High quality Model: Europa supertone horn 910. Supreme sound strength. Premium euro-style solution. Suitable for privileged vehicles or other special uses. Low bassy supertone for use with wide range of vehicle types. Suitable for privileged vehicles or other special uses. Micro-porous Teflon Filter for pressure compensation. Weather, impact and corrosion-resistant. Comes with EMC protection. Disc horns produces a metallic "beep" sound with high sound pressure level and far-reaching penetrating power.