Colour: Black Music format: MP3,WMA,WAV; Can be used as a usb flash ... USB 2.0No.:ER-M72Mp3 player1) Support MP3, WMA,WAV format music player2) High speed USB 2.0 (FS) interface3) Color ... ) Rechargeable li-battery build in10) E-book function, Support TXT format file read11)No driver needed under Windows ME,2000,XP or ...