Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsCWC RN Automatic Divers Watch Mk.2 with Date
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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.

OSAR-D (Original SAR with Date) Automatic 41mm

RN Automatic Divers Watch Mk.2 with Date
Diameter
41mm
41mm
Lug-to-Lug
43.5mm
lowest
47mm
Thickness
13mm
n/a
Water Resistance
300m
300m
MSRP
$1,800
$1,249
lowest
Movement
Sellita SW220-1
Sellita SW200-1
Case
4 specsCrystal & Dial
2 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Marathon OSAR-D (Original SAR with Date) Automatic 41mm is noted for its high legibility, featuring large hour markers and a white dial with applied indices. A functional date magnifier is present. The watch utilizes a reliable Sellita SW200-1 automatic movement. One reviewer found the bracelet lacked refinement and preferred the rubber strap option. On balance, reviewers highlight the Marathon OSAR-D (Original SAR with Date) Automatic 41mm's strong legibility and functional design as its primary strengths.
Owners widely praise the CWC RN Automatic Divers Watch Mk.2 with Date for its authentic vintage look and legible dial, with reviewers noting its faithful homage to the 1980 original and durable 41mm case. The watch features an upgraded sapphire crystal and improved lume, and its 120-click bezel is described as perfectly clicking. Some find the vintage-tinted dial and hands' gold tone slightly too pronounced and the applied paint too glossy, while the day/date function draws mixed opinions. On balance, owners and reviewers rate the CWC RN Automatic Divers Watch Mk.2 with Date highly for its authentic vintage aesthetic and robust build.
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