Bluetooth Version: Bluetooth 5.1
Protocols: A2DP, HFP, AVRCP, HSPChip: JL65E4
Operating Frequency: 20Hz-20kHz
Speaker Diameter: 52mm
Speaker Impedance: 4 ohms
Speaker Power: 3W
Battery: 500mAh Lithium Polymer
Music Playback Duration: 4 hours
Talk Time: 7 hours
Standby Time: 140 hours
Charging Time: 110 minutes
Charging Port: micro-USB
Built-in Microphone
Dimensions (L*W*H): 73.5mm73.5mm73.5mm