The Voyager Ocean Liner Horn is a powerful and practical product that produces three ultra-powerful ocean liner horn sounds. With a speaker size of 7" x 5-1/2" x 6-1/2", it is easy to install in any 12-volt vehicle and fits most makes and models. This horn is sold individually and offers a simple solution for adding a distinctive and attention-grabbing sound to your vehicle. Its functionality and ease of installation make it a convenient choice for those looking to enhance their vehicle's auditory presence.