OmegaSeamaster Diver 300M Chronometer

From the retailer listing

The ultimate in sport-luxury sophistication Since 1993, the Seamaster Professional Diver 300M has enjoyed a legendary following. Today’s modern collection has embraced that famous ocean heritage and updated it with Omega's best innovation and design. This 42 mm model is crafted from 18K Sedna™ gold and includes a polished blue ceramic bezel with a Ceragold™ diving scale. The dial is also polished blue ceramic and features laser-engraved waves and a date window at 6 o’clock. The skeleton hands and raised indexes are 18K Sedna™ gold and are filled with white Super-LumiNova, while the helium escape valve features a conical design. The watch is presented on a blue rubber strap and is driven by the OMEGA Master Chronometer Calibre 8801, which can be seen through the sapphire-crystal on the wave-edged caseback.