Notice:The sound of this product is exactly the same as the sound in our product details page video. if you have a request for sound, please feel free to contact us.115dB Loud Snail Horn Auto Speaker Alarm 12V Tone Vehicle Boat Car Motor Motorcycle Van Truck Siren Car Horn sirene bocina toeterFeatures:- Easy install, durable- Unique fashion design, have different voices- Please check the size carefully before you purchase.- For use with any 12 volt vehicle(car, van,truck, SUV, motorcycle, yacht, boat, off Road vehicle etc)Material: ABSColour: Blue whiteSound Level: 110 + 5 dBVoltage: 12VFrequency: Low 410Hz high 510HzOperation Guide:- The electronic system control the horn to transform the soundFrequency: Low 410Hz high 510Hz- Repeat the above step to transform the sound continually.- One sound will be kept until you press the button.Wiring method:- The red line is connected to the 12V positive pole.- The black wire is connected to the negative pole of 12V voltage.- The blue wire is connected to the horn controllerPackage Including:2x Horns2x Brackets and Screws1x Controller Relay (Black horns haven't relay, just the blue horns have relay)