Side by side

Fortis Flieger F-39vsRZE Aspirare

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
Aspirare
RZEAspirare
MSRP $699

At a glance

13 of 29 specs differ
Diameter
Flieger F-3939mm
Aspirare44mm
Power Reserve
Flieger F-3938h
Aspirare40h
Water Resistance
Flieger F-39200m
Aspirare200m
MSRP
Flieger F-39$2,530
Aspirare$699

Full specifications

Case

7 specs
Category
Pilot
Diver
Diameter
39mm
44mm
Thickness
11.5mm
13mm
Lug-to-Lug
46mm
53mm
Lug Width
20mm
22mm
Material
Stainless Steel
Grade 5 Titanium
Caseback
Solid
Solid screw-down

Crystal & Dial

2 specs
AR Coating
Inner
Underside
Dial Color
Black
White

Movement

3 specs
Caliber
Sellita SW200-1
Miyota 9039
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$2,530
$699

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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.

RZE Aspirare

The RZE Aspirare is widely praised for its exceptional value and build quality at $599, featuring a 44mm titanium case with UltraHex coating and a Miyota 9015 movement. Owners find the watch surprisingly comfortable, even on smaller wrists, and appreciate its modern, futuristic design and interchangeable bezel system. Some reviewers note the minute hand appears slightly short relative to the chapter ring, and the 53mm lug-to-lug may be challenging for smaller wrists. On balance, owners and reviewers rate the RZE Aspirare highly for its robust titanium construction and strong value proposition.

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