Version:Build V4.2
transmission frequency:2.4GHz
Battery: 60Mah with Protect IC
Talk time: 3hrs
Standby tiime:120hrs
Charging time: 2hrs
Working Current:22mA
Standby Current:1mA
Data interface: USB2.0
Input interface：USB stereo
Cable length：65cm
Function:
Control Volume and Calling
Music Previou/Next/Pause/Start