Name:Wireless Charging Active Noise Cancelling headset ANC ANR Bluetooth Head                    
◆Bluetooth Version CSR4.1
◆Frequency Range 2.402-2.480GHZ,2.4G
◆Receive Sensitivity 119dB
◆Operation Range 10m
◆Charging time 2.5 h
◆Working time 20 h
◆Impedence 32 ohm
◆Charger output 5V 130mA
◆Color Black