Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsResco UDT Diver - Brushed Titanium
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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

UDT Diver - Brushed Titanium
Diameter
41mm
42mm
Lug-to-Lug
48mm
lowest
49.7mm
Thickness
14mm
13mm
lowest
Water Resistance
300m
300m
MSRP
$2,500
$1,955
lowest
Movement
Sellita SW200-1
Sellita SW200-1
Case
4 specsCrystal & Dial
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 Resco UDT Diver - Brushed Titanium for its quality, durability, accuracy, and good looks. The watch features a distinctive trident on the second hand and 0.2-second indices on the dial, with its brushed titanium case readily accepting NATO, Zulu, or leather straps. Overall, owners rate the Resco UDT Diver - Brushed Titanium highly for its robust build and versatile wearability.
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