... speaker size:300*45*45mm support SD card,U-flash 3.5mm audio line built-in Li battery speaker ... U-Disk,etcB,mobile device,such as PC,mp3/mp4 player,Mobile phone,etc2,it has a small size,you ... silver,black,etc technical parameter: Output power: 5W(2.5w+2,5w)Loud speaker specification:1.5cm ,4ouhm,3wfrequency response ... for charging package: size of gift box:323.2*54.1*80.3mmweight:0.345.11Kgsize of carton ...