... 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, ... power source, collecting the power from an ordinary wall outlet and storing it up in a set of capacitors ... AdaptorWith ROHS,CE,ISO 9001 certificate Portable Multi-function Remote Control Megaphone GP955R