AC power: AC 100 - 250 V/50-60 Hz
DC power: DC 12V 2.2Ah Li-ion battery internal
External DC power: External DC 12V 2.5A
Peak of music power: 120 Watt max
Speaker: 6.5" 4 Ohm Full Range
Frequency Range: UHF 668-697 MHz
MP3 remote effective range: 10 m max
Wireless effective range: 50 m max
Full charged operating time: 2.5 Hours in max volume play MP3
Li-ion battery charge time: 3-4 hours
Working temperature Charge : 0°C - 45°C
Working temperature Discharge : -20°C - 55°C
Working temperature Storage : -5°C - 35°C
Built in features: USB/SD card play MP3 & record function; FM function