Check the listing for details. 16.5" RoofTop Beacon Emergency Strobe Light 56LED Magnetic Warning Caution Light. Color: Amber, Condition: New. Listed at 49.99 USD. ❆ WIDE APPLICATION--This rooftop strobe light bar is a great choice for firefighters, snow plowing, safety warning, emergency vehicles, utility workers, postal service, construction vehicles, etc. (Note: the magnetic base does not apply to aluminum body vehicles). ❆ UPGRADE 16.5 INCH SIZE--The rooftop strobe light bar has a total of 56 high-intensity leds, And TIR optic lenses offers a super bright light output. 200% brighter than a standard LED strobe light, bright enough to be seen more than 2000ft in distance. It is even visible during daytime conditions, Brighter and more effective than standard LED strobe lights. ❆ 20 FLASHING PATTERNS--Double switch buttons setting, 20 Patterns to choose from, including 3 traffic modes.