Omega Seamaster Diver Co-Axial Master Chronometer 44mm 18ct Gold & Steel Blue Dial Gents Watch O21022445103001. This 44 mm chronograph model is crafted from stainless steel and 18ct yellow gold, and includes a polished blue ceramic bezel with a Ceragold™ diving scale. The pushers are also polished blue ceramic, as well as the dial which features laser-engraved waves and a date window at 6 o’clock. The subdial hands are 18ct yellow gold, along with all other hands and indexes which are filled with white Super-LumiNova. The watch is presented on a blue rubber strap and is driven by the OMEGA Master Chronometer Calibre 9900, which can be seen through the sapphire-crystal on the wave-edged caseback.