Bluetooth Version: V4.2
Frequency Range:20Hz-20kHz
Sound Output:2.5mW
Sensitivity:99db+3db
DC Resistance:32Ω
Receiver Distance:Up to 10 meters
Battery Voltage: Inbuilt Rechargeble battery 120mAh
Charging Voltage:DC 5V
Working Time:Up to 3.5 hours
Color: Black
Sport Series