Side by side

Fortis Flieger F-39vsOak & Oscar The Humboldt GMT

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

Flieger F-39
FortisFlieger F-39
MSRP $2,530
The Humboldt GMT
Oak & OscarThe Humboldt GMT
MSRP $2,175

At a glance

16 of 29 specs differ
Diameter
Flieger F-3939mm
The Humboldt GMT39.5mm
Power Reserve
Flieger F-3938h
The Humboldt GMT56 hoursh
Water Resistance
Flieger F-39200m
The Humboldt GMT200m
MSRP
Flieger F-39$2,530
The Humboldt GMT$2,175

Full specifications

Case

7 specs
Category
Pilot
GMT
Diameter
39mm
39.5mm
Thickness
11.5mm
12.5mm
Lug-to-Lug
46mm
46.8mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Brushed
Caseback
Solid
Solid screw-down

Crystal & Dial

4 specs
Crystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Black
White
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
Sellita SW200-1
Sellita SW330
Beat Rate
28,800 vph
4 vph
Power Reserve
38h
56 hoursh
Jewels
26
25

Pricing

1 specs
MSRP
$2,530
$2,175

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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-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.

Oak & Oscar The Humboldt GMT

Oak & Oscar The Humboldt GMT owners widely praise its exceptional accuracy, often running at or near 0 seconds per day, and its comfortable wearability with subtle design details. The construction quality for the price point, sandwich lume, and anti-magnetic properties are also highlighted. Some owners find the bracelet sizing adjustment slightly awkward, and one noted the lume could be brighter. Overall, owners rate the Oak & Oscar The Humboldt GMT highly for its accuracy and comfortable wearability.

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