Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsOak & Oscar The Humboldt GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
17 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
The Humboldt GMT39.5mm
Power Reserve
Sea Storm MK2 GMT40h
The Humboldt GMT56 hoursh
Water Resistance
Sea Storm MK2 GMT300m
The Humboldt GMT200m
MSRP
Sea Storm MK2 GMT$415
The Humboldt GMT$2,175
Full specifications
Case
9 specsCategory
Diver
GMT
Diameter
41.50mm
39.5mm
Thickness
14.15mm
12.5mm
Lug-to-Lug
48.50mm
46.8mm
Lug Width
20mm
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Brushed
Water Resistance
300m
200m
Caseback
Solid
Solid screw-down
Crystal & Dial
4 specsCrystal Shape
Flat
Double-domed
AR Coating
Inner
Underside
Dial Color
Black
White
Lume
BGW9
Super-LumiNova
Movement
3 specsCaliber
NH34
Sellita SW330
Beat Rate
28,800 vph
4 vph
Power Reserve
40h
56 hoursh
Pricing
1 specsMSRP
$415
$2,175
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