Side by side
Borealis Watch Co. Sea Storm MK2vsGrand Seiko SBGC253
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 MK241.50mm
SBGC25344.5mm
Power Reserve
Sea Storm MK240h
SBGC25372h
Water Resistance
Sea Storm MK2300m
SBGC253200m
MSRP
Sea Storm MK2$475
SBGC253$13,200
Full specifications
Case
7 specsCategory
Diver
Chronograph
Diameter
41.50mm
44.5mm
Thickness
14.15mm
16.8mm
Lug-to-Lug
48.50mm
50mm
Lug Width
20mm
23mm
Material
Stainless Steel
Titanium
Water Resistance
300m
200m
Crystal & Dial
2 specsAR Coating
Inner
Yes
Lume
BGW9
None
Movement
3 specsCaliber
NH38
9R86
Type
Automatic
Spring Drive
Power Reserve
40h
72h
Pricing
1 specsMSRP
$475
$13,200
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