mini speaker support SD Card,U-flash, 3.5mm audio output built-in battery,7 hours mini ... number:SG-589 mini portable multimedia speakerinterface:USB,SD card,3.5mm stereo jacksupport resource:U-disk,MMC/DC card,PC,MP3/MP4Power supply:DC 5v ... ∨ screen∨ electronical parts ∨ workshop assembly∨ our final advantage:high quality with low price accessories: 3.5mm audio cable:1pcsUSB cable1pcsfunction:connect ...