Which is cheaper, the AVI-8 Flyboy Airmaster GMT Automatic or the Grand Seiko STGK003?

At MSRP the AVI-8 Flyboy Airmaster GMT Automatic is the cheaper of the two at $365, against $31,200 for the Grand Seiko STGK003 — a $30,835 gap before any retailer discounting.

Which is bigger, the AVI-8 Flyboy Airmaster GMT Automatic or the Grand Seiko STGK003?

The AVI-8 Flyboy Airmaster GMT Automatic wears larger at 40mm versus 28.7mm for the Grand Seiko STGK003 — a 11.3mm difference across the dial.

Which has better water resistance, the AVI-8 Flyboy Airmaster GMT Automatic or the Grand Seiko STGK003?

The Grand Seiko STGK003 is rated to 100m versus 50m for the AVI-8 Flyboy Airmaster GMT Automatic.

Which has a longer power reserve, the AVI-8 Flyboy Airmaster GMT Automatic or the Grand Seiko STGK003?

The Grand Seiko STGK003 carries a 50-hour power reserve against 40 hours on the AVI-8 Flyboy Airmaster GMT Automatic.

What movement does the AVI-8 Flyboy Airmaster GMT Automatic run compared to the Grand Seiko STGK003?

Both watches run automatic movements — the AVI-8 Flyboy Airmaster GMT Automatic uses the NH34 and the Grand Seiko STGK003 uses the 9S27.

Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsGrand Seiko STGK003

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

AVI-8 Flyboy Airmaster GMT Automatic

flyboy-airmaster-gmt-automatic-engine-black-av-4128-01

MSRP $365

Grand Seiko STGK003

stgk003j

MSRP $31,200

At a glance

11 of 29 specs differ

Diameter

Flyboy Airmaster GMT Automatic40mm

STGK00328.7mm

Power Reserve

Flyboy Airmaster GMT Automatic40h

STGK00350h

Water Resistance

Flyboy Airmaster GMT Automatic50m

STGK003100m

MSRP

Flyboy Airmaster GMT Automatic$365

STGK003$31,200

Full specifications

Case

7 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

2 specs

Caliber

NH34

9S27

Power Reserve

40h

50h

Pricing

1 specs

MSRP

$365

$31,200

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