Side by side
Borealis Watch Co. Sea Storm MK2 GMTvsSeiko Prospex Sea 1968 Heritage Diver's GMT
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
11 of 29 specs differDiameter
Sea Storm MK2 GMT41.50mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
Sea Storm MK2 GMT40h
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
Sea Storm MK2 GMT300m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
Sea Storm MK2 GMT$415
Prospex Sea 1968 Heritage Diver's GMT$1,500
Full specifications
Case
5 specsDiameter
41.50mm
42mm
Thickness
14.15mm
12.9mm
Lug-to-Lug
48.50mm
48.6mm
Lug Width
20mm
20mm
Water Resistance
300m
200m
Crystal & Dial
2 specsAR Coating
Inner
Anti-reflective coating on inner surface
Lume
BGW9
LumiBrite on hands, index(es) and bezel
Movement
3 specsCaliber
NH34
6R54
Power Reserve
40h
72h
Jewels
25
24
Pricing
1 specsMSRP
$415
$1,500
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