Which is cheaper, the AVI-8 Flyboy Airmaster GMT Automatic or the Grand Seiko SBGD223?

At MSRP the AVI-8 Flyboy Airmaster GMT Automatic is the cheaper of the two at $365, against $320,000 for the Grand Seiko SBGD223 — a $319,635 gap before any retailer discounting.

Which is bigger, the AVI-8 Flyboy Airmaster GMT Automatic or the Grand Seiko SBGD223?

The Grand Seiko SBGD223 wears larger at 44.5mm versus 40mm for the AVI-8 Flyboy Airmaster GMT Automatic — a 4.5mm difference across the dial.

Which has better water resistance, the AVI-8 Flyboy Airmaster GMT Automatic or the Grand Seiko SBGD223?

The Grand Seiko SBGD223 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 SBGD223?

The Grand Seiko SBGD223 carries a 192-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 SBGD223?

The AVI-8 Flyboy Airmaster GMT Automatic runs a automatic caliber (NH34), while the Grand Seiko SBGD223 runs a spring drive (9R01).

Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsGrand Seiko SBGD223

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 SBGD223

sbgd223j

MSRP $320,000

At a glance

12 of 29 specs differ

Diameter

Flyboy Airmaster GMT Automatic40mm

SBGD22344.5mm

Power Reserve

Flyboy Airmaster GMT Automatic40h

SBGD223192h

Water Resistance

Flyboy Airmaster GMT Automatic50m

SBGD223100m

MSRP

Flyboy Airmaster GMT Automatic$365

SBGD223$320,000

Full specifications

Case

7 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

3 specs

Caliber

NH34

9R01

Type

Automatic

Spring Drive

Power Reserve

40h

192h

Pricing

1 specs

MSRP

$365

$320,000

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