Signal Mate's 3NM 360 White Photodiode LED Anchor Light is certified USCG / ABYC A-16 & 72 COLREGS.This light is used for power, sailboats and commercial vessels up to and over 164' (50m). Small but robust, the 3NM 360 Anchor 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 NMVoltage range: 10 to 30 VDCCurrent draw: 0.160A @ 12VDimensions: 3 1/4"H x 1 1/2" Dia.Environment: Waterproof, submersibleWeight: 9.0 oz.Certifications: USCG 3NM, ABYC-A16, COLREGS '72Warranty: 5 years