Feature: 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 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 Material: Aluminum Alloy Color: As Picture Shown Application: For Truck, Ambulance, Road Traffic Product Size: Approx.148(Dia)×165(W)mm/5.8(Dia)×6.5(W)in Weight: Approx.2350g/5.2lb Voltage: DC 12V Current: 15.0A Sound Level: 130dB Feature: PA Speaker                            Package List: 1 x Siren Speaker