Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsSeiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Sea Storm MK2 GMT
Borealis Watch Co.Sea Storm MK2 GMT
MSRP $415
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition
SeikoProspex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition
MSRP $4,600

At a glance

13 of 29 specs differ
Diameter
Sea Storm MK2 GMT41.50mm
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition45.4mm
Power Reserve
Sea Storm MK2 GMT40h
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition72h
Water Resistance
Sea Storm MK2 GMT300m
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition600m
MSRP
Sea Storm MK2 GMT$415
Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition$4,600

Full specifications

Case

6 specs
Diameter
41.50mm
45.4mm
Thickness
14.15mm
16mm
Lug-to-Lug
48.50mm
50.4mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
300m
600m

Crystal & Dial

3 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
NH34
8L45
Power Reserve
40h
72h
Jewels
25
35

Pricing

1 specs
MSRP
$415
$4,600

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