Product information and features: This 12 LED Lightbar is great for emergency workers, Construction vehicle, Security, Firefighter strobe light, Tow Truck, etc. Power cable with cigarette lighter adapter (Working at DC12V) 100% Brand New and High Power Strobe Lights High Quality, Professional Grade products Latest ultra bright LED chipset technology Voltage: 12V There are 3 flashing modes: A. Left 4 LED flash quickly for 4 times. B. Right 4 LED flash quickly for 4 times. C. All LED flash at the same time. Measurement: 9.5″X3.8″X1.9″