Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsGrand Seiko SBGH289

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
SBGH289
Grand SeikoSBGH289
MSRP $7,700

At a glance

10 of 29 specs differ
Diameter
Sea Storm MK2 GMT41.50mm
SBGH28943.8mm
Power Reserve
Sea Storm MK2 GMT40h
SBGH28955h
Water Resistance
Sea Storm MK2 GMT300m
SBGH289200m
MSRP
Sea Storm MK2 GMT$415
SBGH289$7,700

Full specifications

Case

5 specs
Diameter
41.50mm
43.8mm
Thickness
14.15mm
14.7mm
Lug-to-Lug
48.50mm
51mm
Lug Width
20mm
22mm
Water Resistance
300m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Lume
BGW9
None

Movement

2 specs
Caliber
NH34
9S85
Power Reserve
40h
55h

Pricing

1 specs
MSRP
$415
$7,700

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