Description 1.UPGRADED -- Roof top strobe light bar use 48 high-intensity LED chips with magnifying lens to maximize light output and ensure more effective warning to other vehicles. At the same time upgrade the material, waterproof performance, cable length, magnet. Make the light not only bright, but also more durable. 2.EASY TO INSTALL -- 2 x 7 strong magnets with larger thick rubber suction cups, more stable than other 2 x 5 magnets. Very quick to mount without hurting the roof of your vehicles, as well as adding strength on attachment. 16.4 ft heavy duty cable and 12-24V plug and play, long enough to install the light anywhere of the vehicle. 3.FLASH PATTERN -- Double switch buttons setting, 16 Patterns to choose from. You can switch ON/OFF or select the flashing mode conveniently at the cigarette lighter plug buttons. Last used pattern recall/memory function. 4.HIGH PERFORMANCE -- Integrated heatsink, and anti-condensation drain port, good improved the problem of water vapor condensation inside the light. Completely Waterproofed, Strong fog penetrability and dust-proof and corrosion resistant.Lifespan up to 50,000 Hours.