Side by side
Borealis Watch Co. Caloura 300mvsSheffield 1A
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Caloura 300m42mm
1A40mm
Power Reserve
Caloura 300m40h
1A—
Water Resistance
Caloura 300m300m
1A200m
MSRP
Caloura 300m$275
1A$223
Full specifications
Case
5 specsDiameter
42mm
40mm
Thickness
13.9mm
12.8mm
Lug-to-Lug
44.20mm
46mm
Lug Width
22mm
20mm
Water Resistance
300m
200m
Crystal & Dial
2 specsDial Color
Black
White/Blue
Lume
BGW9
Swiss blue lume
Movement
2 specsCaliber
NH35
Seiko NH35A
Power Reserve
40h
—
Pricing
1 specsMSRP
$275
$223
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