Be the center of attention with this stylish aluminum USA decorated power bank! It comes packed with a high-power efficient polymer battery, available in 4000 mAh capacity. At the push of a button, the Proton charges your devices with the included USB cables at an output and input of 5V at 1A and has LED power indicator. These power banks battery chargers are available in various anodized colors. Add your logo using any of our imprint methods and engage with your customers in a whole new way!