Side by side

Fortis Flieger F-43 BicompaxvsFortis Stratoliner S-41

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
Stratoliner S-41
FortisStratoliner S-41
MSRP $5,450

At a glance

8 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
Stratoliner S-4141mm
Power Reserve
Flieger F-43 Bicompax58h
Stratoliner S-4160h
Water Resistance
Flieger F-43 Bicompax200m
Stratoliner S-41200m
MSRP
Flieger F-43 Bicompax$4,180
Stratoliner S-41$5,450

Full specifications

Case

3 specs
Diameter
43mm
41mm
Thickness
14.5mm
14mm
Lug Width
22mm
21mm

Crystal & Dial

1 specs
Dial Color
Original
White

Movement

3 specs
Caliber
Sellita SW510 BH a
Manufacture Caliber WERK 17
Power Reserve
58h
60h
Jewels
27
36

Pricing

1 specs
MSRP
$4,180
$5,450

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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.

Fortis Stratoliner S-41

Owners widely praise the Fortis Stratoliner S-41 for its purpose-built design and outstanding details, particularly its space blue lume and bright orange date on the dial. Reviewers note the WERK 17 movement offers a 60-hour power reserve. However, the Fortis Stratoliner S-41's 41mm case thickness and lug-to-lug distance lead some to perceive it as wearing large, and the dial's small text and flat design are flagged as potential drawbacks. Overall, owners and reviewers highlight the Fortis Stratoliner S-41's unique design and innovative movement as its primary strengths.

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