Omega Constellation Co Axial Master ChronometervsSeagull Day-date Calendar Tonneau Watch


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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.

Constellation Co Axial Master Chronometer

Day-date Calendar Tonneau Watch
Diameter
29mm
36mm
Lug-to-Lug
31.2mm
lowest
40mm
Thickness
12mm
12mm
Water Resistance
50m
50m
Power Reserve
50h
n/a
MSRP
$8,500
$490
lowest
Movement
Omega 8700
ST2100
Case
4 specsCrystal & Dial
2 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely appreciate the Omega Constellation Co Axial Master Chronometer for its clean design and refined, elegant look, with some calling it the most underrated model in Omega's lineup and a personal favorite. Reviewers describe the 29mm Constellation as a handsome, well-built precision chronometer with a silky sun-brushed dial and an elegant monochromatic look. Owners express pride in ownership, viewing it as a potential heirloom. However, some owners note that Omega does not sell alternative straps for the watch. One reviewer considers the 29mm model's 50m water resistance and scarce lume to disqualify it as a sports watch. Owners report that Omega's parts policy for Co-Axial movements can lead to higher servicing costs at official centers. Overall, owners and reviewers highly regard the Omega Constellation Co Axial Master Chronometer for its elegant design and build quality.
Owners widely praise the Seagull Day-date Calendar Tonneau Watch for its solid feel, satisfying weight, and well-made hollow flywheel. The case, bracelet, and day-date function are also considered appealing by some. One owner finds the sub-dials too small to read. On balance, owners rate the Seagull Day-date Calendar Tonneau Watch highly for its tactile build quality and appealing case design.
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