Power Bank 2200mAh made of alumiunum shell . Li-ion battery. Perfect for anyone on the go. The attached keychain ring allows you have power wherever you bring your keys. 2200mAh- Input:DC 5V/5A; Output: DC 5V/1A. Available with vibrant full color imprint. CE & FCC certified.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!