2x 12V 300DB Super Train Horn Waterproof for Car Truck SUV Boat Motorcycles Red for Car and Motorcycle Accessories -- Product Features: Our 300DB train horn offers the loudest sound on the market, yet is the most compact train horn offered. The Train Horn is a high-quality, high-end train horn kit designed to integrate with as many trucks as possible. Plus, the installation process takes less than an hour. Everything integrated in one small but powerful device. There is no bulky air compressor, just a small device that produces an amazing sound. It is so compact, almost all customers buy and install 2 horns to double the volume. The train horn is suitable for almost any vehicle! While it is a perfect upgrade for trucks, our horn is also compatible with SUVs, cars, boats and motorcycles. As mentioned before, the installation process takes less than an hour and is easy to do. Equipped with a dust cover, which can effectively prevent dust and water from entering, extend the service life of the horn. Product Specifications: Type: Horn Material: ABS + Metal Volume factor: 300DB Technical support: vehicle power 12V Package includes: 2pcs 12V Super horn for trucks 300DB