Side by side
Borealis Watch Co. Porto CovovsMaystone Watch Co Prosperity GMT
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
Prosperity GMT38mm
Power Reserve
Porto Covo40h
Prosperity GMT41h
Water Resistance
Porto Covo300m
Prosperity GMT100m
MSRP
Porto Covo$415
Prosperity GMT$443
Full specifications
Case
6 specsCategory
Diver
—
Diameter
40mm
38mm
Thickness
11.6mm
11.9mm
Lug-to-Lug
42.5mm
46mm
Lug Width
20mm
20mm
Water Resistance
300m
100m
Crystal & Dial
2 specsDial Color
Black
Red
Lume
BGW9
string
Movement
2 specsCaliber
Miyota 9039
Seiko NH34
Power Reserve
40h
41h
Pricing
1 specsMSRP
$415
—
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