1. Solar Panel (mono or multi-crystalline): 0.61W
2. Output volt/current: 5.4V/600mA(max)+100mA(max)
3. Battery capcity: 3.7V/1900mA
4 Indication: Charging and discharging state
5. Protection: Reverse current protection circuit integerated to prevent batteries from being discharged
6. Charging time for the mobile phone: <3 hours (It is a little difference for different mobile)
7. Charging time for the Lithium polymer battery inside using the solar panel: 12-14 hours
8. Charging time for the Lithium polymer battery inside using USB charging cablel: 4-5 hours
9. Constant Volts: 4.2 V.