Let your team spirit shine with Powerdecal. Powered by LED lighting; logo shines brightly through your car window. Device turns on and off automatically via sensor technology. Simply remove 3M adhesive strips and place your POWERDECAL in your auto window. Unit can be removed by sliding up and out of window clip. Light and motion sensors activate LED lighting and preserve the 3 AA batteries (included). Light up the night with your team logo.