To use, place a Qi enabled device on the charging pad. It features an upgraded FOD (Foreign Object Dectector) through a blinking red & blue light, as well as a power-efficient idle mode that prevents overcharging your battery and wasting energy. The LED indicator light is red when idle and blue when the phone is connected and charging. If the device is not able to be charged wirelessly, you can connect directly to charge using Micro USB input. (Includes micro USB connecting cable)