Which is cheaper, the Borealis Watch Co. Jamanta or the Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition?

At MSRP the Borealis Watch Co. Jamanta is the cheaper of the two at $415, against $4,600 for the Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition — a $4,185 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Jamanta or the Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition?

The Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition wears larger at 45.4mm versus 42.50mm for the Borealis Watch Co. Jamanta — a 2.9mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Jamanta or the Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition?

The Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition is rated to 600m versus 300m for the Borealis Watch Co. Jamanta.

Which has a longer power reserve, the Borealis Watch Co. Jamanta or the Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition?

The Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition carries a 72-hour power reserve against 40 hours on the Borealis Watch Co. Jamanta.

What movement does the Borealis Watch Co. Jamanta run compared to the Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition?

Both watches run automatic movements — the Borealis Watch Co. Jamanta uses the Miyota 9015 and the Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition uses the 8L45.

Side by side

Borealis Watch Co. JamantavsSeiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition

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

Borealis Watch Co.Jamanta

prometheus-jamanta-black-dial-date-miyota-9015

MSRP $415

Seiko Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition

sla081j1

MSRP $4,600

At a glance

13 of 29 specs differ

Diameter

Jamanta42.50mm

Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition45.4mm

Power Reserve

Jamanta40h

Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition72h

Water Resistance

Jamanta300m

Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition600m

MSRP

Jamanta$415

Prospex Marinemaster Seiko Diver’s Watch 60th Anniversary Limited Edition$4,600

Full specifications

Case

6 specs

Diameter

42.50mm

45.4mm

Thickness

13.30mm

16mm

Lug-to-Lug

50.40mm

50.4mm

Lug Width

22mm

Material

Stainless Steel

Titanium

Water Resistance

300m

600m

Crystal & Dial

3 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

BGW9

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Miyota 9015

8L45

Power Reserve

40h

72h

Jewels

Pricing

1 specs

MSRP

$415

$4,600

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