Extremely powerful 300dB train horn for trucks, trains, boats, cars, electric vehicles, waterproof 12V, powerful dual horn for cars and motorcycles

ABS polymer material, strong corrosion resistance, waterproof product, will not rust or short circuit when it rains, Extends lifespan, easier to use.The internal backflow design, up to 300dB, gives you a loud voice to warn others and provides a degree of safety while driving. Our snail horn can help reduce unnecessary injuries.There's no bulky air compressor, just a small device that produces an amazing sound. It's so compact, almost half of our customers buy and install two horns to double the volume.The unique mounting bracket design makes installation more secure, and the bracket is universal, allowing you to install it in any position. It only requires a 12V power supply and reduces power consumption.The horn is suitable for almost any vehicle. While it's the perfect upgrade for trucks, our horn is also compatible with SUVs, cars, boats, and motorcycles.