Bluetooth Version: Vmicro 3.0
Frenquency: 2.402-2.480GHz.
Max Power Output: 2W
Mic Sensitivity: -38db
Sensitivity: Better than -82dbm
Range: 10-30meters
Charing Voltage: 4.8v-5.2v
Working Voltage: 3.7v-4.2v
Working Current: 180MA
Quiescent Current:  >1UA
Battery: 350mAh Polymey LI

Wirless Bluetooth Input
Handsfree function
TF Card function
Play pause,Upper and lower curved switching

Self-timer (Camera Shutter)
FM function