Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsLongines SPIRIT

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

Flyboy Airmaster GMT Automatic
AVI-8Flyboy Airmaster GMT Automatic
MSRP $365
SPIRIT
LonginesSPIRIT
MSRP $2,850

At a glance

22 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
SPIRIT37mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
SPIRIT72h
Water Resistance
Flyboy Airmaster GMT Automatic50m
SPIRIT100m
MSRP
Flyboy Airmaster GMT Automatic$365
SPIRIT$2,850

Full specifications

Case

9 specs
Category
GMT
Diameter
40mm
37mm
Thickness
11.7mm
Lug-to-Lug
44.8mm
Lug Width
19mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Water Resistance
50m
100m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Both sides
Dial Color
Black
Ivory
Indices
Applied
Applied Arabic numerals
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
NH34
L888.4
Beat Rate
28,800 vph
25,200 vph
Power Reserve
40h
72h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date

Pricing

1 specs
MSRP
$365
$2,850

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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.

AVI-8 Flyboy Airmaster GMT Automatic

Owners widely praise the AVI-8 Flyboy Airmaster GMT Automatic for its robust build quality, intricate three-timezone function, and crisp dial texture. The watch is noted for its wearable 41mm case size and 48.5mm lug-to-lug, with an internally positioned GMT complication that maintains a clean dial appearance. Some owners report the stock leather strap feels cheap and limits strap changing options. On balance, owners rate the AVI-8 Flyboy Airmaster GMT Automatic highly for its solid finishing and value, particularly highlighting the dial's depth and texture.

Longines SPIRIT

Owners and reviewers widely praise the Longines Spirit for its exceptional finishing, refined vintage-inspired design, and strong value proposition, with many finding the 37mm and 40mm variants to be a "sweet-spot" size for wearability. The champagne dial with applied indices on the 37mm model is noted for its depth and legibility, while the L688.4 movement in the Chronograph is appreciated for its COSC certification and silicon balance spring. Some owners report accuracy within COSC specifications, and the 72-hour power reserve is a frequently cited positive. However, some community members find the bracelet finishing and end links less refined than competitors, and one owner noted the presence of three different fonts on the dial numbers of the 37mm. The 37mm model's non-screw-down crown despite 100m water resistance and the lume strength are also flagged as potential drawbacks by some.

From video reviewers

The Longines Spirit's reliable COSC-certified movement, Caliber L888.4, with a 72-hour power reserve and a silicone balance spring, is a notable strength. A potential weakness is the watch's relatively high price point compared to its competitors, making it a drawback for some. Reviewers disagree on whether the dial colour shift is a notable feature, with some appreciating it and others not mentioning it as a point of contention.

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