... computer, U disk and SD card to enjoy the music.2.Several power supply manners including battery, computer USB, ... the same time when play music using the USB power.4.ANT: When use the FM audio, you must put ... the audio cable into the FM antenna hole as an antenna.High efficiency: 1 ... audio box with new concept integral stereo portable mobile music,connecting your MP3,MP4,CD,DVD,iPod,iPhone, ...