Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsUnimatic Modello Uno U1-FDN
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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-FDN
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-FDN for its well-finished 40mm case and impressive build quality for the price, with its minimal, utilitarian design and hypnotic dial being singled out as technical instrument-like. However, some reviewers note the Super-LumiNova application can be slightly uneven between the dial, hands, and bezel pearl. One owner found the clasp sharp, and community members question the pricing given the Seiko NH35 movement. Overall, owners and reviewers rate the Unimatic Modello Uno U1-FDN highly for its exceptional case finishing and striking minimalist design at its price point.
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