Very thin, lightweight powerbank in a handy credit card format. Incl. of built-in lithium polymer battery (2400mAH / 3.7V). Input: 5V-500mA. Output: 5V-1000mA. The PowerCharger can be charged by USB with USB cable. Suitable for charging the most common mobile devices (including smart phones - also compatible with iPhone 5/6/7 - and music players). Incl. manual. The PowerCharger 2400 meets the European directives and is available with a USB/micro-USB charging cable, A-quality lithium battery and instructions in more languages. When you divide the power of the PowerCharger (mAh) by the capacity of the battery in your mobile device (mAh), you know approximately how many percent or how often you can charge your mobile device. Each piece in a box.