Meets CE and USCG requirements for 1NM visibility for sail or powerboats under 39'. Meets ABYC A-16 requirements. This pair meets NMMA Certification Procedure. Red and green lens. 12V DC - 8 CP lamp included. Pre-drilled with two countersunk holes to accommodate #4 screws. Housing is chrome plated brass with black plastic base. Size: 4-1/4"L x 2-3/8"W.