Side by side
Borealis Watch Co. Sea Storm MK2vsTudor Black Bay 58 18K
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
20 of 29 specs differDiameter
Sea Storm MK241.50mm
Black Bay 58 18K39mm
Power Reserve
Sea Storm MK240h
Black Bay 58 18K70h
Water Resistance
Sea Storm MK2300m
Black Bay 58 18K200m
MSRP
Sea Storm MK2$475
Black Bay 58 18K$22,550
Full specifications
Case
8 specsDiameter
41.50mm
39mm
Thickness
14.15mm
12.7mm
Lug-to-Lug
48.50mm
46mm
Lug Width
20mm
20mm
Material
Stainless Steel
18k Yellow Gold
Finish
Brushed and polished
Satin
Water Resistance
300m
200m
Caseback
Solid
Solid screw-down
Crystal & Dial
5 specsCrystal Shape
Flat
—
AR Coating
Inner
—
Dial Color
Black
Green
Indices
Applied
—
Lume
BGW9
None
Movement
6 specsCaliber
NH38
MT5400
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Pricing
1 specsMSRP
$475
$22,550
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