LED Navigation Master Lighot WhiteWhite Masthead Light, Black polymer body (Bulb not included)Certified For Use on Vessels 20 Meters (65.6 ft.) to 50 Meters (164.0 ft.) in Length Pre-Wired Double Contact Bayonet Socket and 3 Feet of 16/3-SO Cable Watertight Access Cap for Rebulbing and Cleaning Voltage: 12V or 24V 12 Volt Wattage & Amperage: 30 watts / 2.5 amps 24 Volt Wattage & Amperage: 30 watts / 1.25 amps Height Overall: 7-1/2" Height Lens: 4-1/4" Screw Size: 1/4" Visibility Arc: 225° Visibility: 5 MilesPlease select suitable bulbs from below: