Portable power pack dual usb charger battery capacity 5 000 mah interfaces microusb usb interace output 2x usb type a power output max 2 dimensions 73 x 55 x 11 mm weight 125 g features battery indicator included in delivery micro usb cable colour black rechargeable battery technology li polymer output voltage 5 v operating voltage 5 v material plastic applications smartphone camera mp3 player securities automatic switch off overcharge protecti