Omega Seamaster Diver 300m Watch, 43mm Black Dial, 210.62.44.20.01.001This 43. 50 mm model, cased in black ceramic [ZrO2] and Sedna gold, has a black ceramic dial with laser ablated waves in positive relief. The polished Sedna gold indexes and facetted hands, filled with white Super LumiNova, contrast beautifully with the black dial. Completing the look is an integrated black rubber strap with black ceramic buckle.