Side by side
Borealis Watch Co. Caloura 300mvsRZE Fortitude GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Caloura 300m42mm
Fortitude GMT41mm
Power Reserve
Caloura 300m40h
Fortitude GMT40h
Water Resistance
Caloura 300m300m
Fortitude GMT200m
MSRP
Caloura 300m$275
Fortitude GMT$719
Full specifications
Case
7 specsCategory
Diver
GMT
Diameter
42mm
41mm
Thickness
13.9mm
12mm
Lug-to-Lug
44.20mm
47mm
Lug Width
22mm
20mm
Material
Stainless Steel
Grade 5 Titanium
Water Resistance
300m
200m
Crystal & Dial
3 specsAR Coating
Inner
Underside
Dial Color
Black
Red
Lume
BGW9
Super-LumiNova BGW9
Movement
2 specsCaliber
NH35
Miyota 9075
Complications
None
GMT
Pricing
1 specsMSRP
$275
$719
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