Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsGrand Seiko STGF359

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
STGF359
Grand SeikoSTGF359
MSRP $2,600

At a glance

11 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
STGF35928.9mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
STGF35940h
Water Resistance
Flyboy Airmaster GMT Automatic50m
STGF359100m
MSRP
Flyboy Airmaster GMT Automatic$365
STGF359$2,600

Full specifications

Case

7 specs
Category
GMT
Dress
Diameter
40mm
28.9mm
Thickness
8.7mm
Lug-to-Lug
35.4mm
Lug Width
14mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
100m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

2 specs
Caliber
NH34
4J52
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$365
$2,600

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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.

Grand Seiko STGF359

Owners widely praise the Grand Seiko STGF359 for its elegant pairing with an engagement ring. Some owners find the 29mm case size too small for a man's wrist, while others suggest it can be worn by men with smaller wrists, recommending an in-person try-on. One owner notes potential date wheel misalignment requiring servicing. The bracelet has a maximum perimeter of 185mm, with extra links available. On balance, owners value the Grand Seiko STGF359 for its elegant aesthetic, though its small size is a point of consideration.

From video reviewers

The Grand Seiko STGF359 features a 9F quartz movement with exceptional accuracy, deviating by only +/−10 seconds per year. A drawback of the watch is its 40mm case size, which may be a concern for those with smaller wrists. Reviewers disagree on the type of movement, with one praising the 9F quartz and the other highlighting the spring drive movement.

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