69 different sounds to choose from: nine animals, 10 sirens and 50 musical songs. Use the microphone to convert the horn into a powerful P.A. system. Features a volume control to adjust to any level from soft to super loud. Built with the latest state-of-the-art electronics for years of dependable service. Easy to install in any 12-Volt vehicle, no special tools required. Control unit, plastic weatherproof speaker, a P.A. microphone and instructions in both English and Spanish.. 12-Volt . 105dB.