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

Ref. 304.63.44.52.01.001·MSRP $42,400

Ref. 329.53.44.51.03.001·MSRP $37,800
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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 Racing Co Axial Master Chronometer Chronograph 44 25mm
Diameter
44.3mm
44.3mm
Lug-to-Lug
50mm
50mm
Thickness
16.9mm
14.9mm
lowest
Water Resistance
100m
highest
50m
Power Reserve
60h
60h
MSRP
$42,400
$37,800
lowest
Movement
Omega 9904
Omega 9900
Case
2 specsMovement
2 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.
Owners widely praise the Omega Speedmaster Racing Co Axial Master Chronometer Chronograph 44 25mm for its unique identity, slick chronograph feel, and legibility, with many highlighting the gorgeous white dial and the refined wearability due to a thinner case and improved bracelet end-links. Reviewers consider it the best-looking modern Speedmaster, combining handsome looks with stellar technology, and owners appreciate modern upgrades like the improved bracelet with female end-links and an adjustable clasp. Some owners find the 44.25mm case size borderline or describe it as "fat" and "Panerai levels of big," though others state it wears well on a 7.25” wrist due to its 49mm lug-to-lug and end-link design, with one owner noting it wears smaller than its dimensions suggest. Overall, owners rate the Omega Speedmaster Racing Co Axial Master Chronometer Chronograph 44 25mm highly for its unique identity and refined wearability at its price point.
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