1. Aluminium frame, Wind, dust and humidity-resistant. 2. 20 modules high brightness 3-GEN LED 1W LED lights 1. Aluminium frame, Wind, dust and humidity-resistant.2. 20 modules high brightness 3-GEN LED 1W LED lights,total 40pcs led tubes 3. 15kinds of flash pattern4. Available in various 5. Magnet or screw install Led Police light bar