Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsGrand Seiko SBGE277

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
SBGE277
Grand SeikoSBGE277
MSRP $6,800

At a glance

12 of 29 specs differ
Diameter
Sea Storm MK2 GMT41.50mm
SBGE27744mm
Power Reserve
Sea Storm MK2 GMT40h
SBGE27772h
Water Resistance
Sea Storm MK2 GMT300m
SBGE277200m
MSRP
Sea Storm MK2 GMT$415
SBGE277$6,800

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
41.50mm
44mm
Thickness
14.15mm
14.7mm
Lug-to-Lug
48.50mm
50.8mm
Lug Width
20mm
21mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
BGW9
None

Movement

3 specs
Caliber
NH34
9R66
Type
Automatic
Spring Drive
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$415
$6,800

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