1.Mono-crystalline silicon wafers or multi-crystalline silicon wafers with high conversion efficiency are used,which enables a high solar energy conversion efficiency of over 16% 2.Solar panel specification:5.5V/50mA 3.The built-in high capacity rechargeable polymer lithiumion battery:1300mAH 4.Output voltage:5V 5.Output current:800mA 6.Time for charging a mobile phone:about 90 minutes(the time may vary slightly depending on mobile phones lf different brands and models) 7.Time for charging the built-in battery through solar energy: 10-15hours 8.Time for charging the built-in battery through a compute of AC adaptor:5hours 9.Machine Weight:56g 10.Overall Size:6.5*6.1*1.4cm 11.Color:White 12.Packaging:Neutral Package Box 13.Accessories:Charging cable1PC