All black polymer navigation side light with 12V bulb included. Certified for use on sail or power driven vessels under 20 meters (65.6 ft) in length.Technical Information: Bulb: 12 Volt Screw Size: #10 Projection Overall: 2-1/2" Height Overall: 3-5/8" Width: 4-1/8" Visibility Arc: 112-1/2 Visibility Miles: 2