Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsZelos Spearfish GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

OSAR-D (Original SAR with Date) Automatic 41mm
MarathonOSAR-D (Original SAR with Date) Automatic 41mm
MSRP $1,800
Spearfish GMT
ZelosSpearfish GMT
MSRP $999

At a glance

8 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 41mm41mm
Spearfish GMT40mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 41mm40h
Spearfish GMT40h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 41mm300m
Spearfish GMT200m
MSRP
OSAR-D (Original SAR with Date) Automatic 41mm$1,800
Spearfish GMT$999

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
41mm
40mm
Lug-to-Lug
43.5mm
40mm
Lug Width
18mm
20mm
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
Black
Frost

Movement

1 specs
Caliber
Sellita SW220-1
Sellita SW330-2

Pricing

1 specs
MSRP
$1,800
$999

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

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

The Marathon OSAR-D (Original SAR with Date) Automatic 41mm is noted for its highly legible white dial with applied hour markers and a functional date magnifier, emphasizing its tool-watch purpose. Its Swiss-made Sellita SW200-1 movement is considered reliable and serviceable. One reviewer found the bracelet lacked refinement and preferred the rubber strap option. Overall, owners and reviewers appreciate the Marathon OSAR-D (Original SAR with Date) Automatic 41mm for its excellent legibility and robust movement.

Zelos Spearfish GMT

The Zelos Spearfish GMT is widely praised for its exceptional value, with reviewers highlighting its superb finishing, flawless machining, and a tool-less micro-adjustment clasp that exceeds its price point. It features a La Joux-Perret G100 movement with a 68-hour power reserve, achieving an average accuracy of +2.6 seconds per day, or a Miyota 9075 movement offering flier-style GMT functionality. The 40mm case and bidirectional 48-click ceramic bezel are well-executed, though one reviewer noted a minor compromise in the end link fit. Overall, owners and reviewers rate the Zelos Spearfish GMT highly for its impressive finishing and value proposition.

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