Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsGrand Seiko SBGE307

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
SBGE307
Grand SeikoSBGE307
MSRP $11,500

At a glance

11 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
SBGE30744.5mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
SBGE30772h
Water Resistance
Flyboy Airmaster GMT Automatic50m
SBGE307200m
MSRP
Flyboy Airmaster GMT Automatic$365
SBGE307$11,500

Full specifications

Case

6 specs
Diameter
40mm
44.5mm
Thickness
14.9mm
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

3 specs
Caliber
NH34
9R66
Type
Automatic
Spring Drive
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$365
$11,500

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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 SBGE307

The Grand Seiko SBGE307 is praised for its unique "lion's mane" textured ivory dial and angular, modern titanium case featuring Zaratsu polishing. Reviewers highlight the aggressive, claw-shaped lugs and the contrasting hairline finishing, as well as the brownish-red GMT hand as a notable accent. The watch is powered by the 9R66 Spring Drive movement, offering a 72-hour power reserve and accuracy rated at +/- 15 seconds per month by one source, and +/- 1 second per day by another. It is priced at $10,700 USD and offers 200m water resistance. On balance, reviewers find the Grand Seiko SBGE307 to be a striking timepiece distinguished by its textured dial and sharp case finishing.

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