Speaker For Mobile Phone 4g,self-powered speaker -no batteries,no cables ,no Electricity no ... power -wireless -portable Speaker For Mobile Phone 4g,self-powered speakerModel: LS-801Size: 17.1x13.3x4.2cmGross Weight: ... not require any battery, it is a self-powered iPhone speaker2)amplify your iPhone with ingeniously designed,placed ... pictures : Speaker For Mobile Phone 4g,self-powered speaker