... Mp3 to play music 2,FM radio 3,Remote controller ,board key operation 4,AUX port,connect PC,computer,etc. 5 ... lithium battery(Circuit with Charge Management)(charging time:4-5 hours, working time:up to 6 hours.)5, Infrared remote control function ... .6, AUX function. Standard 3.5mm audio output jack.7. Several sound efforts for choice. Portable Mp3 music player with ...