Side by side
Borealis Watch Co. Caloura 300mvsZRC 1904 IRIDIUM -METAL
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
IRIDIUM -METAL41.5mm
Power Reserve
Caloura 300m40h
IRIDIUM -METAL56h
Water Resistance
Caloura 300m300m
IRIDIUM -METAL1,000m
MSRP
Caloura 300m$275
IRIDIUM -METAL$3,790
Full specifications
Case
6 specsCategory
Diver
—
Diameter
42mm
41.5mm
Thickness
13.9mm
—
Lug-to-Lug
44.20mm
46mm
Lug Width
22mm
20mm
Water Resistance
300m
1000m
Crystal & Dial
1 specsLume
BGW9
None
Movement
2 specsCaliber
NH35
Sellita SW300-1
Power Reserve
40h
56h
Pricing
1 specsMSRP
$275
$3,790
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