1.0.6W mono-crystalline silicon solar panel. 2.Built-in 1,400mAh Lithium battery. 3Voltage(5.8V/7.8V/9.8V) is adjustable according to your device's charging voltage, and can charge all mobile phones freely. 4.5 mobile phone adapters included(Nokia/Motorola/Samsung/Sony Ericsson) 5.Charging time for mobile phone:2.5-3 hours 6.Keep the solar panel side facing the sunlight(Charging time is about 14hours) 7.Use an AC/DC charger to charge it for about 7hours(Switch off U/V)