?[Dual tone loudly]The internal reflux design, up to 300DB loudness, gives you a loud voice to warn others, and provides a certain degree of safety for driving. Our 12V snail horn can help you reduce unnecessary injuries ?[Waterproof Material]ABS polymer material, strong corrosion resistance,waterproof product,It won't get rusty and circuit short when it is raining. ?[lightweight]: There is no bulky air compressor, only a small device that produces incredible sound! Its so compact, almost HALF of our customers buy and install 2 horns for double the loudness! ?[Easy to install]Our snail horn is equipped with screws and brackets; it makes it easier for you to install it; it only requires 12V power supply and lower power consumption. ?[Broad Compatibility]: Train Horn is Suitable For Almost Any Vehicle! While It's the perfect upgrade for trucks, our horn is also compatible with SUVs, passenger cars, boats and motorcycles.