Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsUnimatic Modello Uno
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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

Modello Uno
Diameter
41mm
40mm
Lug-to-Lug
43.5mm
n/a
Thickness
13mm
n/a
Water Resistance
300m
300m
Power Reserve
n/a
41h
MSRP
$1,800
$740
lowest
Movement
Sellita SW220-1
Seiko NH35
Case
5 specsCrystal & Dial
1 specsMovement
2 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 Unimatic Modello Uno's exceptionally well-finished case and minimalistic, utilitarian design, which feels like a technical instrument. Reviewers note clever case details like mirrored lugs and crown guards, a mix of brushed and polished finishes, and a matte black dial that offers interesting light play. The sapphire crystal's anti-reflective coating creates hypnotic color-swapping effects. Some owners find the stock bracelet and rubber strap uncomfortable, preferring the NATO option. The Seiko NH35 automatic movement is described as reliable. On balance, owners and reviewers rate the Unimatic Modello Uno highly for its distinctive, minimalistic design and impressive case finishing at its price point.
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