Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsResco DLC White
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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.

GSAR (Government Search & Rescue) Diver's Automatic

DLC White
Diameter
41mm
44mm
Lug-to-Lug
48mm
lowest
51.4mm
Thickness
14mm
13.5mm
lowest
Water Resistance
300m
highest
200m
MSRP
$2,500
$2,155
lowest
Movement
Sellita SW200-1
Sellita SW200-1
Case
6 specsCrystal & Dial
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Marathon GSAR (Government Search & Rescue) Diver's Automatic is widely praised as a versatile and well-made tool watch, with reviewers highlighting its legibility, utilitarian build, and comfort. Owners appreciate the tritium gas tubes for exceptional illumination in darkness, a feature noted as superior to some alternatives. The 41mm case size is considered ideal by some, though one owner found it wore tall and bumped on objects. While the watch is generally seen as a solid value for a Swiss-made tool watch, some owners have reported quality control issues requiring warranty service. Overall, owners and reviewers rate the Marathon GSAR (Government Search & Rescue) Diver's Automatic highly for its robust build and constant legibility from tritium.
Owners report satisfaction with the DLC coating, with one stating it is considered indestructible and the gold standard. Another owner chose the Resco DLC White specifically for this coating, expecting it to resist scratches better than previous coatings. One owner noted rust on the case by the time and date adjusting screw of a different Resco model, which the company stated was normal. Overall, owners value the durability and scratch resistance of the DLC coating on the Resco DLC White.
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