Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsGrand Seiko SBGR321

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
SBGR321
Grand SeikoSBGR321
MSRP $5,200

At a glance

11 of 29 specs differ
Diameter
Sea Storm MK2 GMT41.50mm
SBGR32140mm
Power Reserve
Sea Storm MK2 GMT40h
SBGR32172h
Water Resistance
Sea Storm MK2 GMT300m
SBGR321100m
MSRP
Sea Storm MK2 GMT$415
SBGR321$5,200

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
41.50mm
40mm
Thickness
14.15mm
13mm
Lug-to-Lug
48.50mm
46.6mm
Lug Width
20mm
20mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
BGW9
None

Movement

2 specs
Caliber
NH34
9S65
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$415
$5,200

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