Which is cheaper, the Borealis Watch Co. Caloura 300m or the Hamilton Khaki Aviation Air Race Auto?

At MSRP the Borealis Watch Co. Caloura 300m is the cheaper of the two at $275, against $845 for the Hamilton Khaki Aviation Air Race Auto — a $570 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Caloura 300m or the Hamilton Khaki Aviation Air Race Auto?

The Borealis Watch Co. Caloura 300m wears larger at 42mm versus 38mm for the Hamilton Khaki Aviation Air Race Auto — a 4mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Caloura 300m or the Hamilton Khaki Aviation Air Race Auto?

The Borealis Watch Co. Caloura 300m is rated to 300m versus 50m for the Hamilton Khaki Aviation Air Race Auto.

Which has a longer power reserve, the Borealis Watch Co. Caloura 300m or the Hamilton Khaki Aviation Air Race Auto?

The Hamilton Khaki Aviation Air Race Auto carries a 80-hour power reserve against 40 hours on the Borealis Watch Co. Caloura 300m.

What movement does the Borealis Watch Co. Caloura 300m run compared to the Hamilton Khaki Aviation Air Race Auto?

Both watches run automatic movements — the Borealis Watch Co. Caloura 300m uses the NH35 and the Hamilton Khaki Aviation Air Race Auto uses the H-10.

Side by side

Borealis Watch Co. Caloura 300mvsHamilton Khaki Aviation Air Race Auto

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

Borealis Watch Co.Caloura 300m

borealis-caloura-diver-watch

MSRP $275

Hamilton Khaki Aviation Air Race Auto

h76235731

MSRP $845

At a glance

10 of 29 specs differ

Diameter

Caloura 300m42mm

Khaki Aviation Air Race Auto38mm

Power Reserve

Caloura 300m40h

Khaki Aviation Air Race Auto80h

Water Resistance

Caloura 300m300m

Khaki Aviation Air Race Auto50m

MSRP

Caloura 300m$275

Khaki Aviation Air Race Auto$845

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Lume

BGW9

None

Movement

2 specs

Caliber

NH35

H-10

Power Reserve

40h

80h

Pricing

1 specs

MSRP

$275

$845

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