Corona Lighting CL-308-BR Underwater Light in Natural Brass w/ Lamp 3-1/4" x 3-1/2" x 4-1/2" Top grade loose ceramic bi-pin socket, spring loaded design. 12V, MR-16 halogen, 50W max. L-BAB-C20 (20w) standard. Fixture is prewired with a 30-ft 16-2 SJT-W water resistant cord. Silicone O ring seals faceplate to housing providing water tight protection. Fully adjustable arms with solid brass thumb screws to provide light aiming. Fixture is mounted on a heavy duty brass bracket for a firm and stable underwater placement.