Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mmvsOmega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm

Ref. 304.63.44.52.01.001·MSRP $42,400

Ref. 304.93.44.52.03.001·MSRP $15,700
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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 Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm

Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm
Diameter
44.3mm
44.3mm
Lug-to-Lug
50mm
50mm
Thickness
16.9mm
16.9mm
Water Resistance
100m
100m
Power Reserve
60h
60h
MSRP
$42,400
$15,700
lowest
Movement
Omega 9904
Omega 9904
Case
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm is widely praised for its detailed and photorealistic moonphase complication, featuring a boot print Easter egg, and its exceptional finishing, including a ceramic bezel and sun-brushed dial. Owners and reviewers consistently highlight the beauty of the complication and the overall build quality. However, the watch's 44.25mm case size and considerable thickness (around 16.85mm to 17mm) are frequently noted as making it wear large and potentially challenging to fit under dress cuffs, with some suggesting it feels "chunky" or like a "beast." One reviewer found the crown guards sharp when winding and the crown difficult to pull out. On balance, owners and reviewers appreciate the Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm for its stunning moonphase detail and high-end finishing, despite its substantial size.
The Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm is widely praised for its photorealistic moonphase complication, featuring a NASA-sourced image and a 10-year accurate display, along with buttery chronograph buttons and excellent finishing. Reviewers and owners consistently highlight the impressive Master Chronometer certification, antimagnetic properties, and the beauty of the sunburst dial and ceramic bezel with Liquidmetal. However, multiple sources flag its considerable thickness, ranging from 16.85mm to 17mm, which makes it challenging to wear under dress shirt cuffs and leads some to find it too large or bold for smaller wrists. On balance, owners and reviewers rate the Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mm highly for its stunning moonphase complication and top-tier finishing, despite its substantial dimensions.
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