Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 46mmvsHamilton Khaki Field Mechanical

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

OSAR-D (Original SAR with Date) Automatic 46mm
MarathonOSAR-D (Original SAR with Date) Automatic 46mm
MSRP $2,500
Khaki Field Mechanical
HamiltonKhaki Field Mechanical
MSRP $725

At a glance

11 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 46mm46mm
Khaki Field Mechanical36mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 46mm40h
Khaki Field Mechanical80h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 46mm300m
Khaki Field Mechanical100m
MSRP
OSAR-D (Original SAR with Date) Automatic 46mm$2,500
Khaki Field Mechanical$725

Full specifications

Case

6 specs
Category
Diver
Field
Diameter
46mm
36mm
Thickness
13mm
10.2mm
Lug-to-Lug
43.5mm
46mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

1 specs
Crystal
Sapphire
Acrylic

Movement

3 specs
Caliber
Sellita SW220-1
H-50
Type
Automatic
Manual
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$2,500
$725

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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 46mm

The Marathon OSAR-D (Original SAR with Date) Automatic 46mm is widely regarded as a rugged and legible timepiece, featuring a familiar geometric dial with MaraGlo lume and a white dial with applied hour markers that enhance legibility. Owners and reviewers note its 300-meter water resistance and the reliable Swiss-made Sellita SW200-1 automatic movement with improved shock protection. The watch is described as large, thick, and heavy, with some owners finding it comfortable on the wrist while others note its substantial presence, particularly at a table. Overall, owners and reviewers appreciate the Marathon OSAR-D (Original SAR with Date) Automatic 46mm for its rugged build and excellent legibility.

Hamilton Khaki Field Mechanical

Owners widely praise the Hamilton Khaki Field Mechanical as an archetype of a field watch, highlighting its thin case, excellent finishing, and smooth winding action, with some calling it the best pure field watch available. The daily winding ritual is considered a charming aspect of ownership, and the branding is noted as tasteful and subtle. One owner specifically appreciates the lugs. A drawback cited is the highly reflective, non-AR-coated crystal, and accuracy ranges from -6 seconds per day to unspecified better performance. Overall, owners rate the Hamilton Khaki Field Mechanical highly for its rugged, all-business aesthetic and value as a quintessential field watch.

From video reviewers

The watch's pure field style design is a significant strength. The lume brightness is a shared weakness. Reviewers disagreed on the power reserve, with one stating 80 hours and another 46 hours.

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