Side by side

Formex Field AutomaticvsFortis Flieger F-39

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Field Automatic
FormexField Automatic
MSRP $881
Flieger F-39
FortisFlieger F-39
MSRP $2,530

At a glance

11 of 29 specs differ
Diameter
Field Automatic40mm
Flieger F-3939mm
Power Reserve
Field Automatic41h
Flieger F-3938h
Water Resistance
Field Automatic150m
Flieger F-39200m
MSRP
Field Automatic$881
Flieger F-39$2,530

Full specifications

Case

6 specs
Category
Field
Pilot
Diameter
40mm
39mm
Thickness
10.6mm
11.5mm
Lug-to-Lug
46.6mm
46mm
Material
Titanium
Stainless Steel
Water Resistance
150m
200m

Crystal & Dial

2 specs
Dial Color
Ash Grey
Black
Lume
Super-LumiNova
None

Movement

2 specs
Power Reserve
41h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$881
$2,530

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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.

Formex Field Automatic

Owners widely praise the Formex Field Automatic for its lightweight, scratch-resistant Grade 2 titanium case with a hardening treatment and its comfortable wearability, especially with quick-release straps and a carbon clasp. Reviewers and owners alike highlight the dial's legibility and depth, with one noting the Petrol Blue's great color and subtle texture. The Sellita SW200-1 movement is considered a practical choice, with one owner reporting accuracy of +1 second per day. The watch offers 150m water resistance and is seen as good value under $1000. Some owners desire a matching titanium bracelet and find the numeral typography less appealing. Overall, owners and reviewers rate the Formex Field Automatic highly for its robust, comfortable titanium construction and functional dial design at its price point.

Fortis Flieger F-39

Owners and reviewers widely praise the Fortis Flieger F-39 for its robust build quality, excellent finishing often compared favorably to more expensive watches, and legible utilitarian dial with distinctive color accents. The watch is noted for its precise bidirectional bezel action, excellent lume, and comfortable wearability, with one owner reporting accuracy of 1 second fast per day. Some reviewers flag the 39mm case as wearing large due to its lug-to-lug distance, and the 38-hour power reserve of the Sellita SW 200-1 based UW-30 movement is cited as a limitation, though newer versions feature a 70-hour power reserve. Overall, owners and reviewers highly regard the Fortis Flieger F-39 for its tool watch aesthetic and impressive machining and build quality at its price point.

From video reviewers

The 200m water resistance is a notable strength. Reviewers did not reach a consensus on any weaknesses.

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