FEATURES: The 27" emergency warning LED strobe light bar is constructed with a sleek, low profile stealth design in mind. Fully weatherproof with completely sealed off and encapsulated lightheads. Professional design for police officers, firefighters, EMTs, construction vehicles and more HIGH VISIBILITY LED CHIP: 6th Generation TIR LED Technology with Four 3W High Power LEDs Per lighthead and a total of 14 Lightheads for a total of 56 High Power LEDs. Provides 360° Coverage, Visible During the Day or Night conditions. Made with a Flood Lens for a Maximum Brightness Output that can be Seen Up to 1/2 Mile Away 15 STROBE PATTERNS: You can choose from 15 different strobe patterns. Patterns include Rotating, Flashing, Alternating Left to Right, Right to Left, Traffic Advisor, etc. Also has a Memory function to recall the last pattern used HIGH QUALITY: Professional-grade design with a die-cast aluminum shell. Highly durable and made to endure harsh conditions. This rooftop LED strobe is built to last with its rugged sleek frame & sealed weatherproof build EASY INSTALLATION: Installs on any metal roof with 4 heavy duty magnetic mounts and protective rubber feet. Includes a 13.13ft hassle-free straight cable with a 12v cigarette lighter plug. With an easy magnetic roof mount, you'll be setup and ready to go in no time