Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsGrand Seiko SBGZ003

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

The bottom line

The 38.5mm SBGZ003 wears 3mm narrower than the 41.50mm Sea Storm MK2 GMT — that's a meaningful jump on most wrists.

Where to get them

Check prices & track

Borealis Watch Co. Sea Storm MK2 GMT
Borealis Watch Co. Sea Storm MK2 GMT
MSRP $415
Visit Borealis Watch Co.Check price on eBayaffiliate
Grand Seiko SBGZ003
Grand Seiko SBGZ003
Visit Grand SeikoCheck price on eBayaffiliate
Sea Storm MK2 GMT
Borealis Watch Co.Sea Storm MK2 GMT
MSRP $415
SBGZ003
Grand SeikoSBGZ003

At a glance

13 of 29 specs differ
Diameter
Sea Storm MK2 GMT41.50mm
SBGZ00338.5mm
Power Reserve
Sea Storm MK2 GMT40h
SBGZ00384h
Water Resistance
Sea Storm MK2 GMT300m
SBGZ00330m
MSRP
Sea Storm MK2 GMT$415
SBGZ003—

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
41.50mm
38.5mm
Thickness
14.15mm
9.8mm
Lug-to-Lug
48.50mm
43.7mm
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
9R02
Type
Automatic
Spring Drive
Power Reserve
40h
84h

Pricing

1 specs
MSRP
$415
—

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