Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsUnimatic Modello Uno U1-EN
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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

Modello Uno U1-EN
Diameter
41mm
40mm
Lug-to-Lug
48mm
n/a
Thickness
14mm
n/a
Water Resistance
300m
300m
Power Reserve
n/a
41h
MSRP
$2,500
$880
lowest
Movement
Sellita SW200-1
Seiko NH35
Case
5 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 Unimatic Modello Uno U1-EN's impressive case finishing and minimalist, utilitarian design, viewing its style as the primary draw and good value for the quality. Reviewers highlight clever case details, a mix of brushed and polished finishes, and a matte black dial that offers hypnotic light play. The watch uses a reliable Seiko NH35 automatic movement and has a 40mm case size that reviewers note can wear larger than specs suggest. Some owners found the included strap options unsatisfactory, and one reviewer noted the Super-LumiNova lume was slightly uneven between the dial, hands, and bezel pearl, while another found the lume on indices and hands weak. On balance, owners and reviewers rate the Unimatic Modello Uno U1-EN highly for its distinctive minimalist design and impressive case finishing at its price point.
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