... inside Wide Input solar voltage Range with DC 5V , mobile charge socket Solar power integrated DC system compact size Wide Input solar voltage Range ... solar panel and load connection outside, more conveniently with MP3,mobile phone USB charging function(USB 5Vdc output) MODELsolar DC-20WSolar DC-40WSolar DC ... *260*178mm238*260*178mm392*335*180mm392*335*180mmWeight(Kg) Solar system DC -20W,40W,60W,100W