Redmi Buds 4 Active wireless headphones, black

Weight: 35 g
Equipment: Headphones, charging case, user manual
Design: Liners
Product color: Black
Description: Design: in-ear, device type: wireless headphones, ANC active noise reduction system, design features: waterproof, for children, for sports, microphone, case charging type: USB Type-C, plug connector: USB Ty
Width: 63
Height: 53
Additional Information: Environmental protection degree: IPX4. Built-in noise canceling microphone.
Plug connector: USB Type-C
Functions: Surround sound, headphone search, volume control
Working hours: 28 h
Battery capacity: 440 mAh
Thickness: 24 mm
Standby time: 28 h
Talk Time: 5 h
Impedance: 32 ohm
Design features: Moisture protection, for children, for sports, microphone
Charging time: 1.5 h
Device type: Wireless headphones
Mount type: Without attachment
Maximum playback frequency: 20000 Hz
Minimum repeatable frequency: 20 Hz
Technology: Dynamic
Number of microphones: 1
Fast charging: 10 minutes of charging is enough for 110 minutes of work
IP protection class: IPX4
Bluetooth version: 5.2
Membrane diameter: 12 mm
Type of acoustic design: Closed
Supported codecs: AAC, SBC
Case charging time: 2 h
Charging case height: 53 mm
Charging case depth: 24 mm
Case battery capacity: 440 mAh
Case charging type: USB Type-C
Charging Case Width: 63 mm
Weight of one earpiece: 365 g
Active Noise Canceling ANC: There is
Battery life in case: 5 h
Battery life with Active Noise Cancellation enabled: 5 h
Battery capacity for one earphone: 34 mAh
Number of drivers: 1