✔️Advantages: The speakers meet the requirements of ABYC, NMMA, and Coast Guard, and are of an acceptable NMMA type, OEM Part Numbers: 5190512
✔️The contact power supply is 12V, and the volume of the marine horn can reach up to 125dB. The bottom is made of 316 stainless steel. Equipped with installation screws
✔️Solve your installation: 316 stainless steel installation screws, one is M4 * 30 countersunk self tapping screws (2 pieces), and the other is M4 * 30 countersunk machine screws and nuts (2 pieces). It can be installed in a short period of time
✔️The ship's horn is made of high-quality waterproof and breathable film, which effectively waterproof, anti-corrosion, non deformable, and non fading, thus achieving the service life of the product
✔️Our products come with a warranty. If there are any issues with our products, please contact us through Amazon and we will provide you with a satisfactory solution