XKTTSUEERCRR Blue Warning Caution Van Truck 8-led Emergency Strobe Light Lamp Bar Unit Dimension: 9.5" ( wide ) x 4" ( deep ) x 2" ( height ). Light Color: Blue Easy to install, with 4 suction cups for quick screen mount, and plug into a 12V cigarette lighter. There are 3 flashing modes: Mode A- One side of 4leds flashe rapidly for 8 times, followed by the other side 4leds flashing rapidly for 8 times. Repeats continuously. Mode B- One side of 4leds flashes once, followed by the other 4leds flashing once. Repeats continuously. Mode C- All 8 leds flash once simultaneously with a brief pause between each flash. Repeats continuously. These high quality and professional grade products are perfect for police officers, first responders, fire fighters, law enforcement, construction workers or emergency workers, and other emergency needs. 1 Year Warranty - 100% Satisfaction Guarantee from XKTTSUEERCRR. Please contact us without hesitation if there is any question.