... speaker support SD Card,U-flash, 3.5mm audio output built-in battery,7 hours mini size:300*45*45mm 1.5inch speaker ... A,memory card,such as SD/MMC card,U-Disk,etcB,mobile device,such as PC,mp3/mp4 player,Mobile ... player/loudspeaker/color:silver,black,ect technical parameter: Output power: 5W(2.5w+2,5w)Loud speaker ... ,etc.and our digital products covers from Mp3 player/Mp4 players,to mini speakers,etc.We ...