... USB power,you can play music while charging2 With FM radio funtion3 With EQ funtion,you can freely swith ... 0.4A-1A)power adapter,USB power available;OFF//ON: OFF switch will stop the sound,placed by ... the amplifier audio output ON.4 metal, more noble fashion, unipue, a variety ... UDisk and other memory card to play music files on the cars, in the leisure,entertainment and the ...