Which is cheaper, the Borealis Watch Co. Sea Storm MK2 GMT or the Grand Seiko SBGP015?

At MSRP the Borealis Watch Co. Sea Storm MK2 GMT is the cheaper of the two at $415, against $3,800 for the Grand Seiko SBGP015 — a $3,385 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Sea Storm MK2 GMT or the Grand Seiko SBGP015?

The Borealis Watch Co. Sea Storm MK2 GMT wears larger at 41.50mm versus 40mm for the Grand Seiko SBGP015 — a 1.5mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Sea Storm MK2 GMT or the Grand Seiko SBGP015?

The Borealis Watch Co. Sea Storm MK2 GMT is rated to 300m versus 200m for the Grand Seiko SBGP015.

What movement does the Borealis Watch Co. Sea Storm MK2 GMT run compared to the Grand Seiko SBGP015?

The Borealis Watch Co. Sea Storm MK2 GMT runs a automatic caliber (NH34), while the Grand Seiko SBGP015 runs a quartz (9F85).

Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsGrand Seiko SBGP015

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

Borealis Watch Co.Sea Storm MK2 GMT

borealis-sea-storm-mk2-gmt-version-aa

MSRP $415

Grand Seiko SBGP015

sbgp015g

MSRP $3,800

At a glance

10 of 29 specs differ

Diameter

Sea Storm MK2 GMT41.50mm

SBGP01540mm

Power Reserve

Sea Storm MK2 GMT40h

SBGP01540h

Water Resistance

Sea Storm MK2 GMT300m

SBGP015200m

MSRP

Sea Storm MK2 GMT$415

SBGP015$3,800

Full specifications

Case

5 specs

Diameter

41.50mm

40mm

Thickness

14.15mm

12.4mm

Lug-to-Lug

48.50mm

47.1mm

Lug Width

20mm

Water Resistance

300m

200m

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Lume

BGW9

None

Movement

2 specs

Caliber

NH34

9F85

Type

Automatic

Quartz

Pricing

1 specs

MSRP

$415

$3,800

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