Side by side
Borealis Watch Co. Porto CovovsSerket Watch Co Reef Mariana
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Porto Covo40mm
Reef Mariana40mm
Power Reserve
Porto Covo40h
Reef Mariana—
Water Resistance
Porto Covo300m
Reef Mariana200m
MSRP
Porto Covo$415
Reef Mariana$449
Full specifications
Case
6 specsCategory
Diver
—
Diameter
40mm
40mm
Thickness
11.6mm
13.2mm
Lug-to-Lug
42.5mm
47.5mm
Lug Width
20mm
20mm
Water Resistance
300m
200m
Crystal & Dial
1 specsDial Color
Black
Orange
Movement
2 specsCaliber
Miyota 9039
Seiko NH35
Power Reserve
40h
—
Pricing
1 specsMSRP
$415
$449
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