mini speaker support SD Card,U-flash, 3.5mm audio output built-in battery,7 hours mini size: ... of the following device:A,memory card,such as SD/MMC card,U-Disk,etcB,mobile device,such ... -589 mini portable multimedia speakerinterface:USB,SD card,3.5mm stereo jacksupport resource:U-disk,MMC/ ... music player/loudspeaker/color:silver,black,ect technical parameter: Output power: 5W(2.5w+2,5w)Loud speaker ...