Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsGrand Seiko SLGH017

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
SLGH017
Grand SeikoSLGH017
MSRP $10,500

At a glance

10 of 29 specs differ
Diameter
Flyboy Airmaster GMT Automatic40mm
SLGH01740mm
Power Reserve
Flyboy Airmaster GMT Automatic40h
SLGH01780h
Water Resistance
Flyboy Airmaster GMT Automatic50m
SLGH017100m
MSRP
Flyboy Airmaster GMT Automatic$365
SLGH017$10,500

Full specifications

Case

6 specs
Category
GMT
Dress
Thickness
11.7mm
Lug-to-Lug
47mm
Lug Width
22mm
Material
316L Stainless Steel
Titanium
Water Resistance
50m
100m

Crystal & Dial

1 specs
AR Coating
Inner
Yes

Movement

2 specs
Caliber
NH34
9SA5
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$365
$10,500

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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 SLGH017

Grand Seiko SLGH017 owners and reviewers widely praise its impeccable finishing on the applied markers and handset, and its lightweight titanium case and bracelet. The high-beat 9SA5 movement is noted for its approximately 80-hour power reserve, with accuracy figures reported by owners ranging from +4 sec/day to +5 to -3 seconds per day, though some owners express concerns about accuracy deviating significantly from specifications. Some find the "Night Birch" dial stunning and appreciate the Evo 9 case design, while others note the dial texture appears less pronounced on its matte black surface and criticize the handset's proportions and lack of lume. The Grand Seiko SLGH017 is priced at €10,500. On balance, owners and reviewers rate the Grand Seiko SLGH017 highly for its lightweight titanium construction and impeccable finishing.

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