Side by side

Borealis Watch Co. Sea Storm MK2vsSeiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition

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

Sea Storm MK2
Borealis Watch Co.Sea Storm MK2
MSRP $475
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition
SeikoProspex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition
MSRP $3,900

At a glance

11 of 29 specs differ
Diameter
Sea Storm MK241.50mm
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition42.6mm
Power Reserve
Sea Storm MK240h
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition72h
Water Resistance
Sea Storm MK2300m
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition300m
MSRP
Sea Storm MK2$475
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition$3,900

Full specifications

Case

4 specs
Diameter
41.50mm
42.6mm
Thickness
14.15mm
14.1mm
Lug-to-Lug
48.50mm
49.3mm
Lug Width
20mm
20mm

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
NH38
8L45
Power Reserve
40h
72h
Jewels
25
35

Pricing

1 specs
MSRP
$475
$3,900

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