Bluetooth 4.0
Talk time 5 Hours
Music time 4.5 Hours
Charging time 2 Hours
Microphone Size : 4015 Wire : 25 mm Sensitivity : ~44+/-3db
Model BS200
Power Supply Li-polymer battery 100 MA/H
Working Voltage 3.7V
Brand WK
Speaker Impedance : 16+/-15%
Sensitivity : 110+/-3DB