1. Each lamp contains 10 LED Bars, there are 3 LEDs in each bar. The LEDs were well protected. 2. Magnetic base, directly attached to roof top. 3. This strobe light LED is specifically designed to work on all vehicles. 4. Durable and waterproof. 5. Compatibility: works on all 12v vehicles. 6. Can be used on commercial trucks, security vehicles, construction vehicles, emergency vehicles, etc.
