mini u-disk and sd card speaker 1.Support MP3, WMV file 2. ... replaceable battery Mini u-disk and sd card speaker mini u-disk and sd card speaker1.Support MP3, WMV file2 ... and replaceable battery Specifications: 1) Play music from USB,SD/MMC card ,support MP3 format2) With AUX port,also ... port, Li-ion battery or DC 5V10) Product size: 220*35*70mm11) Net weight(include accessories and packages):0.35kg ...