
The Omega Speedmaster Moonwatch Professional Co Axial Master Chronometer Chronograph 42mm is widely praised for its updated Co-Axial Master Chronometer caliber 3861 movement, offering excellent accuracy of 0/+5 seconds per day and resistance to 15,000 gauss. Owners appreciate its improved bracelet, step dial, Dot Over Ninety bezel, and overall design balance, with many finding it provides significant personal satisfaction. However, some owners find the manual-winding experience slightly fiddly, and a few consider the watch overpriced for its features, citing the Hesalite crystal's tendency to scratch easily and the 50m water resistance as drawbacks. On balance, owners and reviewers rate the Omega Speedmaster Moonwatch Professional Co Axial Master Chronometer Chronograph 42mm highly for its iconic design and significant mechanical update at the price point.
The Omega Speedmaster Moonwatch Professional Co Axial Master Chronometer Chronograph 42mm (ref. 310.23.42.50.02.001) is a manual chronograph watch, with a 42mm steel & moonshine gold case, 13.18mm thick, powered by the Omega 3861 movement and a 50-hour power reserve. Water resistance is rated to 50m, under a sapphire crystal, with chronograph complications. Manufacturer MSRP is $13,100.