Feature 1150dB car electric air horn, loud sound, strong penetration force, has a nice warning effect, to ensure driving safety. 2High-quality sound film, the sound is more pure, clear and no noise, shocking sound effect, nice user experience. 3High-quality zinc alloy material, strong and nice durability, high temperature and corrosion resistant, not easy to damage. Features: 150dB car electric air horn, loud sound, strong penetration force, has a nice warning effect, to ensure driving safety. High-quality sound film, the sound is more pure, clear and no noise, shocking sound effect, nice user experience. High-quality zinc alloy material, strong and nice durability, high temperature and corrosion resistant, not easy to damage. Compact size, easy to install and use, it is suitable for 12 V working voltage car, truck, marine boats, motorcycle, etc. Delivery includes a dual trumpet air horn, an air compressor and installation accessories. Horn size: 300x150x75mm. Specifications: Color: Silver Material: Zinc Alloy Voltage: 12 V Decibel: 150dB Item Size: 300 * 150 * 75mm/ 11.8 * 5.9 * 3.0in Package Size: 370 * 170 * 100mm/ 14.6 * 6.7 * 3.9in Package Weight: 1kg/ 2.2lb Packing List: 1 * Air Horn 1 * Compressor 1 * Fixing Plate 5 * Screw 5 * Nut Package List 1 * Air Horn 1 * Compressor 1 * Fixing Plate 5 * Screw 5 * Nut