Which is cheaper, the Borealis Watch Co. Sea Storm MK2 GMT or the Spinnaker Dumas Automatic?

At MSRP the Spinnaker Dumas Automatic is the cheaper of the two at $239, against $415 for the Borealis Watch Co. Sea Storm MK2 GMT — a $176 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Sea Storm MK2 GMT or the Spinnaker Dumas Automatic?

The Spinnaker Dumas Automatic wears larger at 44mm versus 41.50mm for the Borealis Watch Co. Sea Storm MK2 GMT — a 2.5mm difference across the dial.

What movement does the Borealis Watch Co. Sea Storm MK2 GMT run compared to the Spinnaker Dumas Automatic?

Both watches run automatic movements — the Borealis Watch Co. Sea Storm MK2 GMT uses the NH34 and the Spinnaker Dumas Automatic uses the SII NH35A.

Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsSpinnaker Dumas Automatic

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

Spinnaker Dumas Automatic

dumas-blue-yonder-sp-5081-dd

MSRP $239

At a glance

9 of 29 specs differ

Diameter

Sea Storm MK2 GMT41.50mm

Dumas Automatic44mm

Power Reserve

Sea Storm MK2 GMT40h

Dumas Automatic40h

Water Resistance

Sea Storm MK2 GMT300m

Dumas Automatic300m

MSRP

Sea Storm MK2 GMT$415

Dumas Automatic$239

Full specifications

Case

5 specs

Diameter

41.50mm

44mm

Thickness

14.15mm

15mm

Lug-to-Lug

48.50mm

48mm

Lug Width

20mm

22mm

Material

Stainless Steel

316L Stainless Steel

Crystal & Dial

2 specs

Dial Color

Black

Blue

Lume

BGW9

None

Movement

1 specs

Caliber

NH34

SII NH35A

Pricing

1 specs

MSRP

$415

$239

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