Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsMarin Instruments Standard Skin-Diver OS
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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

Standard Skin-Diver OS
Diameter
41mm
39mm
Lug-to-Lug
48mm
n/a
Thickness
14mm
n/a
Water Resistance
300m
highest
200m
MSRP
$2,500
$1,095
lowest
Movement
Sellita SW200-1
Sellita SW200-1
Case
6 specsCrystal & Dial
2 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 widely praise the Marin Instruments Standard Skin-Diver OS for its beautiful appearance, which improves significantly in person, and its great build quality, making it a well-balanced daily wearer. Reviewers note its modern take on skin diver design with a 39mm case featuring a mostly brushed finish and a fully lumed 60-click bezel with smooth action. The watch is powered by a Sellita SW200-1 automatic movement and offers 200m water resistance. Some owners find the "SKIN-DIVER" text on the dial to be contrived, and one reviewer noted the lume was just okay compared to other brands. Overall, owners and reviewers rate the Marin Instruments Standard Skin-Diver OS highly for its attractive design and solid build at its price point.
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