Which is cheaper, the Borealis Watch Co. Sea Storm MK2 GMT or the Seiko King Turtle?

At MSRP the Borealis Watch Co. Sea Storm MK2 GMT is the cheaper of the two at $415, against $650 for the Seiko King Turtle — a $235 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Sea Storm MK2 GMT or the Seiko King Turtle?

The Seiko King Turtle wears larger at 45mm versus 41.50mm for the Borealis Watch Co. Sea Storm MK2 GMT — a 3.5mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Sea Storm MK2 GMT or the Seiko King Turtle?

The Borealis Watch Co. Sea Storm MK2 GMT is rated to 300m versus 200m for the Seiko King Turtle.

Which has a longer power reserve, the Borealis Watch Co. Sea Storm MK2 GMT or the Seiko King Turtle?

The Seiko King Turtle carries a 41-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 King Turtle?

Both watches run automatic movements — the Borealis Watch Co. Sea Storm MK2 GMT uses the NH34 and the Seiko King Turtle uses the 4R36.

Side by side

Borealis Watch Co. Sea Storm MK2 GMTvsSeiko King Turtle

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

Seiko King Turtle

srpe03

MSRP $650

At a glance

11 of 29 specs differ

Diameter

Sea Storm MK2 GMT41.50mm

King Turtle45mm

Power Reserve

Sea Storm MK2 GMT40h

King Turtle41h

Water Resistance

Sea Storm MK2 GMT300m

King Turtle200m

MSRP

Sea Storm MK2 GMT$415

King Turtle$650

Full specifications

Case

5 specs

Diameter

41.50mm

45mm

Thickness

14.15mm

13.2mm

Lug-to-Lug

48.50mm

47.7mm

Lug Width

20mm

22mm

Water Resistance

300m

200m

Crystal & Dial

2 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

BGW9

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

NH34

4R36

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$415

$650

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