Quick DetailsColor: BlackPRODUCT PARAMETERSMatiralsolar panel +fabric(waterproof)Solar panelsunpower solar cell from USAMaximum power(Pmaz)20W Output voltage5VOperating current(Imp)3.6ASolar energy conversion22%Folding size260*165mmUnfold size660*265mmWeight0.5KGoutput interface USBRange of use Mobile phone, iPad,Tablet PC,Camera,power bank and other digital productsPRICE>100pcs  USD27/PCS    Advantages of:1. Imported Sunpower solar cells from US 2. High Efficiency: 22%-25% efficiency. 3. Much more elegant appearance: there are no grid lines on the surface of solar cells4. Own developed circuit board compliant with Android phones or iPhone 5. It's  light and easy to carry