The XM Snap makes it easy to add Satellite Radio to your vehicle. Just plug it into the vehicle cigarette lighter or power adapter socket, connect the antenna and listen to SIRIUS XM through the existing vehicle radio with simple, do-it-yourself installation. It's fully adjustable for convenient placement in the vehicle, so you can easily access the radio controls and clearly view the high-contrast display. The simple controls make it a snap to use – the large arrow keys navigate through categories, the rotary knob changes channels, and the preset keys store favorite channels for one touch access. It includes everything you need to listen in your vehicle.