This 4-LED Strobe Lights is great for emergency workers, postal service, construction vehicle, security etc. 19 different strobe patterns available (support power off memory), brighter and more effective than standard LED strobe lights. Greatly improve the safety for night driving, highway rest stop and auto repair. Brightest strobe lights to warn the coming to slow down or catch their attention to get help. Features - Light Color: Red and Blue - Material: Aluminum - Size: About 8.6 x 2.8 x 1.2cm - Voltage: 12-24V - Power: 12W - Waterproof: IPX4 - 19 different strobe patterns available, support power off memory. - Powered by 4 LEDs, greatly improve the safety for night driving, highway rest stop and auto repair. - Aluminum material shell, heat dissipation. - Low consumption, energy-saving, long lifespan. - Universal fit most DC 12-24V cars, motorcycles and trucks. - Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand