Which is cheaper, the Serica Ref. 8315 Travel Chronometer or the Sartory Billard SB04-E?

At MSRP the Serica Ref. 8315 Travel Chronometer is the cheaper of the two at $2,479, against $3,100 for the Sartory Billard SB04-E — a $621 gap before any retailer discounting.

Which is bigger, the Serica Ref. 8315 Travel Chronometer or the Sartory Billard SB04-E?

The Sartory Billard SB04-E wears larger at 39.5mm versus 39mm for the Serica Ref. 8315 Travel Chronometer — a 0.5mm difference across the dial.

Which has better water resistance, the Serica Ref. 8315 Travel Chronometer or the Sartory Billard SB04-E?

The Serica Ref. 8315 Travel Chronometer is rated to 200m versus 100m for the Sartory Billard SB04-E.

Which has a longer power reserve, the Serica Ref. 8315 Travel Chronometer or the Sartory Billard SB04-E?

The Sartory Billard SB04-E carries a 68-hour power reserve against 42 hours on the Serica Ref. 8315 Travel Chronometer.

What movement does the Serica Ref. 8315 Travel Chronometer run compared to the Sartory Billard SB04-E?

Both watches run automatic movements — the Serica Ref. 8315 Travel Chronometer uses the SOPROD C125 COSC and the Sartory Billard SB04-E uses the LJP G101ET.

Side by side

Serica Ref. 8315 Travel ChronometervsSartory Billard SB04-E

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

Sartory Billard SB04-E

MSRP $3,100

At a glance

12 of 29 specs differ

Diameter

Ref. 8315 Travel Chronometer39mm

SB04-E39.5mm

Power Reserve

Ref. 8315 Travel Chronometer42h

SB04-E68h

Water Resistance

Ref. 8315 Travel Chronometer200m

SB04-E100m

MSRP

Ref. 8315 Travel Chronometer$2,479

SB04-E$3,100

Full specifications

Case

5 specs

Crystal & Dial

2 specs

Dial Color

GMT - Enamel Black

Black

Lume

Super-LumiNova

Super-LumiNova BGW9

Movement

4 specs

Caliber

SOPROD C125 COSC

LJP G101ET

Power Reserve

42h

68h

Jewels

Complications

GMT, COSC

None

Pricing

1 specs

MSRP

$2,479

$3,100

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