1. Single horn, no air system required
2. Easy to install, shiny chrome finish and tuned train horn sound
3. Suitable for cars, trucks, boats, motorcycles, 12V vehicles
4. Note: The color of the connector screws is random
5. Material: plastic, metal
6. Packing list: speaker x1, air compressor x1, air hose x1, gasket x2, screw nut x4
7. Weight: about 1050 grams
8. Size: about 45x10x9.5cm