Which is cheaper, the Borealis Watch Co. Jamanta or the Seiko Presage Sharp Edged Series?

At MSRP the Borealis Watch Co. Jamanta is the cheaper of the two at $415, against $1,100 for the Seiko Presage Sharp Edged Series — a $685 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Jamanta or the Seiko Presage Sharp Edged Series?

The Borealis Watch Co. Jamanta wears larger at 42.50mm versus 40.2mm for the Seiko Presage Sharp Edged Series — a 2.3mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Jamanta or the Seiko Presage Sharp Edged Series?

The Borealis Watch Co. Jamanta is rated to 300m versus 10m for the Seiko Presage Sharp Edged Series.

Which has a longer power reserve, the Borealis Watch Co. Jamanta or the Seiko Presage Sharp Edged Series?

The Seiko Presage Sharp Edged Series carries a 45-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 Presage Sharp Edged Series?

Both watches run automatic movements — the Borealis Watch Co. Jamanta uses the Miyota 9015 and the Seiko Presage Sharp Edged Series uses the 6R21.

Side by side

Borealis Watch Co. JamantavsSeiko Presage Sharp Edged Series

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 Presage Sharp Edged Series

spb307j1

MSRP $1,100

At a glance

12 of 29 specs differ

Diameter

Jamanta42.50mm

Presage Sharp Edged Series40.2mm

Power Reserve

Jamanta40h

Presage Sharp Edged Series45h

Water Resistance

Jamanta300m

Presage Sharp Edged Series100m

MSRP

Jamanta$415

Presage Sharp Edged Series$1,100

Full specifications

Case

6 specs

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

Miyota 9015

6R21

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$415

$1,100

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