Side by side
Borealis Watch Co. Sea Storm MK2vsSeestern 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 MK241.50mm
S450 Ocean Star40mm
Power Reserve
Sea Storm MK240h
S450 Ocean Star41h
Water Resistance
Sea Storm MK2300m
S450 Ocean Star100m
MSRP
Sea Storm MK2$475
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
NH38
TMI NH35A
Beat Rate
28,800 vph
21,600 vph
Power Reserve
40h
41h
Jewels
25
24
Complications
None
GMT, Date
Pricing
1 specsMSRP
$475
$299
Follow this matchup
Get a note when Borealis Watch Co. Sea Storm MK2 vs Seestern S450 Ocean Star gets more votes, a community discussion, or a price drop. No account needed.
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Borealis Watch Co. Sea Storm MK2 GMTvsSeestern S450 Ocean StarBorealis Watch Co. NeptunovsSeestern S450 Ocean StarChristopher Ward C60 LympstonevsSeestern S450 Ocean StarGeckota PhalanxvsSeestern S450 Ocean StarBorealis Watch Co. Sea Storm MK2vsTraska Freediver ArcticBorealis Watch Co. Sea Storm MK2vsChristopher Ward C60 Atoll 300