[120 + / - 5DB-Car ] The train horn can produce up to 120 + / - 5DB of sound, high-quality speakers can ensure the safety of your driving and travel. [Material] We have been producing speakers for 7 years. We only use the highest quality materials for the . The is made of metal. In all weather, it can be used normally, resistant to and high temperature. [Safe] The relay can the role of automatic adjustment, safety protection, conversion circuit, etc. [EASY INSTALLATION] Super easy to install! First, you fix the engine to a certain position on the car with a nut, then fix the air tube horizontally outside or in the engine compartment, and finally connect the air hose, relay and 12V power source. Color: black Material: metal Package Contents: 1 * Air Intake Kit Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is