Omega Speedmaster Moonphase Co Axial Master Chronometer Moonphase Chronograph 44 25mmvsTudor Black Bay Chrono S&G

Ref. 304.63.44.52.01.001·MSRP $42,400
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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

Black Bay Chrono S&G
Diameter
44.3mm
41mm
Lug-to-Lug
50mm
n/a
Thickness
16.9mm
14.4mm
lowest
Water Resistance
100m
200m
highest
Power Reserve
60h
70h
highest
MSRP
$42,400
n/a
Movement
Omega 9904
Tudor MT5813
Case
7 specsCrystal & Dial
2 specsMovement
5 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 Tudor Black Bay Chrono S&G is widely praised for its cohesive two-tone design, which injects personality and offers an approachable entry into two-tone trends with understated satin finishes. Owners and reviewers highlight its robust build quality, comfortable bracelet with an amazing clasp, and solid power reserve. The MT5813 movement is noted for smooth chronograph operation. Some find the watch gaudy and retro, with a substantial feel, and legibility can be challenging due to white hands blending with silvery chronograph elements. The 45-minute register is considered less practical than a 60-minute one, and the sub-dials are seen as slightly too small. One owner notes that the gold weight on the fabric strap creates a slight imbalance. Overall, owners and reviewers rate the Tudor Black Bay Chrono S&G highly for its striking two-tone aesthetic and value at the price point.
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