It's the perfect travel companion as it is compact enough to store in most pockets yet powerful enough for transferring power to your digital device. It's about the size of a credit card and roughly the thickness of 4 credit cards. It features a built-in micro USB cable and an on/off LED indicator.It is compatible with both Android and iPhone devices.

Specifications:

Battery: UL certified battery

Unit weight: 76 g/2.7oz

Power output: 5V/1A

Power input: 5V/1A

Capacity: 2500 mAh;