Marathon GSAR (Government Search & Rescue) Diver's AutomaticvsNezumi Studios Baleine
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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

Baleine
Diameter
41mm
40mm
Lug-to-Lug
48mm
47mm
lowest
Thickness
14mm
12.1mm
lowest
Water Resistance
300m
highest
200m
Power Reserve
n/a
42h
MSRP
$2,500
$821
lowest
Movement
Sellita SW200-1
Miyota 9039
Case
5 specsCrystal & Dial
2 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 Nezumi Studios Baleine for its stylish design updates, comfortable 40mm case size, and the soft feel of its strap, with one owner noting its striking appearance garners significant attention. Reviewers highlight its exceptional value, with the automatic version priced competitively, and appreciate the coin-edged bezel action. The watch features a boxed sapphire crystal, signed crown, buckle, and case back, and a textured matte black dial with applied numerals filled with warm-toned lume. Accuracy figures for the Miyota 9039 movement are stated as -10/+30 seconds per day, though actual performance is expected to be better, with one owner reporting initial fast running that settled. Some owners find the 40mm size ideal, while one wished for a smaller case. The gold DLC coating is a matter of personal preference, though it is acknowledged to be eye-catching. The included leather strap did not hold up well to sunscreen for one owner.
The cohesive, original vintage-inspired design is the primary strength. Lume performance is a weakness.
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