... assembly -DC 5.0V,IN -power on/off Pcb with LED display(Mini audio board) Function and features:MP3/SD/USB Card ... audio, multimedia speaker, subwoofer, amplifier, electronic products and so on.-Key function: last songs, next songs, volume control, Play/pause, repeatProduct ... and FM radio on multimedia speaker, mini speaker, active speakerRemarks: 1) More new designs are on the way 2) We do ...