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

At MSRP the Spinnaker Yellow Sponge is the cheaper of the two at $395, against $415 for the Borealis Watch Co. Sea Storm MK2 GMT — a $20 gap before any retailer discounting.

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

The Spinnaker Yellow Sponge wears larger at 43mm versus 41.50mm for the Borealis Watch Co. Sea Storm MK2 GMT — a 1.5mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Sea Storm MK2 GMT or the Spinnaker Yellow Sponge?

The Borealis Watch Co. Sea Storm MK2 GMT is rated to 300m versus 150m for the Spinnaker Yellow Sponge.

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

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

Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsSpinnaker Yellow Sponge

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 Yellow Sponge

fleuss-automatic-spongebob-squarepants-conch-street-limited-edition-yellow-sponge-sp-5151-03

MSRP $395

At a glance

10 of 29 specs differ

Diameter

Sea Storm MK2 GMT41.50mm

Yellow Sponge43mm

Power Reserve

Sea Storm MK2 GMT40h

Yellow Sponge40h

Water Resistance

Sea Storm MK2 GMT300m

Yellow Sponge150m

MSRP

Sea Storm MK2 GMT$415

Yellow Sponge$395

Full specifications

Case

6 specs

Diameter

41.50mm

43mm

Thickness

14.15mm

13mm

Lug-to-Lug

48.50mm

51mm

Lug Width

20mm

22mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

300m

150m

Crystal & Dial

2 specs

Dial Color

Black

Yellow Sponge

Lume

BGW9

None

Movement

1 specs

Caliber

NH34

SII NH35A

Pricing

1 specs

MSRP

$415

$395

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