Certified for use on power driven vessels under 20 meters (65.6 ft). 2nm visibility. Stainless steel top with black polymer baseDesigned to be mounted only on a vertical surfaceMeets Global Specifications for: ABYC C-5, NMMA Type Accepted, EN/ISO 19009:2015, ABYC A-16, the '72 COLREGS and the U.S. Inland RulesScrew Size: #62.5 Watts, 0.21 AmpsMade in the USA