Which is cheaper, the Borealis Watch Co. Sea Storm MK2 GMT or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

At MSRP the Borealis Watch Co. Sea Storm MK2 GMT is the cheaper of the two at $415, against $2,800 for the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation — a $2,385 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Sea Storm MK2 GMT or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

The Borealis Watch Co. Sea Storm MK2 GMT wears larger at 41.50mm versus 39.5mm for the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation — a 2mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Sea Storm MK2 GMT or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

The Borealis Watch Co. Sea Storm MK2 GMT is rated to 300m versus 200m for the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation.

Which has a longer power reserve, the Borealis Watch Co. Sea Storm MK2 GMT or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

The Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation carries a 45-hour power reserve against 40 hours on the Borealis Watch Co. Sea Storm MK2 GMT.

What movement does the Borealis Watch Co. Sea Storm MK2 GMT run compared to the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

Both watches run automatic movements — the Borealis Watch Co. Sea Storm MK2 GMT uses the NH34 and the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation uses the 6L37.

Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsSeiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

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

Borealis Watch Co.Sea Storm MK2 GMT

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MSRP $415

Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

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MSRP $2,800

At a glance

12 of 29 specs differ

Diameter

Sea Storm MK2 GMT41.50mm

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation39.5mm

Power Reserve

Sea Storm MK2 GMT40h

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation45h

Water Resistance

Sea Storm MK2 GMT300m

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation200m

MSRP

Sea Storm MK2 GMT$415

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation$2,800

Full specifications

Case

5 specs

Diameter

41.50mm

39.5mm

Thickness

14.15mm

12.3mm

Lug-to-Lug

48.50mm

47.2mm

Lug Width

20mm

Water Resistance

300m

200m

Crystal & Dial

3 specs

Crystal Shape

Flat

Box

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

BGW9

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

NH34

6L37

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$415

$2,800

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