Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsGrand Seiko SLGC009

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
SLGC009
Grand SeikoSLGC009
MSRP $16,900

At a glance

11 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
SLGC00943mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
SLGC00972h
Water Resistance
Flyboy Airmaster GMT Automatic50m
SLGC009200m
MSRP
Flyboy Airmaster GMT Automatic$365
SLGC009$16,900

Full specifications

Case

7 specs
Category
GMT
Chronograph
Diameter
40mm
43mm
Thickness
15.6mm
Lug-to-Lug
50mm
Lug Width
23mm
Material
316L Stainless Steel
Titanium
Water Resistance
50m
200m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

2 specs
Caliber
NH34
9SC5
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$365
$16,900

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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 SLGC009

Owners widely report the Grand Seiko SLGC009 is perceived as "big" but "not obnoxious," with some finding its bold, aggressive, and futuristic design appealing while others deem it too daring for the brand. Opinions are split on its aesthetic, with comparisons ranging from a G-Shock to the Cybertruck. One owner noted a desire for a more offset clasp. The movement is praised by some, though the dial color and hour indexes drew criticism from one voice. The Grand Seiko SLGC009's rumored discontinuation is speculated to potentially aid in value retention. On balance, owners are divided on the Grand Seiko SLGC009's polarizing design, with its movement and wearability being points of discussion.

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