USCG certified for use on sail or power driven vessels under 20 meters (65.6 ft.) in length. 2-mile visibility. Replacement stowaway plug-in type w/gold plated contacts. 12V bulb included. Fits Perko 2-pin bases: 1059, 1060, 1046, 1047, and 1045. Bases not included. Pole replacement for 1430, 1630, 1631, 1640 and 1660 series lights. Height 24"