Which is cheaper, the Serica Ref. 5330 Diving Chronometer Date or the Spinnaker Cahill Automatic?

At MSRP the Spinnaker Cahill Automatic is the cheaper of the two at $350, against $2,005 for the Serica Ref. 5330 Diving Chronometer Date — a $1,655 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5330 Diving Chronometer Date or the Spinnaker Cahill Automatic?

The Spinnaker Cahill Automatic wears larger at 42mm versus 39mm for the Serica Ref. 5330 Diving Chronometer Date — a 3mm difference across the dial.

Which has better water resistance, the Serica Ref. 5330 Diving Chronometer Date or the Spinnaker Cahill Automatic?

The Serica Ref. 5330 Diving Chronometer Date is rated to 300m versus 200m for the Spinnaker Cahill Automatic.

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

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

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

Both watches run automatic movements — the Serica Ref. 5330 Diving Chronometer Date uses the SoProd M100 and the Spinnaker Cahill Automatic uses the SII NH35A.

Side by side

Serica Ref. 5330 Diving Chronometer DatevsSpinnaker Cahill Automatic

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 Cahill Automatic

cahill-automatic-moss-green-sp-5064-02

MSRP $350

At a glance

13 of 29 specs differ

Diameter

Ref. 5330 Diving Chronometer Date39mm

Cahill Automatic42mm

Power Reserve

Ref. 5330 Diving Chronometer Date42h

Cahill Automatic40h

Water Resistance

Ref. 5330 Diving Chronometer Date300m

Cahill Automatic200m

MSRP

Ref. 5330 Diving Chronometer Date$2,005

Cahill Automatic$350

Full specifications

Case

6 specs

Diameter

39mm

42mm

Thickness

12.2mm

13.7mm

Lug-to-Lug

46.5mm

51mm

Lug Width

20mm

22mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

300m

200m

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Black

Green

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

SoProd M100

SII NH35A

Power Reserve

42h

40h

Complications

COSC, Date

None

Pricing

1 specs

MSRP

$2,005

$350

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