Which is cheaper, the Borealis Watch Co. Caloura 300m or the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316?

At MSRP the Borealis Watch Co. Caloura 300m is the cheaper of the two at $275, against $379 for the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 — a $104 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Caloura 300m or the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316?

The Borealis Watch Co. Caloura 300m wears larger at 42mm versus 40mm for the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 — a 2mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Caloura 300m or the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316?

The Borealis Watch Co. Caloura 300m is rated to 300m versus 200m for the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316.

What movement does the Borealis Watch Co. Caloura 300m run compared to the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316?

Both watches run automatic movements — the Borealis Watch Co. Caloura 300m uses the NH35 and the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 uses the Seiko NH34.

Side by side

Borealis Watch Co. Caloura 300mvsIslander Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316

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

Islander Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316

islander-calabro-gmt-world-time-automatic-watch-with-anthracite-dial-isl-316

MSRP $379

At a glance

17 of 29 specs differ

Diameter

Caloura 300m42mm

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-31640mm

Power Reserve

Caloura 300m40h

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316—

Water Resistance

Caloura 300m300m

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316200m

MSRP

Caloura 300m$275

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316$379

Full specifications

Case

8 specs

Crystal & Dial

4 specs

AR Coating

Inner

Underside

Dial Color

Black

—

Indices

Applied

—

Lume

BGW9

None

Movement

4 specs

Caliber

NH35

Seiko NH34

Beat Rate

28,800 vph

0 vph

Power Reserve

40h

Jewels

Pricing

1 specs

MSRP

$275

$379

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