Wolo's SEA ALERT LOW TONE 12 VOLT marine air horns are solid brass with a bright chrome plated finish, which will look great on any boats. The sound chamber 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. Sea Alert easily mounts on the bow or cabin top with stainless steel mounting hardware provided. The heavy-duty chrome plated compressor included is compact in size for easy installation and is maintenance free. English / Spanish packaging. Marine Grade (Suitable for Trucks & Boats). Learn More