Smart Card mp3 Decoder Board with Screen -SD/MMC USB Card FM radio -ABS shell board -remote control -Rechargeable battery Product Name:sd usb Decoder Board, MP3 decoder boardMP3 decoder board, digital screen display, smart card reader, support mp3/USB SD/MMC, remote control, can be used in audio, speaker, amplifier, home theatre system, and so on Product No.: SW-002Technical parameters: ...