DOXA SUB 250T GMTvsSynchron Poseidon
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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.

SUB 250T GMT

Poseidon
Diameter
40mm
41mm
Lug-to-Lug
n/a
45mm
Thickness
n/a
11.9mm
Water Resistance
250m
300m
highest
Power Reserve
50h
68h
highest
MSRP
$2,790
n/a
Movement
Automatic
La Joux-Perret G100
Case
6 specsCrystal & Dial
2 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The DOXA SUB 250T GMT is widely praised for its compact 40mm case, slim 10.85mm thickness, and sub-43mm lug-to-lug measurement, making it exceptionally comfortable and wearable. Reviewers highlight its functional GMT complication, precise bezel action, and the classic Doxa design language, noting its competitive pricing around €2,550 or $2,450. The skeletonized GMT hand is a point of discussion, with some finding it quirky or less intuitive, though others note it looks better in person and is easy to ignore for dive purposes. The watch is available in nine dial colors, with specific limited editions carrying a slight premium. Overall, reviewers rate the DOXA SUB 250T GMT highly for its wearable dimensions and value proposition as a capable dive watch with added GMT functionality.
The watch's refined and wearable 42mm case size is a strength. Reviewers noted the iconic Doxa aesthetic combined with GMT functionality. No shared weaknesses were identified.
Owners widely praise the Synchron Poseidon for its vintage-inspired diver aesthetics, easy-to-read dial, and precise, grippy bezel. The La Joux-Perret G100 movement is consistently noted as a strong point, with owners reporting good timekeeping, one seeing accuracy around -4 seconds per day, and others highlighting its 68-hour power reserve. The winding action and crown operation are described as reassuring, with one reviewer stating it surpasses watches at double the price. Some find the design busy or the branding confusing, and the blasted finish on the steel bezel rim contrasts with the brushed case. One owner noted the included Isofrane strap can be long for smaller wrists. On balance, owners and reviewers rate the Synchron Poseidon highly for its robust build, reliable movement, and excellent value.
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