Which is cheaper, the Borealis Watch Co. Jamanta or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

At MSRP the Borealis Watch Co. Jamanta is the cheaper of the two at $415, against $2,500 for the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition — a $2,085 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Jamanta or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

The Borealis Watch Co. Jamanta wears larger at 42.50mm versus 42mm for the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition — a 0.5mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Jamanta or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

The Borealis Watch Co. Jamanta is rated to 300m versus 10m for the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition.

Which has a longer power reserve, the Borealis Watch Co. Jamanta or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

The Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition 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 Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

Both watches run automatic movements — the Borealis Watch Co. Jamanta uses the Miyota 9015 and the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition uses the 8R48.

Side by side

Borealis Watch Co. JamantavsSeiko Prospex SPEEDTIMER Seiko 145th 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 SPEEDTIMER Seiko 145th Anniversary Limited Edition

srq059j1

MSRP $2,500

At a glance

13 of 29 specs differ

Diameter

Jamanta42.50mm

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm

Power Reserve

Jamanta40h

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h

Water Resistance

Jamanta300m

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m

MSRP

Jamanta$415

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

BGW9

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Miyota 9015

8R48

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$415

$2,500

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