Features： 1、150dB car electric air horn, loud sound, strong penetration force, has a nice warning effect, to ensure driving safety. 2、High-quality sound film, the sound is more pure, clear and no noise, shocking sound effect, nice user experience. 3、High-quality zinc alloy material, strong and nice durability, high temperature and corrosion resistant, not easy to damage. 4、Compact size, easy to install and use, it is suitable for 12-24V working voltage car, truck, marine boats, motorcycle, etc. 5、Delivery includes a dual trumpet air horn with solenoid valve and installation accessories. Specification： 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 12-24V working voltage car, truck, marine boats, motorcycle, etc. Delivery includes a dual trumpet air horn with solenoid valve and installation accessories. Specifications: Color: Black Material: Zinc Alloy Voltage: 12-24V Decibel: 150dB Item Size: 378 * 153 * 90mm/ 14.9 * 6.0 * 3.5in Item Weight: 786g/ 27.7oz Package Size: 380 * 170 * 95mm/ 15.0 * 6.7 * 3.7in Package Weight: 1013g/ 35.7oz Packing List: 1 * Air Horn 1 * Adapter 1 * Fixing Plate 4 * Screw 4 * Nut 4 * Gasket Package List： 1 * Air Horn 1 * Adapter 1 * Fixing Plate 4 * Screw 4 * Nut 4 * Gasket