Side by side

Fortis Flieger F-43 BicompaxvsMarathon GPQ (General Purpose Quartz) Field Watch

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
GPQ (General Purpose Quartz) Field Watch
MarathonGPQ (General Purpose Quartz) Field Watch
MSRP $420

At a glance

14 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
GPQ (General Purpose Quartz) Field Watch34mm
Power Reserve
Flieger F-43 Bicompax58h
GPQ (General Purpose Quartz) Field Watch40h
Water Resistance
Flieger F-43 Bicompax200m
GPQ (General Purpose Quartz) Field Watch30m
MSRP
Flieger F-43 Bicompax$4,180
GPQ (General Purpose Quartz) Field Watch$420

Full specifications

Case

7 specs
Category
Chronograph
Field
Diameter
43mm
34mm
Thickness
14.5mm
11.5mm
Lug-to-Lug
41mm
Lug Width
22mm
16mm
Material
Stainless Steel
Fibreshell Composite
Water Resistance
200m
30m

Crystal & Dial

2 specs
Crystal
Sapphire
Acrylic
Dial Color
Original
Black

Movement

4 specs
Caliber
Sellita SW510 BH a
Swiss High-Torque Quartz (3J, EOL)
Type
Automatic
Quartz
Power Reserve
58h
40h
Jewels
27
25

Pricing

1 specs
MSRP
$4,180
$420

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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.

Marathon GPQ (General Purpose Quartz) Field Watch

Owners widely praise the Marathon GPQ (General Purpose Quartz) Field Watch for its rugged quartz movement, accuracy, and tritium lume. Reviewers and owners alike highlight its solid build, legibility, and comfortable, lightweight wear, making it particularly well-suited for smaller wrists. Some owners, however, consider the price point of $350-420 to be somewhat high. On balance, the consensus is that owners rate the Marathon GPQ (General Purpose Quartz) Field Watch highly for its dependable quartz accuracy and excellent tritium lume.

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