Which is cheaper, the Borealis Watch Co. Jamanta or the Sartory Billard SB04-E?

At MSRP the Borealis Watch Co. Jamanta is the cheaper of the two at $415, against $3,100 for the Sartory Billard SB04-E — a $2,685 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Jamanta or the Sartory Billard SB04-E?

The Borealis Watch Co. Jamanta wears larger at 42.50mm versus 39.5mm for the Sartory Billard SB04-E — a 3mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Jamanta or the Sartory Billard SB04-E?

The Borealis Watch Co. Jamanta is rated to 300m versus 100m for the Sartory Billard SB04-E.

Which has a longer power reserve, the Borealis Watch Co. Jamanta or the Sartory Billard SB04-E?

The Sartory Billard SB04-E carries a 68-hour power reserve against 40 hours on the Borealis Watch Co. Jamanta.

What movement does the Borealis Watch Co. Jamanta run compared to the Sartory Billard SB04-E?

Both watches run automatic movements — the Borealis Watch Co. Jamanta uses the Miyota 9015 and the Sartory Billard SB04-E uses the LJP G101ET.

Side by side

Borealis Watch Co. JamantavsSartory Billard SB04-E

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

Sartory Billard SB04-E

MSRP $3,100

At a glance

12 of 29 specs differ

Diameter

Jamanta42.50mm

SB04-E39.5mm

Power Reserve

Jamanta40h

SB04-E68h

Water Resistance

Jamanta300m

SB04-E100m

MSRP

Jamanta$415

SB04-E$3,100

Full specifications

Case

6 specs

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Lume

BGW9

Super-LumiNova BGW9

Movement

3 specs

Caliber

Miyota 9015

LJP G101ET

Power Reserve

40h

68h

Jewels

Pricing

1 specs

MSRP

$415

$3,100

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