Microphone: capacitance
Output power: 5W (speaker output)
Frequency response range: 30Hz~20KHz
Maximum sound pressure level: 1Khz THD <1% >115dB
Impedance (speaker): 4
Reverberation mode: echo effect reverberation
Transmission mode: Wireless Bluetooth
Power supply: 4.2V polymer lithium battery
Battery capacity: 1000mAh
Life time: 11~14H
Charge: 400~500mA/5V
Charging time: 3H