Bosch 6033FB1214 EC9 Fanfare Horn, (Box of 1) Maximum Attention with solid melodic sound,even over long distances and unobstructed forward popagation of sound Long service life and reliable quality from materials which are resistant to rust and stone impacts Maximim functional reliability with fracture-proof and corrosion-free plastic trumpet, pressure compensaton with microporous Teflon filter and vibration -resistance Powerful tone at 110 decibels Minimal interference to other vehicle electronic components with the use of EMC protection (Electro-Magnetic Compatibility)