... CE,ROHS,ISO etc 2,professional amplifier,with USB,TF,MPS input 3,several colors to selection:black ... -stage performance, teacher guide and so on. Function:1,with USB,TF,MP3 input2,FM radio with antenna3,with ... echo4,with LCD digital screen,size:30x22 mm5,with the function ... ROHS,CE,ISO 9001 certificate Portable Multi-function Remote Control Megaphone GP955R