300DB Train Horn for Your Truck: The 300DB Train Horn offers the loudest sound on the market, while also being the most compact Train Horn offered. Fast Installation: The Train Horn is a high-quality, high-end train horn kit designed to integrate into as many trucks as possible. On top of that, the installation process takes less than an hour. Innovative Design: The Horn features an extremely powerful directly injected mini-compressor paired with a patented snail design to really charge and amp up the sound! All integrated into one small but powerful device. Extraordinary Equipment: There is no bulky air compressor, only a small device that produces sound! It's so compact. Broad Compatibility: Train Horn is Suitable For Almost Any Vehicle! While It's the perfect upgrade for trucks, our horn is also compatible with SUV, passenger cars, boats, and motorcycles. Exquisite breathing design with snail performance, heat and strong. Made of fine quality metal inside and ABS coated for a long lasting finish, strong resistance, and waterproof. Metal terminal of horn with fine contact, no oxidation, stable characteristics and high reliability. With universal mounting brackets and screws, installation is simple. Universal fit for most 12V motorcycles, car, truck and boat. Voltage: 12V Frequency: 410Hz(Low Pitch) / 510Hz(High Pitch) Weight: 260g About the sound of the speaker: Because of its structure, the snail horn vibrate through the resonance box, and the same power increase its sound, mit it farther, and save electricity. Its louder and fuller sound definitely make your car look impressive. The sound of the horn is: "DI, DI~" The sound of the snail horn is: ", " Fuller sound and longer life! Colour: Black+ Red Material: Metal The sound level is actually only 105-115db Package Conten: 1 * Electric Snail Horn Only the above