UPsztec 4.7 Inch Solar Battery Clip Charger Case 3000 mAh Power bank For Iphone 6 6s 7 7S (Black) Shape exquisite fashion Model generous Work excellence Fashion elegant Convenient to carry out ! High capacity :3000mah use high capacity Li-Pol cells Safety: Built in 9 layers smart protect system,in case of over charging,over releasing,over current,over voltage Supports solar battery to charge (solar battery is 5V) this power. Supports notebook USB to charge this power. It is a green product.