Side by side

Fortis Flieger F-43 BicompaxvsHamilton American Classic Spirit of Liberty Auto Chrono

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

At a glance

9 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
American Classic Spirit of Liberty Auto Chrono42mm
Power Reserve
Flieger F-43 Bicompax58h
American Classic Spirit of Liberty Auto Chrono40h
Water Resistance
Flieger F-43 Bicompax200m
American Classic Spirit of Liberty Auto Chrono50m
MSRP
Flieger F-43 Bicompax$4,180
American Classic Spirit of Liberty Auto Chrono$2,225

Full specifications

Case

4 specs
Diameter
43mm
42mm
Thickness
14.5mm
14.75mm
Lug-to-Lug
46mm
Water Resistance
200m
50m

Crystal & Dial

1 specs
Dial Color
Original
Black

Movement

3 specs
Caliber
Sellita SW510 BH a
H-21
Power Reserve
58h
40h
Jewels
27
25

Pricing

1 specs
MSRP
$4,180
$2,225

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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.

Hamilton American Classic Spirit of Liberty Auto Chrono

Owners widely praise the Hamilton American Classic Spirit of Liberty Auto Chrono for its impressive craftsmanship, details, and overall finish, noting sharp edges on the mixed brushed and polished lugs that give it a premium look and a refined yet bold presence. The watch offers an improved 60-hour power reserve and increased precision. However, its pushers are noted as being chunky. On balance, owners rate the Hamilton American Classic Spirit of Liberty Auto Chrono highly for its premium finishing and refined presence on the wrist.

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