Side by side

Marathon OSAR-D (Original SAR with Date) Automatic 36mmvsFortis Flieger F-39

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

OSAR-D (Original SAR with Date) Automatic 36mm
MarathonOSAR-D (Original SAR with Date) Automatic 36mm
MSRP $1,200
Flieger F-39
FortisFlieger F-39
MSRP $2,530

At a glance

11 of 29 specs differ
Diameter
OSAR-D (Original SAR with Date) Automatic 36mm36mm
Flieger F-3939mm
Power Reserve
OSAR-D (Original SAR with Date) Automatic 36mm40h
Flieger F-3938h
Water Resistance
OSAR-D (Original SAR with Date) Automatic 36mm300m
Flieger F-39200m
MSRP
OSAR-D (Original SAR with Date) Automatic 36mm$1,200
Flieger F-39$2,530

Full specifications

Case

7 specs
Category
Diver
Pilot
Diameter
36mm
39mm
Thickness
13mm
11.5mm
Lug-to-Lug
43.5mm
46mm
Lug Width
18mm
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Movement

3 specs
Caliber
Sellita SW220-1
Sellita SW200-1
Power Reserve
40h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$1,200
$2,530

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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 36mm

Owners widely praise the Marathon OSAR-D (Original SAR with Date) Automatic 36mm for its exceptional legibility, featuring large hour markers and MaraGlo lume. The watch is noted for its comfortable wearability and competent Swiss-made Selitta SW200-1 automatic movement, offering 300-meter water resistance and a sapphire crystal. Some enthusiasts find the price of $1,380 USD on rubber to be excessive, particularly compared to past models or other brands, and the Spartan bracelet is described as lacking refinement. On balance, owners and reviewers find the Marathon OSAR-D Automatic 36mm a reliable and functional tool watch, with its clear dial and robust build being the primary draws.

Fortis Flieger F-39

Owners and reviewers widely praise the Fortis Flieger F-39 for its robust build quality, excellent finishing often compared favorably to more expensive watches, and legible utilitarian dial with distinctive color accents. The watch is noted for its precise bidirectional bezel action, excellent lume, and comfortable wearability, with one owner reporting accuracy of 1 second fast per day. Some reviewers flag the 39mm case as wearing large due to its lug-to-lug distance, and the 38-hour power reserve of the Sellita SW 200-1 based UW-30 movement is cited as a limitation, though newer versions feature a 70-hour power reserve. Overall, owners and reviewers highly regard the Fortis Flieger F-39 for its tool watch aesthetic and impressive machining and build quality at its price point.

From video reviewers

The 200m water resistance is a notable strength. Reviewers did not reach a consensus on any weaknesses.

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