... -DC 5.0V,IN -power on/off Pcb with LED display(Mini audio board) Function and features:MP3/SD/USB Card ... reader, fm radio and digital screen display, with power on/off bu remote control, and so ... play music-Support MP3-With FM radio- With digital display- Support display of date and time, and synchronous lyrics-Connect external ... feel free to contact with us.pcb Pcb with LED display