Which is cheaper, the Hamilton Jazzmaster Slim Auto or the Borealis Watch Co. Jamanta?

At MSRP the Borealis Watch Co. Jamanta is the cheaper of the two at $415, against $825 for the Hamilton Jazzmaster Slim Auto — a $410 gap before any retailer discounting.

Which is bigger, the Hamilton Jazzmaster Slim Auto or the Borealis Watch Co. Jamanta?

The Borealis Watch Co. Jamanta wears larger at 42.50mm versus 40mm for the Hamilton Jazzmaster Slim Auto — a 2.5mm difference across the dial.

Which has better water resistance, the Hamilton Jazzmaster Slim Auto or the Borealis Watch Co. Jamanta?

The Borealis Watch Co. Jamanta is rated to 300m versus 30m for the Hamilton Jazzmaster Slim Auto.

Which has a longer power reserve, the Hamilton Jazzmaster Slim Auto or the Borealis Watch Co. Jamanta?

The Hamilton Jazzmaster Slim Auto carries a 50-hour power reserve against 40 hours on the Borealis Watch Co. Jamanta.

What movement does the Hamilton Jazzmaster Slim Auto run compared to the Borealis Watch Co. Jamanta?

Both watches run automatic movements — the Hamilton Jazzmaster Slim Auto uses the No caliber and the Borealis Watch Co. Jamanta uses the Miyota 9015.

Side by side

Hamilton Jazzmaster Slim AutovsBorealis Watch Co. Jamanta

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

Hamilton Jazzmaster Slim Auto

h38515735

MSRP $825

Borealis Watch Co.Jamanta

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

MSRP $415

At a glance

10 of 29 specs differ

Diameter

Jazzmaster Slim Auto40mm

Jamanta42.50mm

Power Reserve

Jazzmaster Slim Auto50h

Jamanta40h

Water Resistance

Jazzmaster Slim Auto30m

Jamanta300m

MSRP

Jazzmaster Slim Auto$825

Jamanta$415

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Lume

None

BGW9

Movement

2 specs

Caliber

No caliber

Miyota 9015

Power Reserve

50h

40h

Pricing

1 specs

MSRP

$825

$415

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