The Omega Seamaster Diver 300M Co Axial Master Chronometer 43 5mm is a 43.5 mm watch from the Seamaster Diver 300M collection. Its titanium case is 14.27 mm thick and 51.5 mm from lug to lug, with 21 mm lugs. It is water resistant to 300 m. The crystal is sapphire.

The manufacturer’s list price is US$10,500. It comes in 2 versions, with black and white dials.