Features: It's the latest development by our company. LED light source with polycarbonate lens, which be strengthened by plating film and does not depigment under sun shine. it is with impact ability. Waterproof, dust proof design. Strobe tube from Germany is high efficiency with energy saving, anti-background light and penetrating mist ability. Computer chip controls flash pattern and speaker placed out of lightbar can be suitable for all kinds of emergency vehicles.