If you’ve never heard the Stebel Nautilus horn in person, it’s difficult to describe. “Loud” is insufficient. Sure it is loud – very loud at 148 db. The two-note tone created by the Nautilus could better be described as “piercing” or even “pseudo-deaffoning.” Both are great qualities in a scooter horn. If you’re looking for a great way to get that absent-minded cager’s attention, look no further. You’re likely to startle the cell phone right out of their hand.