Viking Horns 3305/1007 Loud 149 Decibles Chrome 3 Trumpet Train Air Horn Kit with 1.5 Gallon Air Tank/air Compressor &hellip; Train Sound Air Horn Triple Chrome Plated Metal. Loud Sound at 149 Decibels 12 volt, 150 psi Air Compressor Great for SUV's, trucks, RV's, pick-ups, marine use and more...... Includes a FREE horn button