This power bank utilizes a 2200mAh Lithium Ion Grade A non-recyclable battery to provide an output of 5 Volts/1.0 Amp through its USB out put port while it is recharged with its micro USB port. This power bank is useful in charging phones and most multimedia devices and is available in several color designs.This is a top seller and one of the lowest cost power banks available.US STOCK available color for black ,silver, blue ,red .It will look great when imprinted with your company name or logo imprinted onto it using full color printing or silkscreen printing .Add some style and color to you next marketing campaign with the help of this classic powerbank!