Bluetooth version: Bluetooth 5.0

Supported Protocols: A2DP/AVRCP/HFP/HSP

Bluetooth chip: QCC3020/BK/CSR

Operating frequency: 20Hz - 20kHz

Speaker diameter: 10mm

Speaker impedance: 32 ohms

Battery: Lithium polymer battery, 260mAH

Music playback time: 22 hours

Call duration: 24 hours

Charging port: USB

Earphone type: In-ear

Supports multi-point connections

Supports hands-free function

Weight: 10g

Dimensions (Length * Width * Height): 59*16*10.5m