Aluminum material.

0.375" H x 2.625" W x 4.75" L size.

4000 mAh lithium polymer grade A battery.

Allows you to charge two devices simultaneously with a total output of 5V/2A.

Input is 5V 1000mA, outputs 1:5V 2000mA and output 2:5V 1000mA.

Compatible with devices with a micro USB input.

Includes a USB to micro USB charging cable.