EVA case speaker for iphone Customizing Size, color, logo CE,FCC,RHOS standard, ... ,3.5mm ect Heart shape EVA case speaker for iphone,MP3,Hot selling.eva speaker case specifications: 1) Material: PU and eva ... : battery(AA1.5V*2),DC 3.0V(OUTPUT 3V,300-800mA)Speaker unit:2W*1Output power:3W*1 4Ohms(1KHz 10% THD ...