SUPER BRIGHT, great for emergency workers, postal vehicles, construction, and security. 12 Watt SMD LED with clear waterproof housing ON/Off button and button for changing 8 different flash patterns It has a 7 1/2 foot wire with cigarette plug. Two magnets on the bottom for mounting Dimensions: 11" long x 5 1/2" wide x 3" tall. Weight: 3 lbs.