Specifications:
Color: Black, Red
Bluetooth chip and Bluetooth version: CSR 4.1
Bluetooth protocol: A2DP AVRCP HFP HSP
Battery: 3.7V 60mAh
Charging power: 5V / 80mAh
Sensitivity: 103db +/- 3dB
Impedance: 32Mw
Transmission distance: Accessible 10m
Frequency: 2.4GHz
Talk time: about 4 hours
Time: about 5 hours
Standby time: about 160 hours