【40 LEDs Flashing Beacon】Come with 40 High Intensity LEDs Bulbs, This Strobe LED Light is Great for Emergency Workers, Postal Service, Construction Vehicle, Security etc. 【7 Flash Patterns】Easy ON/OFF Power Switch to Change Between 7 Flash Patterns, Simple Operation, Just Press the Switch to Change the Light Modes. 【With Magnetic Base】Magnetic Pods with Protective Rubber Feet, Attach to Any Metal Top; Magnets Strong Enough to Go up to 45mph.(Please Note: When Using Magnetic Strobe Lights, Please Control the Vehicle Speed within 45Mph and NO Sudden Braking While Driving, and Avoid Potholes as Much as Possible) 【Durable and IP65 Waterproof】Housing is Made of Durable ABS and Aluminum Materials and Crystal Clear for Max Brightness, Waterproof IP65, Up to 30,000 Hours Life. 【Easy Installation】Dimension: 12.7cm(5.0''/inch) x 12.7cm(5.0''/inch) x 9.5cm(3.8''/inch); Cable Length up to 5M, Specifically Designed to Work on All Vehicles with a 12V/24V Cigarrette Plug., Manufacturer: Justech