Marathon Arctic OSAR 46mm AutomaticvsMarathon JDD (Jumbo Day/Date) Anthracite 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.

Arctic OSAR 46mm Automatic

JDD (Jumbo Day/Date) Anthracite Diver's Automatic
Diameter
46mm
46mm
Lug-to-Lug
n/a
55mm
Thickness
13mm
lowest
18mm
Water Resistance
300m
300m
MSRP
$2,500
lowest
$3,250
Movement
Sellita SW220-1
Sellita SW220-1
Case
4 specsCrystal & Dial
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners praise the Marathon Arctic OSAR 46mm Automatic for its overbuilt toughness and industrial, instrument-like aesthetic, with some preferring the Arctic dial for legibility. One owner notes the MaraGlo luminous paint is likened to sliced eggs. The watch features a Swiss automatic movement and 300M ISO-rated water resistance. Some owners question its rising price and luxury positioning, with one noting poor lume and movement performance. Overall, owners rate the Marathon Arctic OSAR 46mm Automatic highly for its rugged, tool-watch build and legibility.
The Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic is widely praised as a tough, underrated tool watch with excellent legibility due to its tritium lume. Owners appreciate its robust build and lifestyle appeal, though its 46mm size is a common point of criticism, with some finding it heavy and top-heavy. One reviewer noted the white day/date discs clash with the anthracite dial, and an owner observed the watch running about 10 seconds fast over three days. On balance, owners and reviewers rate the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic highly for its robust build and excellent legibility as a tool watch, despite its substantial size.
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