Bluetooth version: Bluetooth 5.0
Chip: QCC 3020
Supported protocols:A2DP,HFP,AVRCP,HSP
Working frequency:20HZ-20KHZ
Horn diameter:10mm
Speaker impedance:16ohm
Battery:lithium polymer battery,180mAH
Music playback time:about 12-16 Hours
Talk time:about 16 Hours
Standby time:about 120 Hours
Charging time:about 2 Hours
Charging port:TYPE-C
Headphone call noise reduction:support
Headphone call mute:support
Wireless transmission distance:10-15 meters(open space)