Which is cheaper, the AVI-8 Flyboy Airmaster GMT Automatic or the Seestern S471 Double Crown Diver?

At MSRP the Seestern S471 Double Crown Diver is the cheaper of the two at $179, against $365 for the AVI-8 Flyboy Airmaster GMT Automatic — a $186 gap before any retailer discounting.

Which is bigger, the AVI-8 Flyboy Airmaster GMT Automatic or the Seestern S471 Double Crown Diver?

The AVI-8 Flyboy Airmaster GMT Automatic wears larger at 40mm versus 38mm for the Seestern S471 Double Crown Diver — a 2mm difference across the dial.

Which has better water resistance, the AVI-8 Flyboy Airmaster GMT Automatic or the Seestern S471 Double Crown Diver?

The Seestern S471 Double Crown Diver 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 Seestern S471 Double Crown Diver?

The Seestern S471 Double Crown Diver carries a 35h+-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 Seestern S471 Double Crown Diver?

Both watches run automatic movements — the AVI-8 Flyboy Airmaster GMT Automatic uses the NH34 and the Seestern S471 Double Crown Diver uses the Miyota 8215.

Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsSeestern S471 Double Crown Diver

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

Seestern S471 Double Crown Diver

S471

MSRP $179

At a glance

13 of 29 specs differ

Diameter

Flyboy Airmaster GMT Automatic40mm

S471 Double Crown Diver38mm

Power Reserve

Flyboy Airmaster GMT Automatic40h

S471 Double Crown Diver35h+h

Water Resistance

Flyboy Airmaster GMT Automatic50m

S471 Double Crown Diver100m

MSRP

Flyboy Airmaster GMT Automatic$365

S471 Double Crown Diver$179

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

Black

Blue

Movement

5 specs

Caliber

NH34

Miyota 8215

Beat Rate

28,800 vph

3 vph

Power Reserve

40h

35h+h

Jewels

Complications

None

Date

Pricing

1 specs

MSRP

$365

$179

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