Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsSeiko Prospex LX line
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
12 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
Prospex LX line44.8mm
Power Reserve
Sea Storm MK2 GMT40h
Prospex LX line72h
Water Resistance
Sea Storm MK2 GMT300m
Prospex LX line300m
MSRP
Sea Storm MK2 GMT$415
Prospex LX line$6,500
Full specifications
Case
5 specsDiameter
41.50mm
44.8mm
Thickness
14.15mm
15.7mm
Lug-to-Lug
48.50mm
50.9mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Crystal & Dial
2 specsAR Coating
Inner
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands and index(es)
Movement
4 specsCaliber
NH34
5R65
Type
Automatic
Spring Drive
Power Reserve
40h
72h
Jewels
25
30
Pricing
1 specsMSRP
$415
$6,500
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