Which is cheaper, the Borealis Watch Co. Caloura 300m or the Spinnaker Challenger Automatic?

At MSRP the Borealis Watch Co. Caloura 300m is the cheaper of the two at $275, against $289 for the Spinnaker Challenger Automatic — a $14 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Caloura 300m or the Spinnaker Challenger Automatic?

The Spinnaker Challenger Automatic wears larger at 42mm versus 42mm for the Borealis Watch Co. Caloura 300m — a 0mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Caloura 300m or the Spinnaker Challenger Automatic?

The Borealis Watch Co. Caloura 300m is rated to 300m versus 200m for the Spinnaker Challenger Automatic.

What movement does the Borealis Watch Co. Caloura 300m run compared to the Spinnaker Challenger Automatic?

Both watches run automatic movements — the Borealis Watch Co. Caloura 300m uses the NH35 and the Spinnaker Challenger Automatic uses the SII NH35A.

Side by side

Borealis Watch Co. Caloura 300mvsSpinnaker Challenger Automatic

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

Spinnaker Challenger Automatic

challenger-automatic-depth-blue-sp-5159-11

MSRP $289

At a glance

10 of 29 specs differ

Diameter

Caloura 300m42mm

Challenger Automatic42mm

Power Reserve

Caloura 300m40h

Challenger Automatic40h

Water Resistance

Caloura 300m300m

Challenger Automatic200m

MSRP

Caloura 300m$275

Challenger Automatic$289

Full specifications

Case

6 specs

Diameter

42mm

Thickness

13.9mm

19mm

Lug-to-Lug

44.20mm

49.5mm

Lug Width

22mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

300m

200m

Crystal & Dial

2 specs

Dial Color

Black

Blue

Lume

BGW9

None

Movement

1 specs

Caliber

NH35

SII NH35A

Pricing

1 specs

MSRP

$275

$289

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