... -Mini audio board -SD/ USB card reader ,FM radio -ABS,oblong -MP3 decoder board ... with AUX line in SD USB Card reader,universal MP3 Decoder Board(Mini audio board) Function ... and features:micro card reader,SD/USB MP3 Decoder Board, fm radio and ... around 5 R&D StaffProduct Line: mini Card& USB reader speaker, portable FM radio speaker, mobile speaker, active ...