SPECIFICATIONS:Volts: 12VLight: WhiteVessels-Visibility: 2NMWattage: 10WHeight: 4-1/2 inches (114mm)Dimensions - Height: 4-1/2 inches (114mm) Base: 2-3/4 inches (70mm) x 2-3/4 inches (70mm)Distance between holes is 2 inches (51mm).This navigation light complies with the USCG rule for vessels less than 12 meters (40 ft)Material: Strong ABS plastic.Non-magnetic and saltwater resistant