Side by side
Borealis Watch Co. Sea Storm MK2vsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Sea Storm MK241.50mm
Prospex Sea41.3mm
Power Reserve
Sea Storm MK240h
Prospex Sea72h
Water Resistance
Sea Storm MK2300m
Prospex Sea300m
MSRP
Sea Storm MK2$475
Prospex Sea$1,100
Full specifications
Case
4 specsDiameter
41.50mm
41.3mm
Thickness
14.15mm
12.5mm
Lug-to-Lug
48.50mm
48.2mm
Lug Width
20mm
20mm
Crystal & Dial
2 specsAR Coating
Inner
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
NH38
6R55
Power Reserve
40h
72h
Jewels
25
24
Pricing
1 specsMSRP
$475
$1,100
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