Which is cheaper, the Serica Ref. 5330 Diving Chronometer Date or the Spinnaker Dumas GMT?

At MSRP the Spinnaker Dumas GMT is the cheaper of the two at $399, against $2,005 for the Serica Ref. 5330 Diving Chronometer Date — a $1,606 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5330 Diving Chronometer Date or the Spinnaker Dumas GMT?

The Spinnaker Dumas GMT wears larger at 44mm versus 39mm for the Serica Ref. 5330 Diving Chronometer Date — a 5mm difference across the dial.

Which has a longer power reserve, the Serica Ref. 5330 Diving Chronometer Date or the Spinnaker Dumas GMT?

The Serica Ref. 5330 Diving Chronometer Date carries a 42-hour power reserve against 40 hours on the Spinnaker Dumas GMT.

What movement does the Serica Ref. 5330 Diving Chronometer Date run compared to the Spinnaker Dumas GMT?

Both watches run automatic movements — the Serica Ref. 5330 Diving Chronometer Date uses the SoProd M100 and the Spinnaker Dumas GMT uses the Seiko NH34A.

Side by side

Serica Ref. 5330 Diving Chronometer DatevsSpinnaker Dumas GMT

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

Serica Ref. 5330 Diving Chronometer Date

5330-chronometre-plongee-date

MSRP $2,005

Spinnaker Dumas GMT

dumas-gmt-automatic-ocean-blue-sp-5119-55

MSRP $399

At a glance

13 of 29 specs differ

Diameter

Ref. 5330 Diving Chronometer Date39mm

Dumas GMT44mm

Power Reserve

Ref. 5330 Diving Chronometer Date42h

Dumas GMT40h

Water Resistance

Ref. 5330 Diving Chronometer Date300m

Dumas GMT300m

MSRP

Ref. 5330 Diving Chronometer Date$2,005

Dumas GMT$399

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Black

Blue

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

SoProd M100

Seiko NH34A

Power Reserve

42h

40h

Complications

COSC, Date

None

Pricing

1 specs

MSRP

$2,005

$399

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