Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsSeestern S450 Ocean Star
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
S450 Ocean Star40mm
Power Reserve
Sea Storm MK2 GMT40h
S450 Ocean Star41h
Water Resistance
Sea Storm MK2 GMT300m
S450 Ocean Star100m
MSRP
Sea Storm MK2 GMT$415
S450 Ocean Star$299
Full specifications
Case
6 specsDiameter
41.50mm
40mm
Thickness
14.15mm
12mm
Lug-to-Lug
48.50mm
48mm
Lug Width
20mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m
Crystal & Dial
2 specsDial Color
Black
White
Lume
BGW9
Tritium
Movement
5 specsCaliber
NH34
TMI NH35A
Beat Rate
28,800 vph
21,600 vph
Power Reserve
40h
41h
Jewels
25
24
Complications
None
GMT, Date
Pricing
1 specsMSRP
$415
$299
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