Now you can toot your own horn with the dukee 3 trumpet high output train horn! offering that patented train sound at 12/24 volts with an output of 120 e5db, the dukee sounds like the real thing! comes complete with 3 heavy duty chrome plated trumpets and a 12v compressor, along with mounting brackets and detailed instructions that make installation easy. the dukeese proven design is backed by a limited lifetime warranty.