Side by side
Borealis Watch Co. Sea Storm MK2vsTudor Black Bay GMT
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 GMT41mm
Power Reserve
Sea Storm MK240h
Black Bay GMT70h
Water Resistance
Sea Storm MK2300m
Black Bay GMT200m
MSRP
Sea Storm MK2$475
Black Bay GMT$5,275
Full specifications
Case
8 specsCategory
Diver
GMT
Diameter
41.50mm
41mm
Thickness
14.15mm
14.6mm
Lug-to-Lug
48.50mm
46mm
Lug Width
20mm
22mm
Finish
Brushed and polished
Polished + Satin
Water Resistance
300m
200m
Caseback
Solid
Solid screw-down
Crystal & Dial
4 specsCrystal Shape
Flat
—
AR Coating
Inner
—
Indices
Applied
—
Lume
BGW9
None
Movement
7 specsCaliber
NH38
MT5652
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
GMT
Pricing
1 specsMSRP
$475
$5,275
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