Side by side

Fortis Flieger F-39 Werk 7vsPhoibos Leviathan

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

Flieger F-39 Werk 7
FortisFlieger F-39 Werk 7
MSRP $4,510
Leviathan
PhoibosLeviathan
MSRP $399

At a glance

10 of 29 specs differ
Diameter
Flieger F-39 Werk 739mm
Leviathan40mm
Power Reserve
Flieger F-39 Werk 738h
Leviathan40h
Water Resistance
Flieger F-39 Werk 7200m
Leviathan200m
MSRP
Flieger F-39 Werk 7$4,510
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
Werk 7 (Manufacture)
SII NH35
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$4,510
$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 Werk 7

The Fortis Flieger is widely praised for its superb readability, robust build quality, and phenomenal fit and finish, with reviewers noting the practical Type-A dial and utilitarian design. The F-39 models are noted to wear large due to their lug-to-lug distance, and the UW-30 movement offers a 38-hour power reserve, while other variants feature a 70-hour power reserve. On balance, reviewers highlight the Fortis Flieger's modern, stylish take on pilot's watches, balancing legibility with unique aesthetics.

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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