Features: Comes with one USB cable and 4 connectors(30pin, micro USB, mini USB, DC3.5), universal to meet charging needs of different phones or tablet PCs, such as iPhone 4/4s/3g/3gs, iPad 2/3, Samsung, Nokia, etc. Built-in 5000mAh high capacity lithium-ion battery for emergency use, and charged by solar power or via the mini USB port. Built-in intelligent control circuit brings multi-protection against overcharge, overdischarge, overload, overheating and short circuit. Dual USB 2.0 output with LED indicator light to show the charging status and the battery level. Quick charging and high efficiency of power conversion. Environmental friendly, energy-saving, portable and practical.