Operating voltage
100Hz to 20kHz (-3dB), 100Hz (>8dB)
Operating Temperatures
charge: 0 to 45°C; discharge: -20 to 55°C;storage: -5 to 35°C.
Function
USB/micro SD card slot to play, record and FM play function
Item
Waistband PA Amplifier
Power supply
7.4V DC, 2,200mAh lithium rechargeable battery