Side by side

Fortis Flieger F-43 BicompaxvsPhoibos Leviathan

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

Flieger F-43 Bicompax
FortisFlieger F-43 Bicompax
MSRP $4,180
Leviathan
PhoibosLeviathan
MSRP $399

At a glance

12 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
Leviathan40mm
Power Reserve
Flieger F-43 Bicompax58h
Leviathan40h
Water Resistance
Flieger F-43 Bicompax200m
Leviathan200m
MSRP
Flieger F-43 Bicompax$4,180
Leviathan$399

Full specifications

Case

5 specs
Category
Chronograph
Diver
Diameter
43mm
40mm
Thickness
14.5mm
13mm
Lug-to-Lug
48mm
Lug Width
22mm
20mm

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Original
Black
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Sellita SW510 BH a
SII NH35
Power Reserve
58h
40h
Jewels
27
25

Pricing

1 specs
MSRP
$4,180
$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-43 Bicompax

Owners widely praise the Fortis Original for its tool-watch aesthetic, legibility, and robust construction, with many noting excellent lume that lasts all night and precise day/date changes at midnight. The brushed stainless steel case is well-finished, and the 38mm size is considered comfortable and well-weighted despite being smaller than modern watches. Accuracy figures range from +2 seconds/day to +8 seconds/day, and some owners compare Fortis quality favorably to Omega. However, some users find the MSRP too high compared to brands like Sinn and Damasko, and one owner reported internal parts dislodging from a limited edition model. Concerns have also been raised about stripped lug screws on B-42 models and potential parts shortages due to past bankruptcy protection filings. Overall, owners rate the Fortis Original highly for its durable construction and tool-watch functionality at a competitive price point.

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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