Which is cheaper, the AVI-8 Flyboy Airmaster GMT Automatic or the Borealis Watch Co. Caloura 300m?

At MSRP the Borealis Watch Co. Caloura 300m is the cheaper of the two at $275, against $365 for the AVI-8 Flyboy Airmaster GMT Automatic — a $90 gap before any retailer discounting.

Which is bigger, the AVI-8 Flyboy Airmaster GMT Automatic or the Borealis Watch Co. Caloura 300m?

The Borealis Watch Co. Caloura 300m wears larger at 42mm versus 40mm for the AVI-8 Flyboy Airmaster GMT Automatic — a 2mm difference across the dial.

Which has better water resistance, the AVI-8 Flyboy Airmaster GMT Automatic or the Borealis Watch Co. Caloura 300m?

The Borealis Watch Co. Caloura 300m 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 Borealis Watch Co. Caloura 300m?

Both watches run automatic movements — the AVI-8 Flyboy Airmaster GMT Automatic uses the NH34 and the Borealis Watch Co. Caloura 300m uses the NH35.

Side by side

AVI-8 Flyboy Airmaster GMT AutomaticvsBorealis Watch Co. Caloura 300m

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

Borealis Watch Co.Caloura 300m

borealis-caloura-diver-watch

MSRP $275

At a glance

10 of 29 specs differ

Diameter

Flyboy Airmaster GMT Automatic40mm

Caloura 300m42mm

Power Reserve

Flyboy Airmaster GMT Automatic40h

Caloura 300m40h

Water Resistance

Flyboy Airmaster GMT Automatic50m

Caloura 300m300m

MSRP

Flyboy Airmaster GMT Automatic$365

Caloura 300m$275

Full specifications

Case

7 specs

Crystal & Dial

1 specs

Lume

None

BGW9

Movement

1 specs

Caliber

NH34

NH35

Pricing

1 specs

MSRP

$365

$275

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