Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsSeaholm Offshore
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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

Offshore
Diameter
41mm
41mm
Lug-to-Lug
48mm
n/a
Thickness
14mm
n/a
Water Resistance
300m
highest
200m
Power Reserve
n/a
38h
MSRP
$2,500
$825
lowest
Movement
Sellita SW200-1
Sellita SW200-1
Case
5 specsCrystal & Dial
1 specsMovement
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 widely praise the Seaholm Offshore for its execution, noting attention to detail on the brushed dial, a classic no-crown-guard aesthetic, and a beautiful dial color. The domed crystal and solid, quality feel are also frequently highlighted, with one owner finding it a great value. The bracelet's simple screw-link sizing is a practical plus. Seaholm Offshore watches are built to meet ISO 6425 water resistance specifications and offer significant shock and magnetism protection through proprietary components. Overall, owners rate the Seaholm Offshore highly for its detailed finishing and quality feel at its price point.
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