... in USB' can connect with PC ,Mobile Phone , MP3 player,and iPod ,iPhone e USB slot on the front ... panel;auto play the MP3 files in USBwith class D Amplifier 5Wx2 ch THD 10 ... %3.5mm Aux in , can connect with PC ,Mobile Phone , MP3 player,and iPod ,iPhone etcplay/pause,next,prev,vol-,vol ... Power adaptors,DC 9V 1.5AMany colors selection: blue/ yellow computer speaker