1,support USB FLASH and SD card,play mp3 format music 2,with FM radio 3,Built-in rechargeable lithium battery 4,AUX function Name ... / MS/ MMC card and USB Flash and play MP3 format music automatically and intelligently .2,FM radio function(Built-in FM antenna).3,Clock ... .6,AUX function.Standard 3.5mm audio output jack. USB Speaker with FM radio