Glycine Combat Sub Sport GMTvsJack Mason Strat-o-timer GMT
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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.

Combat Sub Sport GMT

Strat-o-timer GMT
Diameter
42mm
40mm
Lug-to-Lug
n/a
47mm
Thickness
10.8mm
lowest
13.2mm
Water Resistance
200m
200m
Power Reserve
48h
highest
42h
MSRP
$805
lowest
$1,099
Movement
Sellita SW330-2
Miyota 9075
Case
6 specsCrystal & Dial
5 specsMovement
5 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Glycine Combat Sub Sport GMT for its solid build, comfortable wearability due to its thin profile and curved lugs, and its unique, non-homage design. Reviewers and owners alike note the excellent bezel action and the value proposition. Some owners miss the heft of other models and point out that the cyclops is not as refined as on other luxury dive watches. One owner reports the movement can be regulated to under +1 second per day, while another notes inconsistent power reserve performance, not always reaching 42 hours, and sub-par lume. Overall, owners rate the Glycine Combat Sub Sport GMT highly for its comfortable wearability and unique design at the price.
The watch offers a compelling value proposition, especially when discounted. Cost-saving measures are evident in certain areas of the build.
Owners and reviewers widely praise the Jack Mason Strat-o-timer GMT for its excellent value and impressive fit and finish, particularly noting the quality of the 7-link bracelet and the scratch-resistant sapphire bezel insert. The watch is recognized for offering a true traveler's GMT complication with the Miyota 9075 movement at a competitive price point, with many appreciating its comfortable 40mm tonneau case and vintage styling. Some owners find the hour markers to be a bit chunky, and one user noted slightly scratchy crown operation. Overall, owners rate the Jack Mason Strat-o-timer GMT highly for its exceptional value and build quality at its price point.
The Miyota 9075 true GMT movement is a consistent strength. Reviewers noted the exceptional lightness and comfort due to Grade 2 titanium construction. Opinions on whether further refinements are needed were not shared.
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