Review on Super Loud HK Compact Air Horn with Compressor Snail Electric Car Horn - 12V 150db Nautilus Wiring Harness for Trucks, Vehicles, Motorcycles, and Trains by Marcus Rash

. It produces a fairly high-pitched dual sound, more like Italian high-end cars. Also, I doubt it's 150 dB. I haven't tested this on a meter, but I have experience with audio and using dB meters. 150 dB would be insanely loud, it's just pretty loud. Aside from that, it serves my purpose of waking up the idiots trying to knock me out.