Let there be light， and there was light.There was light， there was power.High capacity 11200mAh external backup battery for your mobile phones and tablet*Designed to provide power for your mobile phones.tablet*be compatible with MP3， MP4， and other mobile phones... *the USB output， more convenient. *High efficiency of power conversion. *Electricity-saving function. *Can solar battery charging， also can use the charger*Partable， practical and long cycle life. *Safe and reliable， perfect for using on travelling and outdoor activities.*There are instructions in English