The Mycharge Stylepower – water color is a rechargeable 2200 mAh battery with smart-sense which ensures complete device compatibility. It also has max-power which is maximum power transfer from powerbank (charger) to device. It is a high-density battery: the smallest and lightest powerbank and is safe-cell which means it provides the highest level of battery safety. Up to 1x extra battery. USB port delivers 1.0a output. 1.0a input. Integrated USB cable for easy recharging.