Universal pcb Board -SD/USB,FM radio,LED -power on/off,last/next songs, volume, Pla/pau,repeat -DC5.0V IN -mp3 decoder ... board MP3/SD/USB pcb board with FM Radio(Mini audio board) Function and features:pcb board for MP3/SD ... function: last songs, next songs, volume control, Play/pause, repeatABS board in the whole setOEM & ODM ServiceODM & OEM service is availableCompany Brief ...