Solio Solar-Powered Charger and Battery for iPod Compatibility: iPod mini; iPod 3G, 4G, 5G, 5.5G; iPod nano 1G, 2G; iPod shuffle 1G Solar-powered battery charger One hour of charging in the sunlight will provide approximately 1 hour of playtime for an iPod Can store energy for more than one year Fan-blade design that allows it to achieve maximum solar area when in use