Omega Speedmaster Moonwatch Professional Co Axial Master Chronometer Chronograph 42mmvsOmega Speedmaster 38 Co Axial Chronometer Chronograph 38mm

Ref. 310.63.42.50.01.001·MSRP $36,100

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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Speedmaster Moonwatch Professional Co Axial Master Chronometer Chronograph 42mm

Speedmaster 38 Co Axial Chronometer Chronograph 38mm
Diameter
42mm
38mm
Lug-to-Lug
47.5mm
44.9mm
lowest
Thickness
13.2mm
lowest
14.7mm
Water Resistance
50m
100m
highest
Power Reserve
50h
52h
highest
MSRP
$36,100
$23,300
lowest
Movement
Omega 3861
Omega 3330
Case
5 specsCrystal & Dial
1 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Omega Speedmaster Moonwatch Professional Co Axial Master Chronometer Chronograph 42mm for its historical significance, iconic design, and wearability, with some finding it provides more personal satisfaction than more expensive watches. Reviewers note the updated 3861 movement offers improved accuracy and magnetic resistance, and the bracelet is a significant enhancement. The redesigned case and dial details are seen as aesthetic advances, and the Hesalite crystal, while scratch-prone, is polishable. Some owners find the current prices too high, suggesting it is overrated and overpriced at $7,000, citing a lack of applied markers and mediocre lume, while others disagree, highlighting its value at lower price points and its status as the best movement in the line.
Owners widely praise the Omega Speedmaster 38 Co Axial Chronometer Chronograph 38mm for its suitability for smaller wrists and its attractive sunburst dial, with some noting its timeless design and technical improvements. However, opinions are divided on its thickness, with some finding it chunky and others considering its dimensions perfect. The integrated date corrector, requiring a pin, is frequently cited as a hassle by users. On balance, owners and reviewers appreciate the Omega Speedmaster 38 Co Axial Chronometer Chronograph 38mm for its refined design and wearability on smaller wrists, despite differing views on its case thickness.
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