Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsMaystone 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
Sea Storm MK2 GMT41.50mm
Prosperity GMT38mm
Power Reserve
Sea Storm MK2 GMT40h
Prosperity GMT41h
Water Resistance
Sea Storm MK2 GMT300m
Prosperity GMT100m
MSRP
Sea Storm MK2 GMT$415
Prosperity GMT$443
Full specifications
Case
6 specsCategory
Diver
—
Diameter
41.50mm
38mm
Thickness
14.15mm
11.9mm
Lug-to-Lug
48.50mm
46mm
Lug Width
20mm
20mm
Water Resistance
300m
100m
Crystal & Dial
2 specsDial Color
Black
Red
Lume
BGW9
string
Movement
2 specsCaliber
NH34
Seiko NH34
Power Reserve
40h
41h
Pricing
1 specsMSRP
$415
—
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