Side by side

Fortis Flieger F-39vsLongines LONGINES AVIGATION BIGEYE

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
LONGINES AVIGATION BIGEYE
LonginesLONGINES AVIGATION BIGEYE
MSRP $4,400

At a glance

10 of 29 specs differ
Diameter
Flieger F-3939mm
LONGINES AVIGATION BIGEYE41mm
Power Reserve
Flieger F-3938h
LONGINES AVIGATION BIGEYE40h
Water Resistance
Flieger F-39200m
LONGINES AVIGATION BIGEYE30m
MSRP
Flieger F-39$2,530
LONGINES AVIGATION BIGEYE$4,400

Full specifications

Case

5 specs
Category
Pilot
Chronograph
Diameter
39mm
41mm
Thickness
11.5mm
14.5mm
Lug-to-Lug
46mm
48.7mm
Water Resistance
200m
30m

Crystal & Dial

1 specs
Dial Color
Black
Blue

Movement

3 specs
Caliber
Sellita SW200-1
L688.5
Power Reserve
38h
40h
Jewels
26
25

Pricing

1 specs
MSRP
$2,530
$4,400

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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.

LONGINES AVIGATION BIGEYE

Owners and reviewers widely praise the Longines Avigation Bigeye for its unique, asymmetric dial, vintage military aesthetic, and cohesive design, with one reviewer noting its GPHG Best Revival prize win. The tactile chronograph pusher action and reliable L688.2 column wheel movement are highlighted, as is the watch's legibility and versatile strap-swapping potential due to its 20mm lug width. However, criticisms include the 30-minute sub-dial's three-minute hash marks, which some find compromise reading speed, and the lack of drilled lugs. The watch's thickness, around 14.45mm, is noted as typical for its movement, and some owners mention minor QC issues with chronograph hand alignment and a loud rotor. On balance, owners and reviewers rate the Longines Avigation Bigeye highly for its distinctive vintage-inspired design and solid chronograph performance at its price point.

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