300DB Train Horn for Your Truck: The 300DB Train Horn delivers a powerful sound while featuring a compact design. Fast Installation: This high-quality train horn kit is designed for broad vehicle compatibility. Installation can be completed in under an hour. Innovative Design: The horn includes a high-performance mini-compressor combined with a unique spiral design to enhance sound output. All components are integrated into a small, efficient unit. Extraordinary Equipment: No large air compressor is required—just a compact device that produces strong, clear sound. Broad Compatibility: Suitable for a wide range of vehicles. Ideal for trucks, and also compatible with SUVs, cars, boats, and motorcycles. Elegant spiral design with enhanced acoustic performance, heat resistance, and durability. Constructed with high-quality metal internals and an ABS surface coating for long-lasting finish, corrosion resistance, durability, and waterproof performance. Metal terminals ensure excellent electrical contact, prevent oxidation, and provide stable performance and high reliability. Includes universal mounting brackets and screws for easy installation. Universal fit for most 12V motorcycles, cars, trucks, and boats. Voltage: 12V Frequency: 410Hz (Low Pitch) / 510Hz (High Pitch) Weight: 260g Sound Performance: Due to its structural design, the spiral horn uses resonance to amplify sound, allowing for greater sound projection and improved efficiency. Produces a loud, full tone that enhances your vehicle's presence. Horn Sound: "DI, DI~" Spiral Horn Sound: "Doo, Doo~" Features a rich sound output and extended service life. Color: Black + Red Material: Metal Actual sound level: 105-115 dB Package Contents: 1 x Electric Spiral Horn Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.