Stebel 14550011 - Nautilus Brio LDV Unique 1pc Compact Mini Air Horn design in a red ABS finish Altnerating "La Dolce Vita" type twin tone sound (530Hz and 680Hz) plus harmonized sound at 139dB Full size for larger installations (7" x 3 1/2" x 7" tall) with a water Resistant Compressor: 18 amps at 12volts Will work with any 12 volt system (car, truck, motorcycle, golf cart, RV, bus, Rhino, Gator, ATV, boat, Hi-Lo, )