BT version: JL
Speaker diameter: 40mm
Impedance:32Ω±15％
Sensitivty:110±4dB
Frequency respond:24Hz~24.8KHz
Speaker sensitivity: -42db±4dB
Battery capacity:300mA(602030)
Transmission distance: 10M
Microphone electric current: 100-500uA
Charge mode:Micro USB 5V/1A
Operating voltage: 3.7V 