UPGRADED - This traffic advisor strobe light bar has a total of 144 high-intensity Led chips, using floodlight PC lens, which can maximize the light output. Visible in day and night and lifespan over 50,000 hours. Innovative rotatable mounting bracket, which can be installed on any horizontal, inclined or vertical surface. QUICK RESPONSE- This rear emergency light bar is very suitable for the front or rear internal windshield. Different color combinations can attract the attention of others and are easy to see in rain, fog, dust, and snow to warn other vehicles. Guarantee the safety of drivers and pedestrians in bad weather. 26 STROBE FLASH PATTERNS - 12V power, plug and play cigarette plug, convenient dual-switch design. One to turn on/off power supply, one to switch between 26 different flash modes . Including the last mode memory recall. These modes provide warnings for potential imminent dangers. EASY INSTALLATION&WIDE USE- Includes 4 strong and stability suction cups bracket, firmly mounts on a smooth windshield or back window surface. Suitable for front/rear windshield mounting. Widely used for Hazards Warning, EMS, Law Enforcement, First Responder, emergency vehicles, construction vehicles, police, snowplow, postal and city service workers, etc. DIMENSIONS - The red and white emergency lights has two pieces, each piece is 16.8 inches long.The length of the wire from light to light is 3.9FT（sold separately 9.8FT/3m extension cable wire Asin: B09VGVS6ZY ) . The length of the wire from the light to the cigarette lighter is 16.4FT.