Which is cheaper, the Borealis Watch Co. Sea Storm MK2 GMT or the Helgray Poseidon Diver (Automatic)?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $415 for the Borealis Watch Co. Sea Storm MK2 GMT — a $166 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Sea Storm MK2 GMT or the Helgray Poseidon Diver (Automatic)?

The Borealis Watch Co. Sea Storm MK2 GMT wears larger at 41.50mm versus 40mm for the Helgray Poseidon Diver (Automatic) — a 1.5mm difference across the dial.

What movement does the Borealis Watch Co. Sea Storm MK2 GMT run compared to the Helgray Poseidon Diver (Automatic)?

Both watches run automatic movements — the Borealis Watch Co. Sea Storm MK2 GMT uses the NH34 and the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty.

Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsHelgray Poseidon Diver (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

Helgray Poseidon Diver (Automatic)

poseidon-diver-automatic

MSRP $249

At a glance

7 of 29 specs differ

Diameter

Sea Storm MK2 GMT41.50mm

Poseidon Diver (Automatic)40mm

Power Reserve

Sea Storm MK2 GMT40h

Poseidon Diver (Automatic)40h

Water Resistance

Sea Storm MK2 GMT300m

Poseidon Diver (Automatic)300m

MSRP

Sea Storm MK2 GMT$415

Poseidon Diver (Automatic)$249

Full specifications

Case

4 specs

Diameter

41.50mm

40mm

Thickness

14.15mm

12mm

Lug-to-Lug

48.50mm

46mm

Lug Width

20mm

Crystal & Dial

1 specs

Lume

BGW9

None

Movement

1 specs

Caliber

NH34

NH35 Warranty

Pricing

1 specs

MSRP

$415

$249

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