Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsSerket 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
Sea Storm MK2 GMT41.50mm
Reef Mariana40mm
Power Reserve
Sea Storm MK2 GMT40h
Reef Mariana—
Water Resistance
Sea Storm MK2 GMT300m
Reef Mariana200m
MSRP
Sea Storm MK2 GMT$415
Reef Mariana$449
Full specifications
Case
6 specsCategory
Diver
—
Diameter
41.50mm
40mm
Thickness
14.15mm
13.2mm
Lug-to-Lug
48.50mm
47.5mm
Lug Width
20mm
20mm
Water Resistance
300m
200m
Crystal & Dial
1 specsDial Color
Black
Orange
Movement
2 specsCaliber
NH34
Seiko NH35
Power Reserve
40h
—
Pricing
1 specsMSRP
$415
$449
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