This accessory is provided with 2 USB inputs and additional lighter input, so even if you put it inside one in your car, you still have one free to put other accessories in. Built-in FM transmitter with Bluetooth 4.2 allows playing music from the phone via a car radio. The charger has an electric display informing about the voltage and radio. The built-in microphone makes it possible to use the accessory as a loud speaking kit and the light blue LED makes it easier to use it at nighttime.