Side by side

Fortis Flieger F-43 BicompaxvsLongines SPIRIT

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
SPIRIT
LonginesSPIRIT
MSRP $2,850

At a glance

21 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
SPIRIT37mm
Power Reserve
Flieger F-43 Bicompax58h
SPIRIT72h
Water Resistance
Flieger F-43 Bicompax200m
SPIRIT100m
MSRP
Flieger F-43 Bicompax$4,180
SPIRIT$2,850

Full specifications

Case

8 specs
Category
Chronograph
Diameter
43mm
37mm
Thickness
14.5mm
11.7mm
Lug-to-Lug
44.8mm
Lug Width
22mm
19mm
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Both sides
Dial Color
Original
Ivory
Indices
Applied
Applied Arabic numerals
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
Sellita SW510 BH a
L888.4
Beat Rate
28,800 vph
25,200 vph
Power Reserve
58h
72h
Jewels
27
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date

Pricing

1 specs
MSRP
$4,180
$2,850

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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.

Longines SPIRIT

Owners and reviewers widely praise the Longines Spirit for its exceptional finishing, refined vintage-inspired design, and strong value proposition, with many finding the 37mm and 40mm variants to be a "sweet-spot" size for wearability. The champagne dial with applied indices on the 37mm model is noted for its depth and legibility, while the L688.4 movement in the Chronograph is appreciated for its COSC certification and silicon balance spring. Some owners report accuracy within COSC specifications, and the 72-hour power reserve is a frequently cited positive. However, some community members find the bracelet finishing and end links less refined than competitors, and one owner noted the presence of three different fonts on the dial numbers of the 37mm. The 37mm model's non-screw-down crown despite 100m water resistance and the lume strength are also flagged as potential drawbacks by some.

From video reviewers

The Longines Spirit's reliable COSC-certified movement, Caliber L888.4, with a 72-hour power reserve and a silicone balance spring, is a notable strength. A potential weakness is the watch's relatively high price point compared to its competitors, making it a drawback for some. Reviewers disagree on whether the dial colour shift is a notable feature, with some appreciating it and others not mentioning it as a point of contention.

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