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 15% 2.Solar panel specification: 5V/70mA 3.The built-in high capacity rechargeable polymer lithiumion battery: 1500mAH 4.Output voltage: DC5.5V±0.2V 5.Output current: 400-800mA 6.Time for charging a mobile phone: about 60 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:about 5 hours 9.Overall Size: 10.5 x 5 x 1.3 cm 10.Color:Black / blue / gray 11.Packaging:Neutral Package Box 12.Accessories:AC Adapter1PC,AC Input Line1PC,Charger Output Lin