Side by side
Borealis Watch Co. Porto CovovsOblvlo JM Rotor
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Porto Covo40mm
JM Rotor42mm
Power Reserve
Porto Covo40h
JM Rotor42h
Water Resistance
Porto Covo300m
JM Rotor50m
MSRP
Porto Covo$415
JM Rotor$299
Full specifications
Case
6 specsCategory
Diver
Sport
Diameter
40mm
42mm
Thickness
11.6mm
13mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
20mm
Water Resistance
300m
50m
Crystal & Dial
1 specsLume
BGW9
None
Movement
3 specsCaliber
Miyota 9039
Miyota 8215
Power Reserve
40h
42h
Jewels
25
21
Pricing
1 specsMSRP
$415
$299
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