Side by side

Fortis Flieger F-43 BicompaxvsZelos Spearfish 3

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
Spearfish 3
ZelosSpearfish 3
MSRP $749

At a glance

11 of 29 specs differ
Diameter
Flieger F-43 Bicompax43mm
Spearfish 340mm
Power Reserve
Flieger F-43 Bicompax58h
Spearfish 340h
Water Resistance
Flieger F-43 Bicompax200m
Spearfish 3200m
MSRP
Flieger F-43 Bicompax$4,180
Spearfish 3$749

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
43mm
40mm
Thickness
14.5mm
11.5mm
Lug-to-Lug
40mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

1 specs
Dial Color
Original
Diver - Forged Carbon

Movement

3 specs
Caliber
Sellita SW510 BH a
La Joux-Perret G100
Power Reserve
58h
40h
Jewels
27
25

Pricing

1 specs
MSRP
$4,180
$749

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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.

Zelos Spearfish 3

The Zelos Spearfish 3 is widely praised for its exceptional finishing, with razor-sharp polish and flawless brushed transitions that owners feel exceed its price point. The 40mm case is noted for its wearability, and the La Joux-Perret G100 movement offers a 68-hour power reserve, with reported accuracy averaging +2.6 seconds per day. Reviewers highlight the exceptionally smooth bi-directional bezel and a tool-less micro-adjustment clasp described as best-in-class among microbrands. The sapphire sandwich construction and lumed bezel are also cited as desirable features. Overall, owners and reviewers rate the Zelos Spearfish 3 highly for its outstanding finishing and value at its price point.

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