Side by side

Fortis Flieger F-39 Werk 7vsSternglas Naos Pro Automatik

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

Flieger F-39 Werk 7
FortisFlieger F-39 Werk 7
MSRP $4,510
Naos Pro Automatik
SternglasNaos Pro Automatik
MSRP $755

At a glance

11 of 29 specs differ
Diameter
Flieger F-39 Werk 739mm
Naos Pro Automatik38mm
Power Reserve
Flieger F-39 Werk 738h
Naos Pro Automatik42h
Water Resistance
Flieger F-39 Werk 7200m
Naos Pro Automatik50m
MSRP
Flieger F-39 Werk 7$4,510
Naos Pro Automatik$755

Full specifications

Case

5 specs
Category
Pilot
Dress
Diameter
39mm
38mm
Thickness
11.5mm
9mm
Lug-to-Lug
46mm
42.4mm
Water Resistance
200m
50m

Crystal & Dial

2 specs
Dial Color
Black
Lume
None
Luminova Punkte

Movement

3 specs
Caliber
Werk 7 (Manufacture)
Miyota 9015
Power Reserve
38h
42h
Jewels
26

Pricing

1 specs
MSRP
$4,510
$755

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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 Werk 7

The Fortis Flieger is widely praised for its superb readability, robust build quality, and phenomenal fit and finish, with reviewers noting the practical Type-A dial and utilitarian design. The F-39 models are noted to wear large due to their lug-to-lug distance, and the UW-30 movement offers a 38-hour power reserve, while other variants feature a 70-hour power reserve. On balance, reviewers highlight the Fortis Flieger's modern, stylish take on pilot's watches, balancing legibility with unique aesthetics.

Sternglas Naos Pro Automatik

The Sternglas Naos Pro Automatik is praised for its slim 9mm case and Bauhaus dial design, featuring clear hour markers and a framed date window. Owners note the upgraded Miyota 9015 movement with a 4Hz beat rate. Accuracy is reported as -10/+30 seconds per day, which is not ideal for precision enthusiasts. The five-link bracelet's lack of fitted end-links and the optional bracelet's chunkiness are flagged as areas lacking refinement. Overall, reviewers highlight the Sternglas Naos Pro Automatik's improved wearability and premium feel at its price point.

From video reviewers

The Bauhaus design is a strength. The value proposition is a weakness.

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