Solar battery chargers have been around for a long time, but because of many recent advancements in technology, their popularity has increased. The waterproof universal solar power iphone charger provides a sleek, stylish, compact and very durable source of solar power for your tablets, iPods, iPhones, Blackberries, most PDA devices, music players, E-readers, Cameras and GPS devices and more. Iphones can be charged easily with the included USB adapter. The smart chargers, automatic shut-off function turns the solar charger off after the device has been fully charged.