Side by side

Fortis Flieger F-43 BicompaxvsOak & Oscar The Jackson Big Eye

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
The Jackson Big Eye
Oak & OscarThe Jackson Big Eye
MSRP $3,150

At a glance

17 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
The Jackson Big Eye40mm
Power Reserve
Flieger F-43 Bicompax58h
The Jackson Big Eye60 hoursh
Water Resistance
Flieger F-43 Bicompax200m
The Jackson Big Eye50m
MSRP
Flieger F-43 Bicompax$4,180
The Jackson Big Eye$3,150

Full specifications

Case

6 specs
Diameter
43mm
40mm
Thickness
14.5mm
14mm
Lug-to-Lug
46.4mm
Lug Width
22mm
20mm
Finish
Brushed and polished
Brushed
Water Resistance
200m
50m

Crystal & Dial

5 specs
Crystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Original
White
Indices
Applied
Baton
Lume
None
Super-LumiNova

Movement

5 specs
Caliber
Sellita SW510 BH a
Eterna Caliber 39 (Cal. 3907M)
Type
Automatic
Manual
Beat Rate
28,800 vph
4 vph
Power Reserve
58h
60 hoursh
Jewels
27
25

Pricing

1 specs
MSRP
$4,180
$3,150

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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.

Oak & Oscar The Jackson Big Eye

Oak & Oscar The Jackson Big Eye is praised for its balanced design and fine details, featuring a prominent "Big Eye" 30-minute sub-register for improved readability, reminiscent of vintage chronographs. It is powered by the Eterna EMC 3907M manual wind movement with a 60-hour power reserve, column wheel, and flyback function, housed in a 40mm stainless steel case. This limited edition of 50 pieces was priced at $3,150 and included two Horween leather straps and a wallet. On balance, reviewers highlight the Jackson Big Eye's enthusiast-spec chronograph function and readable subdial as key strengths.

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