Model NO. PB-4400X6  Batteries Type: 18650 lithium battery * 2  Batteries Brand: LG  Batteries capacity: 4400/5200/6000 mAh  Input voltage / current: 5V/850 ~ 1000mA  Output voltage / current: 5V/2000mA  Charging time: about 6.5hr  Housing material: ABS  Color: Gold, Silver, Black, Burgundy, Brown, Blue, Yellow, White  Warranty: One year  Size: 110(L)*40(W)*35(H) mm  Power display: there are three LED lights are: red, green and blue, press the black button on the rear, LEDs Show power  Charging indicator: When charging, three LED lights flashing regularly; When full, LED lights all off