Borealis Watch Co. Caloura 300mvsIslander Black Dial Automatic Diver with DLC Case

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Caloura 300m
Borealis Watch Co.Caloura 300m

MSRP $275

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Buy from Borealis Watch Co. Used on eBay
Black Dial Automatic Diver with DLC Case
IslanderBlack Dial Automatic Diver with DLC Case

MSRP $429

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Buy from Islander Used on eBay

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Borealis Watch Co. Caloura 300m at true scale

Caloura 300m

Islander Black Dial Automatic Diver with DLC Case at true scale

Black Dial Automatic Diver with DLC Case

Diameter

42mm

43mm

Lug-to-Lug

44.2mm

lowest

46mm

Thickness

13.9mm

lowest

14mm

Water Resistance

300m

highest

200m

MSRP

$275

lowest

$429

Movement

Seiko NH35

Seiko NH36

Case

5 specs
Diameter
42mm
43mm
Thickness
13.9mm
14mm
Lug-to-Lug
44.2mm
46mm
Water Resistance
300m
200m
Caseback
n/a
Engraved screw-in back

Crystal & Dial

3 specs
Crystal Shape
n/a
Flat
AR Coating
n/a
Yes
Lume
BGW9
None

Movement

1 specs
Caliber
Seiko NH35
Seiko NH36

Pricing

1 specs
MSRP
$275
$429
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