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

At MSRP the Serica Ref. 8315 Travel Chronometer is the cheaper of the two at $2,479, against $2,900 for the Sartory Billard SB04 — a $421 gap before any retailer discounting.

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

The Sartory Billard SB04 wears larger at 40mm versus 39mm for the Serica Ref. 8315 Travel Chronometer — a 1mm difference across the dial.

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

The Serica Ref. 8315 Travel Chronometer is rated to 200m versus 30m for the Sartory Billard SB04.

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

The Serica Ref. 8315 Travel Chronometer carries a 42-hour power reserve against 40 hours on the Sartory Billard SB04.

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

Both watches run automatic movements — the Serica Ref. 8315 Travel Chronometer uses the SOPROD C125 COSC and the Sartory Billard SB04 uses the LJP G100.

Side by side

Serica Ref. 8315 Travel ChronometervsSartory Billard SB04

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

MSRP $2,900

At a glance

11 of 29 specs differ

Diameter

Ref. 8315 Travel Chronometer39mm

SB0440mm

Power Reserve

Ref. 8315 Travel Chronometer42h

SB0440h

Water Resistance

Ref. 8315 Travel Chronometer200m

SB0430m

MSRP

Ref. 8315 Travel Chronometer$2,479

SB04$2,900

Full specifications

Case

5 specs

Crystal & Dial

2 specs

Dial Color

GMT - Enamel Black

Black

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

SOPROD C125 COSC

LJP G100

Power Reserve

42h

40h

Complications

GMT, COSC

None

Pricing

1 specs

MSRP

$2,479

$2,900

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