ThunderBird 18" Inch Low Profile Megnetic Roof Mount Emergency Vehicle Strobe Warning Mini LED Light Bar - All Colors Available - Blue/Blue 3rd Generation TIR LED technology - 10 Modules with Four 1W LEDs per head - In total, 40 GEN3 One watt LEDs Sleek design with clear lens for stealth look - Increased vehicle fuel efficiency. Features more than 15 Selectable flash patterns - Includes 12 feet of cable with cigarette lighter plug which includes an ON/OFF switch and pattern changing switch. Built in self contained internal flasher fully encapsulated & fully weatherproof. 5 Year Hassle-Free Warranty - Lifetime Customer Support!