Signal Mate's 2NM 360 Yellow LED Dredging Light is certified USCG / ABYC A-16 & 72 COLREGS.This light is used to mark dredging or underwater operations at night and in periods of restricted visibility. The light flashes at 60 flashes per minute (fpm). The light features secondary optics to increase the brightness while maintaining low current draw. Small but robust, this light includes a bracket as well as latest technology high-brightness (HB) LEDs. 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. Five-year warranty.Specifications:Visibility: 2 NMVoltage range: 10 to 30 VDCCurrent draw: 0.160A @ 12VDimensions: 3 1/4"H x 1 1/2" Dia.Certifications: USCG 2NM, ABYC-A16, COLREGS '72Warranty: 5 yearsProduct Manual