Bluetooth version:Bluetooth 5.0
Support protocol:A2DP/AVRCP/HFP/HSP
Bluetooth chip:QCC3020/BK/CSR
Working frequency:20HZ-20KHZ
Horn diameter:10mm
Speaker Impedance:32 ohm
Speaker power:7mW
Battery:lithium polymer battery,260mAH
Music playback time:22 Hours
Call time:24 Hours
Standby time:30 Days
Charging time:2 Hours
Charging port:USB
Surface treatment:UV spray +electroplating
Weight:10g
Dimensions(L*W*H):59*16*10.5mm