ARES Diver-1 GMTvsMarathon GSAR (Government Search & Rescue) Diver's Automatic
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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.

Diver-1 GMT

GSAR (Government Search & Rescue) Diver's Automatic
Diameter
41mm
41mm
Lug-to-Lug
49.5mm
48mm
lowest
Thickness
13.3mm
lowest
14mm
Water Resistance
1000m
highest
300m
MSRP
$2,850
$2,500
lowest
Movement
ETA 2893-2
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.
Owners widely praise the ARES Diver-1 GMT for its excellent legibility, strong lume, and comfortable rubber strap, with some highlighting its unique triple-timezone capability via the 24-hour bezel and chapter ring. The watch is considered a great value, with used examples around $700, and features an ETA 2893-2 automatic movement. However, community members frequently report significant customer service and communication issues, with some receiving watches not as described. Overall, owners rate the ARES Diver-1 GMT highly for its tool-watch functionality and value, despite noted customer service challenges.
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.
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