Support MP3,WMA,WAV,ASF audio formats Power-off memory,can set sleep mode and energy saving mode for your convenient use 7 EQ modes of normal,rock,pop,classic,soft,jazz and DBB U-disk,build-on USB,disk management function Support multi-playing modes such as normal mode,single song repeat,song list repeat,all songs repeat,random playing,browse playing 7-color splendid backlight,one AAA alk aline battery Record/repeat function,can record via mocrophone and save as WAV and ACT audio files,can make choice between segment repeat and contrast repeat,realizing real digital repeat function Support 12 languages operational menu,displaying title and lyric Firmware upgradeable,provide download servive of the latest upgrade software on our homepage Multi optional music effect equalizwr,FM tuner radio receiver(optional) Dimension:90X33X22mm