Signal Mate's 3 NM 225 White LED Masthead Light is certified USCG / ABYC A-16 & 72 COLREGS.The masthead light is used for power, sailboats and commercial vessels up to 20 meters (65') while being propelled by machinery. Small but robust, the 3NM Masthead LED Light includes a wraparound mast mount and latest technology high-brightness (HB) lens. Constant brightness over the full operating range of 10V to 30V DC ensures the light will meet or exceed nautical mile requirements if the battery voltage drops. Active & passive RF filtering to prevent radio interference. Reverse polarity-protected, surge-protected, waterproof and vibration-proof.Specifications:Visibility: 3 NMApplication: Sailboats up to 65'Voltage Range: 10V to 30V DCLED Life: 50,000 hoursDimensions: 2 1/8"W x 3 1/4"HCertifications: USCG 3NM, COLREGS '72, ABYC A-16Warranty: 5 years