Features: 1.Wide Application: Able to be compatible with all 300W siren/amplifier systems, a perfect replacement for broken or damaged horn with good performance. 2.Aluminum Material: Made of high quality aluminum material with high strength and wear resistance, long service life, able to withstand most of bad conditions. 3.Simple Installation: Easy to install with integrated universal mounting ring bracket design, only simple steps needed, will not take much effort or time. 4.Powerful Tool: Loud warning sound with a level of 130dB, can be heard from a distance. Can be used for ambulances, cars, fire engines, etc., can let passersby out of the way in time. 5.Package Content: The package contains only a car warning speaker, other accessories and tools need to be prepared by yourself, please make sure you are clear about this.Specification:Item Type: Electric Horn_x005f_x000D_Material: Aluminum Alloy_x005f_x000D_Color: As Picture Shown_x005f_x000D_Application: For Truck, Ambulance, Road Traffic_x005f_x000D_Product Size: Approx.148(Dia)165(W)mm/5.8(Dia)6.5(W)in_x005f_x000D_Weight: Approx.2350g/5.2lb_x005f_x000D_Voltage: DC 12V_x005f_x000D_Current: 15.0A_x005f_x000D_Sound Level: 130dB_x005f_x000D_Feature: PA SpeakerPackageList:1 x Siren Speaker