Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsZero West S4 Blackout P9427 Spitfire
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
10 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
S4 Blackout P9427 Spitfire44mm
Power Reserve
Sea Storm MK2 GMT40h
S4 Blackout P9427 Spitfire38h
Water Resistance
Sea Storm MK2 GMT300m
S4 Blackout P9427 Spitfire100m
MSRP
Sea Storm MK2 GMT$415
S4 Blackout P9427 Spitfire—
Full specifications
Case
6 specsCategory
Diver
—
Diameter
41.50mm
44mm
Thickness
14.15mm
14.1mm
Lug-to-Lug
48.50mm
49.6mm
Lug Width
20mm
22mm
Water Resistance
300m
100m
Crystal & Dial
1 specsLume
BGW9
None
Movement
2 specsCaliber
NH34
ETA 2824
Power Reserve
40h
38h
Pricing
1 specsMSRP
$415
—
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