Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsRedwood Watches Marine Engineer
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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

Marine Engineer
Diameter
41mm
40mm
Lug-to-Lug
48mm
n/a
Thickness
14mm
13.7mm
lowest
Water Resistance
300m
300m
Power Reserve
n/a
42h
MSRP
$2,500
$439
lowest
Movement
Sellita SW200-1
Seiko NH38
Case
4 specsCrystal & Dial
1 specsMovement
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 Redwood Watches Marine Engineer for its exceptional value, particularly noting the sapphire crystal and durable case construction. The bezel action is described as tight and grippy with no back play, and the lume is reported to mellow nicely after an initial bright glow. One owner expressed a desire for a different movement than the Miyota 82S0. Overall, owners rate the Redwood Watches Marine Engineer highly for its robust build and impressive features at its price point.
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