Specifications:

1.Capacity: 20800mAh
2.Input：5V DC 1A/2A
3.Output: 5V DC 1A/2A
4.Case Material: plastic 
5.Color: White
6.Weiget: about 455.3g
7.Dimension: 171*79*22.7(mm)
8.Charge Tip: Dual micro USB
9.Discharge Tip: Dual USB

Function introduction:

1.Button: Click the button and start working. It will work immediatly when connected with digital device.
2.Indicator: LCD indicate the capacity; LCD will turn off automatically if the item don't work in 10 seconds. 
3.With 2 LED flashlight, dublue click the button the flashlight on(off).
4.Protection: Over charge, over discharge, over voltage, short circuit protection.