Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsSeestern S446 GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
16 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
S446 GMT39.5mm
Power Reserve
Sea Storm MK2 GMT40h
S446 GMT41hh
Water Resistance
Sea Storm MK2 GMT300m
S446 GMT100m
MSRP
Sea Storm MK2 GMT$415
S446 GMT$299
Full specifications
Case
7 specsCategory
Diver
GMT
Diameter
41.50mm
39.5mm
Thickness
14.15mm
13mm
Lug-to-Lug
48.50mm
47mm
Lug Width
20mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m
Crystal & Dial
3 specsCrystal Shape
Flat
Domed
Dial Color
Black
Cream
Lume
BGW9
None
Movement
5 specsCaliber
NH34
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
41hh
Jewels
25
24
Complications
None
GMT, Date
Pricing
1 specsMSRP
$415
$299
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