Wolo's SEA ALERT XTREME 24 VOLT (low & high tone) is two independent air horns, that are solid brass and have a bright chrome finish that will dress up and look great on any boat, big or small. Trumpets are designed for mounting either next to each other or independently. Each horn powered by its own compact heavy duty compressor. The sound chamber of each horn has a Lexan® non-corrosive diaphragm, making it ideal for boats in salt or fresh water environments. To eliminate vibration, a stainless steel adjustable front pedestal bracket is included. The horns will easily mount on the bow or cabin top with stainless steel mounting hardware provided. Comes with a 24 Volt Compressor. English / Spanish packaging. Marine Grade (Suitable for Trucks & Boats). Learn More