Which is cheaper, the AVI-8 Flyboy Airmaster GMT Automatic or the Sugess Ocean Star S421?

At MSRP the AVI-8 Flyboy Airmaster GMT Automatic is the cheaper of the two at $365, against $449 for the Sugess Ocean Star S421 — a $84 gap before any retailer discounting.

Which has better water resistance, the AVI-8 Flyboy Airmaster GMT Automatic or the Sugess Ocean Star S421?

The Sugess Ocean Star S421 is rated to 300m versus 50m for the AVI-8 Flyboy Airmaster GMT Automatic.

What movement does the AVI-8 Flyboy Airmaster GMT Automatic run compared to the Sugess Ocean Star S421?

Both watches run automatic movements — the AVI-8 Flyboy Airmaster GMT Automatic uses the NH34 and the Sugess Ocean Star S421 uses the Seagull ST2130/Seiko NH35.

Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsSugess Ocean Star S421

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

Sugess Ocean Star S421

S421

MSRP $449

At a glance

11 of 29 specs differ

Diameter

Flyboy Airmaster GMT Automatic40mm

Ocean Star S42140mm

Power Reserve

Flyboy Airmaster GMT Automatic40h

Ocean Star S42140h

Water Resistance

Flyboy Airmaster GMT Automatic50m

Ocean Star S421300m

MSRP

Flyboy Airmaster GMT Automatic$365

Ocean Star S421$449

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

Black

SU116610LB Black

Movement

3 specs

Caliber

NH34

Seagull ST2130/Seiko NH35

Beat Rate

28,800 vph

4 vph

Complications

None

GMT, Chronograph, Moonphase, Date

Pricing

1 specs

MSRP

$365

$449

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