Nature Power 55010 Folding Solar Panel for 12-volt Charging, 10-watt 10-Watt monocrystalline solar panel for charging all portable devices via usb Magnetic closure and grommets for secure storing Folds into small size for easy portability Convenient side pouch for storage Can be used to charge Nature Power's Power Bank Elite 15 rechargeable battery pack (sold separately) for added portability