Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsLum-Tec B72
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
B7244mm
Power Reserve
Sea Storm MK2 GMT40h
B7240h
Water Resistance
Sea Storm MK2 GMT300m
B72200m
MSRP
Sea Storm MK2 GMT$415
B72$506
Full specifications
Case
7 specsCategory
Diver
Sport
Diameter
41.50mm
44mm
Thickness
14.15mm
—
Lug-to-Lug
48.50mm
51.5mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel (DLC coated)
Water Resistance
300m
200m
Crystal & Dial
3 specsCrystal
Sapphire
Domed Sapphire
Dial Color
Black
B72
Lume
BGW9
None
Movement
2 specsCaliber
NH34
Ronda 515
Type
Automatic
Quartz
Pricing
1 specsMSRP
$415
$506
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