Which is cheaper, the Borealis Watch Co. Caloura 300m or the Fortis Stratoliner S-41?

At MSRP the Borealis Watch Co. Caloura 300m is the cheaper of the two at $275, against $5,450 for the Fortis Stratoliner S-41 — a $5,175 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Caloura 300m or the Fortis Stratoliner S-41?

The Borealis Watch Co. Caloura 300m wears larger at 42mm versus 41mm for the Fortis Stratoliner S-41 — a 1mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Caloura 300m or the Fortis Stratoliner S-41?

The Borealis Watch Co. Caloura 300m is rated to 300m versus 200m for the Fortis Stratoliner S-41.

Which has a longer power reserve, the Borealis Watch Co. Caloura 300m or the Fortis Stratoliner S-41?

The Fortis Stratoliner S-41 carries a 60-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 Fortis Stratoliner S-41?

Both watches run automatic movements — the Borealis Watch Co. Caloura 300m uses the NH35 and the Fortis Stratoliner S-41 uses the Manufacture Caliber WERK 17.

Side by side

Borealis Watch Co. Caloura 300mvsFortis Stratoliner S-41

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

Fortis Stratoliner S-41

S-41

MSRP $5,450

At a glance

12 of 29 specs differ

Diameter

Caloura 300m42mm

Stratoliner S-4141mm

Power Reserve

Caloura 300m40h

Stratoliner S-4160h

Water Resistance

Caloura 300m300m

Stratoliner S-41200m

MSRP

Caloura 300m$275

Stratoliner S-41$5,450

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Dial Color

Black

White

Lume

BGW9

None

Movement

3 specs

Caliber

NH35

Manufacture Caliber WERK 17

Power Reserve

40h

60h

Jewels

Pricing

1 specs

MSRP

$275

$5,450

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