... on-stage performance, teacher guide and so on. Function:1,with USB,TF,MP3 input2,FM radio with ... with LCD digital screen,size:30x22 mm5,with the function: calendar,alarm clock,showing song lyric,etc.6, ... with no leads or cords attaching you to one point Battery (lithium battery) use time long, can reach ... With ROHS,CE,ISO 9001 certificate Portable Multi-function Remote Control Amplifier Speakers GP955R