1.suitable for promotion and gift. 2.built-in poly-lithium battery: 1000mAH 3.input: 5V/500mA 4.output voltage: 5.5V 5.output current: 500mA 6.Charging time: about 60 minutes(the time is a little different for different mobile phone)" 7.To charge the build in battery in the charger using solar energy: 10-15hours 8.To charge the build in battery in the charger using computer or AC adapter:2~3hours 9.size: 95(L) * 43(W) * 12(H) mm