An Omega Seamaster Diver 300M Co-Axial Master Chronometer mens watch, 43.5 mm model. The case is crafted from black ceramic and grade 5 titanium and includes a black ceramic bezel with a white enamel diving scale. The dial is deep navy blue ceramic and features laser-engraving to create raised waves. The skeleton hands and raised indexes in PVD titanium are filled with white Super-LumiNova. Anti‑magnetic, helium escape valve. Complete with its original rubber strap with a polished black ceramic buckle. Marked on the backside: Omega Master Co-Axial 8806. Chronometer Wrist Watch, Gifts And Accessories For Men.