2. Color: Blue/Yellow/Red for choose 3. Suitable for alarm at a dangerous post in industrial and mineral enterprises ,at the watch post, on the top of a vehicle etc. DC 12 24V rotary type . 4. Long life warranty, super bright 5. Bottom with one big round magnet ,cover by base, No scrape car's painting 6. Usage:Police,fire engine,ambulance,street sprinkler,truck 7. Perfect for use in Fog,Rainy,Snowy Mud Wind Season Ideal for Emergency Situations,Durable and Bright Light 8. Circular Warning light, Strobe light,Caution Light