Which is cheaper, the Serica Ref. 8315 Travel Chronometer or the Helgray Poseidon Diver (Automatic)?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $2,479 for the Serica Ref. 8315 Travel Chronometer — a $2,230 gap before any retailer discounting.

Which is bigger, the Serica Ref. 8315 Travel Chronometer or the Helgray Poseidon Diver (Automatic)?

The Helgray Poseidon Diver (Automatic) 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 Helgray Poseidon Diver (Automatic)?

The Helgray Poseidon Diver (Automatic) 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 Helgray Poseidon Diver (Automatic)?

The Serica Ref. 8315 Travel Chronometer carries a 42-hour power reserve against 40 hours on the Helgray Poseidon Diver (Automatic).

What movement does the Serica Ref. 8315 Travel Chronometer run compared to the Helgray Poseidon Diver (Automatic)?

Both watches run automatic movements — the Serica Ref. 8315 Travel Chronometer uses the SOPROD C125 COSC and the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty.

Side by side

Serica Ref. 8315 Travel ChronometervsHelgray Poseidon Diver (Automatic)

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

Helgray Poseidon Diver (Automatic)

poseidon-diver-automatic

MSRP $249

At a glance

12 of 29 specs differ

Diameter

Ref. 8315 Travel Chronometer39mm

Poseidon Diver (Automatic)40mm

Power Reserve

Ref. 8315 Travel Chronometer42h

Poseidon Diver (Automatic)40h

Water Resistance

Ref. 8315 Travel Chronometer200m

Poseidon Diver (Automatic)300m

MSRP

Ref. 8315 Travel Chronometer$2,479

Poseidon Diver (Automatic)$249

Full specifications

Case

5 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

GMT - Enamel Black

Black

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

SOPROD C125 COSC

NH35 Warranty

Power Reserve

42h

40h

Complications

GMT, COSC

None

Pricing

1 specs

MSRP

$2,479

$249

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