Audio
Drivers
11mm woofer + 6mm tweeter
Frequency Response
15Hz~40KHz
Driver Sensitivity
118±1.3dB @1mW
Microphone Sensitivity
-38±1dB
Microphones
3 mics per side
Impedance
18Ω ± 15%, 10Ω ± 15%
Sound Pressure
96.5dB
Rated power
10mW
Noise Cancellation
Noise Cancellation Type
Real-Time Adaptive Active Noise Cancellation
Noise Reduction Depth
Up to 55dB
Noise Reduction Frequency Range
Up to 5,500Hz
Noise Control Modes
ANC on / Adaptive Mode / Transparency Mode / ANC off
3-mic AI Call Noise Cancellation
Connectivity
Bluetooth® Codec
LHDC 5.0 / AAC / SBC
Bluetooth® Version
Bluetooth® 5.4 with Steady Connect
Bluetooth® Effective Distance: 10m
Bluetooth® Transmission Protocol
HFP/A2DP/AVRCP
Connectivity
Dual-Device Connection
Battery
Battery Capacity
Earbuds: 62mAh
Charging Case: 530mAh
Playback (ANC Off, 50% volume, AAC)
Earbuds: 11 hours
Earbuds + Case: 45 hours
Playback (ANC On, 50% volume, AAC)
Earbuds: 6 hours
Earbuds + Case: 24 hours
Playback (ANC Off, 50% volume, LHDC)
Earbuds: 9 hours
Earbuds + Case: 37 hours
Playback (ANC On, 50% volume, LHDC)
Earbuds: 5.5 hours
Earbuds + Case: 22 hours
Talk Time (ANC Off, 50% volume, AAC)
Earbuds: 6 hours
Earbuds + Case: 24 hours
Talk Time (ANC On, 50% volume, AAC)
Earbuds: 4 hours
Earbuds + Case: 17 hours
Charging
Fast Charging (ANC Off, 50% volume, AAC)
Earbuds: 10 minutes charge for 3.5 hours playback
Earbuds + Case: 10 minutes charge for 11 hours playback
Charging Time (ANC Off, 50% volume, AAC)
Earbuds: about 50 minutes
Earbuds + Case: about 80 minutes
Charging Interface
Wired: USB Type-C
Special Features
OnePlus 3D Audio
Sound Master EQ
Golden Sound
47ms Low Latency
AI Translation
Voice Assistant Shortcut
Find My Earbuds
Double-Tap for Camera Control
IP55 Dust and Water Resistance
What's in the box
OnePlus Buds 4 x 1 pair
OnePlus Buds 4 Charging Case x 1
Type-C Charging Cable x 1
Ear Tips (S, M, L pairs; M pre-installed)
User Manual & Safety and Warranty x 1