Wireless ANC Earbuds combine an 11mm woofer, a 6mm tweeter, dual DACs, adaptive ANC of up to 55dB, Bluetooth 5.4, and compatible LHDC 5.0 high-resolution audio support. Their three-microphone AI call noise cancellation, customizable EQ, Transparency Mode, and dual-device connection make them versatile for music, calls, commuting, and everyday use.With advertised playback of up to 45 hours using the charging case with ANC off, fast charging, IP55-rated earbuds, and a range of smart features, the Buds 4 offer a feature-rich wireless listening experience. For the best experience, confirm compatibility with your phone and check local pricing, warranty coverage, and available colours before purchasing.