Which is cheaper, the Serica Ref. 8315 Travel Chronometer or the Borealis Watch Co. Jamanta?

At MSRP the Borealis Watch Co. Jamanta is the cheaper of the two at $415, against $2,479 for the Serica Ref. 8315 Travel Chronometer — a $2,064 gap before any retailer discounting.

Which is bigger, the Serica Ref. 8315 Travel Chronometer or the Borealis Watch Co. Jamanta?

The Borealis Watch Co. Jamanta wears larger at 42.50mm versus 39mm for the Serica Ref. 8315 Travel Chronometer — a 3.5mm difference across the dial.

Which has better water resistance, the Serica Ref. 8315 Travel Chronometer or the Borealis Watch Co. Jamanta?

The Borealis Watch Co. Jamanta is rated to 300m versus 200m for the Serica Ref. 8315 Travel Chronometer.

Which has a longer power reserve, the Serica Ref. 8315 Travel Chronometer or the Borealis Watch Co. Jamanta?

The Serica Ref. 8315 Travel Chronometer carries a 42-hour power reserve against 40 hours on the Borealis Watch Co. Jamanta.

What movement does the Serica Ref. 8315 Travel Chronometer run compared to the Borealis Watch Co. Jamanta?

Both watches run automatic movements — the Serica Ref. 8315 Travel Chronometer uses the SOPROD C125 COSC and the Borealis Watch Co. Jamanta uses the Miyota 9015.

Side by side

Serica Ref. 8315 Travel ChronometervsBorealis Watch Co. Jamanta

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

Serica Ref. 8315 Travel Chronometer

8315-1-travel-chronometer

MSRP $2,479

Borealis Watch Co.Jamanta

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

MSRP $415

At a glance

13 of 29 specs differ

Diameter

Ref. 8315 Travel Chronometer39mm

Jamanta42.50mm

Power Reserve

Ref. 8315 Travel Chronometer42h

Jamanta40h

Water Resistance

Ref. 8315 Travel Chronometer200m

Jamanta300m

MSRP

Ref. 8315 Travel Chronometer$2,479

Jamanta$415

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

GMT - Enamel Black

Black

Lume

Super-LumiNova

BGW9

Movement

3 specs

Caliber

SOPROD C125 COSC

Miyota 9015

Power Reserve

42h

40h

Complications

GMT, COSC

None

Pricing

1 specs

MSRP

$2,479

$415

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