Borealis Watch Co. Porto Covo Black & GoldvsMarathon 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.

Porto Covo Black & Gold

GSAR (Government Search & Rescue) Diver's Automatic
Diameter
40mm
41mm
Lug-to-Lug
42.5mm
lowest
48mm
Thickness
12.3mm
lowest
14mm
Water Resistance
300m
300m
MSRP
$350
lowest
$2,500
Movement
Sellita SW200-1
Sellita SW200-1
Case
5 specsCrystal & Dial
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Borealis Porto Covo Black & Gold for its exceptional value, with one owner noting its "floating" indices enhance its appearance and another finding it a versatile everyday and business-casual timepiece. Reviewers highlight the striking orange Cerakote case and unique, elevated hour markers integrated into the rehaut that cast shadows and add visual depth. One owner found the black lume to be virtually non-existent. The Borealis Porto Covo Black & Gold is priced at $335.75, with one source listing it as a diver choice within a $1000 microbrand collection. On balance, owners and reviewers rate the Borealis Porto Covo Black & Gold highly for its striking design elements and value at the price point.
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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