The Pacific Diver series features a 44 mm stainless-steel case with a CARBONOX¢ uni-directional bezel resulting in an eye-catching fusion of materials. Model 3121.BO.RF is a black on black (blacked out dial, black bezel and black case) eye-catcher coming with a red cut-to-fit strap and featuring water resistance to 200 meters, screw in crown and case back, sapphire crystal and, of course, the Luminox Light Technology, which guarantees constant night visibility for up to 25 years.