Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsGrand Seiko SBGW257

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
SBGW257
Grand SeikoSBGW257
MSRP $38,000

At a glance

13 of 29 specs differ
Diameter
Sea Storm MK2 GMT41.50mm
SBGW25738mm
Power Reserve
Sea Storm MK2 GMT40h
SBGW25772h
Water Resistance
Sea Storm MK2 GMT300m
SBGW25730m
MSRP
Sea Storm MK2 GMT$415
SBGW257$38,000

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
41.50mm
38mm
Thickness
14.15mm
10.9mm
Lug-to-Lug
48.50mm
45.8mm
Lug Width
20mm
19mm
Material
Stainless Steel
Platinum
Water Resistance
300m
30m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
BGW9
None

Movement

3 specs
Caliber
NH34
9S64
Type
Automatic
Manual
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$415
$38,000

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