VINTAGE FEDERAL SIGN & SIGNAL JUNIOR BEACON RAY, Model 15 12-volt. Great used condition. Chrome is a little pitted with age, but still shiny and uncracked. Red dome is free of scratches and defects. Cord is about 10 feet long, and has a 12 volt (car cigarette lighter) end. Has magnets on the bottom that were used to stick on the top of a car to indicate police/fire. Works great! See it on youtube: