Constructed of durable, engineered alloyed plastic resin. For use on boats up to 65.6 feet, provides a complete 360°, 3-mile visibility. Includes two 10-watt festoon lamps. Sleek clear lens design. Easy adjustment with cam-lock adjustment handle. Design meets new USCG certification and ABYC A-16-97 light output standards. Includes both vertical and horizontal mount base styles.