Wotefusi Car Truck Boat New 12V 100W 300dB Black Horn Siren 5 Sound Tones Amplifier Alarm Speaker Kit Adjustable Volume Including Microphone Voltage: 12V Horn Size: 150 X 80 X 180mm Power: 100W Tone: 300dB Color: Black Adjustable volume,including microphone . You can install the siren in any car, truck, boat, etc... Car Horn Kit