Signal Mate's 2NM 360 Green LED Navigation Light is certified USCG / ABYC A-16 & 72 COLREGS.This light is used for power, sailboats and commercial vessels up to 164' (50m). Small but robust, the 2NM 360 Navigation Light includes a bracket 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 164'Voltage Range: 10V to 30V DCLED Life: 50,000 hoursDimensions: 3 1/4"W x 1 1/2"DCertifications: USCG 2NM, COLREGS '72, ABYC A-16Warranty: 5 years