Side by side

Fortis Flieger F-39vsPhoibos Leviathan

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

Flieger F-39
FortisFlieger F-39
MSRP $2,530
Leviathan
PhoibosLeviathan
MSRP $399

At a glance

10 of 29 specs differ
Diameter
Flieger F-3939mm
Leviathan40mm
Power Reserve
Flieger F-3938h
Leviathan40h
Water Resistance
Flieger F-39200m
Leviathan200m
MSRP
Flieger F-39$2,530
Leviathan$399

Full specifications

Case

4 specs
Category
Pilot
Diver
Diameter
39mm
40mm
Thickness
11.5mm
13mm
Lug-to-Lug
46mm
48mm

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Sellita SW200-1
SII NH35
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$2,530
$399

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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.

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.

Phoibos Leviathan

Owners widely praise the Phoibos Leviathan for its excellent value, superb case finishing, and generous lume. The watch is described as visually striking, legible, and well-made, with a unique case design, sapphire crystal, and a comfortable FKM strap or excellent bracelet with a milled clasp and quick adjustments. Some owners note the bezel's staggered jimping can cause fingers to slip, and the beveled crystal can distort the view of indices. Accuracy varies, with one owner reporting losing 5-10 seconds per day without a winder, while others state it keeps accurate time out of the box. The watch is frequently described as heavy and thick, with some owners finding it too large for wrists smaller than 7.5 inches, although newer models feature an improved clasp for better comfort and functionality. Overall, owners rate the Phoibos Leviathan highly for its striking design and impressive finishing at an accessible price point.

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