【Super Bright】AMEXMART 38"emergency strobe light built-in 78 high-intensity LEDs with TIR optic lens, provides 360-degree of superior visibility during the day or at night, raining or fog days, help driver make their jobs safer and more efficient. 【Easy Installation】Comes with 4 Heavy Duty strong magnets with thick rubber suction cups(Test go up to 80mph but not fall off) ,more stable and easy for mount without hurting the roof of your vehicles; 16.4 ft heavy duty cable and 12-24V plug and play, long enough to install the light anywhere of the vehicle. 【Flash Patterns】This amber light bar has double switch buttons setting, 14 different flash 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. 【Premium Quality & Waterproof】Sturdy and durable aluminum waterproof housing offer superior heat dissipation for extending the life of the emergency light bar. Lifespan is up to 50,000 hours. IP67 waterproof withstand rain, fog, sandstorm, snow and other harsh weather conditions. 【Wide Application】Our emergency strobe light bar for trucks can simply mount on rooftop of your vehicle. Great for emergency vehicles, law enforcement cars, mail postal service, construction equipment, public service,snowplow, trailer, plow tractors and tow trucks, pickups, roadside assistance vehicles, security guard patrol vehicles, escort vehicles and volunteer personal vehicles. 【Buy with confidence】 Amexmart provides 30 days Money Back/Replacement Guarantee,24-Month Worry-free Warranty, Lifetime Customer Support, Timely RESPONSE within 4 hours.