Features 1. Wide compatibility: The air horn is compatible with all 12V vehicles, including SUVs, motorcycles, trucks, pickup trucks, trains, yachts, boats, off-road vehicles, buses, and trucks. Whether you want to improve vehicle safety or attract attention in special occasions, our speakers can meet your needs. 2. Easy to install: Our train air horn kit was designed with simplicity and convenience in mind. You can easily install it through simple steps without the need for complex programs or additional tools. You only need to connect the horn wire on the car and the two wires of the air horn, and it will work properly. Connect the positive pole to the positive pole and the negative pole to the negative pole. The fast and simple installation process allows you to immediately enjoy powerful sound effects. 3. Durable and reliable: Our air horn is made of high-quality chrome zinc plating and high-quality ABS plastic, which has the characteristics of waterproofing, wear resistance, and corrosion resistance. Whether facing harsh weather conditions or long-term use, our speakers always maintain excellent performance, so you don't have to worry. They can withstand the test of time and environment, providing you with a lasting and reliable experience. 4. Super sound: Double tube air horn with excellent ultrasonic effect. This speaker features truck and train grade compressors and larger coils, which can generate stronger pressure, bring louder and clearer sound, ensure that your alarm sound is heard and provide you with higher safety. Specification Style: 12V black with white motor, 12V silver Voltage: 12V Waterproof grade: IPX5 Current: 15A Shell material: copper+aluminum alloy+ABS Sound pressure level: ＞ 130DB Applicable model: 12V universal car Material: stainless steel metal Color: Silver, Black Product size: 15.5 x 7.5 x 21.1 cm Weight: 890 g Package Include: 1x Air Horn Dual Trumpets