Dimensions: 2-1/2″ W x 3/4″ H x 5/16″ D Mounted in a heavy gauge, polished stainless steel joiner cover. Ideal for up to 30′ boats and designed to fit the popular 3/4″ insert profiles. Certified for ABYC/USCG required for 2 NM for both sail and powerboat designation. Provides a 112.5� unobstructed view with less glare. Water-resistant, IP68 rating. Mounts with a 1″ #8 stainless steel fastener (not included). Low-voltage 12-14 VDC. Sold in pairs with one 3-watt port (Red) light and one 2-watt starboard (Green) light.