Side by side
Borealis Watch Co. Caloura 300mvsOak & Oscar The Humboldt ExP-02
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
15 of 29 specs differDiameter
Caloura 300m42mm
The Humboldt ExP-0239.5mm
Power Reserve
Caloura 300m40h
The Humboldt ExP-0256h
Water Resistance
Caloura 300m300m
The Humboldt ExP-02200m
MSRP
Caloura 300m$275
The Humboldt ExP-02$2,400
Full specifications
Case
8 specsCategory
Diver
Tool
Diameter
42mm
39.5mm
Thickness
13.9mm
12.4mm
Lug-to-Lug
44.20mm
46.8mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
200m
Caseback
Solid
Display
Crystal & Dial
3 specsCrystal Shape
Flat
Double-domed
Dial Color
Black
Grey
Lume
BGW9
Super-LumiNova BGW9
Movement
3 specsCaliber
NH35
Sellita SW300
Power Reserve
40h
56h
Complications
None
GMT, Chronograph
Pricing
1 specsMSRP
$275
$2,400
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