Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsCitizen Promaster Professional Diver
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
Promaster Professional Diver44mm
Power Reserve
Sea Storm MK2 GMT40h
Promaster Professional Diver40h
Water Resistance
Sea Storm MK2 GMT300m
Promaster Professional Diver200m
MSRP
Sea Storm MK2 GMT$415
Promaster Professional Diver$431
Full specifications
Case
6 specsDiameter
41.50mm
44mm
Thickness
14.15mm
12mm
Lug-to-Lug
48.50mm
46mm
Lug Width
20mm
22mm
Material
Stainless Steel
Super Titanium
Water Resistance
300m
200m
Crystal & Dial
2 specsCrystal
Sapphire
Mineral
Lume
BGW9
None
Movement
2 specsCaliber
NH34
E168
Type
Automatic
Solar
Pricing
1 specsMSRP
$415
$431
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