... .5"speaker built-in Li battery,1000mAh/DC 5V mp3 speaker size:300*45*45mm the functions and the ... ,U-Disk,etc B,mobile device,such as PC,mp3/mp4 player,Mobile phone,etc2,it has a small ... stereo jacksupport resource:U-disk,MMC/DC card,PC,MP3/MP4 playerPower supply:DC 5v/Li battery,1000MAH,7-- ... cable connect external sound source such as PC,phone,MP3 player.etc1 pcs USB cableconnect your PC for charging ...