The Animal House Electronic Horn And PA System is a practical and versatile product that can be installed in any 12 Volt vehicle. With a speaker size of 4" x 4" x 4-1/2" and a controller size of 6" x 4-1/2" x 1-1/2", this system offers 69 different sounds to choose from, including 9 animal sounds, 10 sirens, and 50 musical songs. The adjustable volume and powerful PA system make it perfect for various uses. Each unit comes with a control unit, speaker, and PA microphone, and it fits most makes and models. Experience the benefits of this reliable and efficient electronic horn and PA system.