mini speaker support SD Card,U-flash, 3.5mm audio output built-in battery,7 hours mini size:300*45*45mm 1.5inch speaker the ... of our mini speaker1,it can play music automatic by the support of the following device:A,memory card,such as SD/MMC card,U ... Part number:SG-589 mini portable multimedia speakerinterface:USB,SD card,3.5mm stereo jacksupport resource:U-disk,MMC/DC card,PC,MP3/MP4Power supply ...