Operating voltage: 7.2-9V
Charging time:4-5hour
Charger:DC 10V/500mA
Frequency response:300Hz-20kHz
Maximum output power:≥20W
Output impedance: 8Ω
Recording time: 12second
Battery life: Continuous usage18-22Hour (shouting) product weight:577gram(Battery free)
Shape size:270*162*215mm