Features: 1) Luxury and generous shape, double-layer structure; using large power bulb with higher brightness, suitable for kinds of vehicles 2) Dome: imported high-strength PC material, with excellent lustrous and high fog penetrating ability. 3) Base: aluminum alloy material with high strength 4) Loudspeaker: install inside or outside at your option 5) Rotator: 23W/35W excellent halogen bulb 6) Flash alley light: 23W/25W excellent halogen bulb 7) Strobe light: imported xenon tube and special controlling circuit by 5-flash mode with high efficiency and more than 10,000,000 times for using; square, rectangular and round shape are optional 8) Controlling way: separate control switch or control switch in matched siren 9) LED long-row caution light: with the functions of high brightness, fine stability, low energy consumption, it is the ideal environment-protection product