OREI Super Ultra Slim Elegant Brushed Aluminum External Battery for Cell Phones - Unicharge TechnologyOREI Ultra Slim External Battery is a portable power bank with an integrated 2000mAh Lithium Polymer rechargeable battery with 1. 0 Amp of output ready to charge up your smartphones and tablets. Its roughly the size of an credit card, the UNICHARGE EX has an elegant yet modern brushed aluminum surface and with a thickness of only 0. 18", you can bring it just about everywhere you go. Keeping your important mobile devices charged while enjoying the