Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsJIANGHUN Deep Challenger GMT Diver 300

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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

Deep Challenger GMT Diver 300
Diameter
41mm
42mm
Lug-to-Lug
43.5mm
lowest
49mm
Thickness
13mm
lowest
14mm
Water Resistance
300m
300m
MSRP
$1,800
$368
lowest
Movement
Sellita SW220-1
Seiko NH34
Case
5 specsCrystal & Dial
1 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 JIANGHUN Deep Challenger GMT Diver 300's exceptionally good finishing and surprisingly strong lume, noting impressive wrist presence. Some owners find the 42mm case too thick and large, with one owner wishing for a reduction in height and width, while another notes the watch may not wear small due to its bezel and protruding lugs. One owner reported crooked indexes and a misaligned date window. Overall, owners rate the JIANGHUN Deep Challenger GMT Diver 300 highly for its finishing and lume, despite some concerns about its size and potential alignment issues.
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