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

At MSRP the Spinnaker Bradner GMT is the cheaper of the two at $299, against $2,005 for the Serica Ref. 5330 Diving Chronometer Date — a $1,706 gap before any retailer discounting.

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

The Spinnaker Bradner GMT 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 Bradner GMT?

The Serica Ref. 5330 Diving Chronometer Date is rated to 300m versus 180m for the Spinnaker Bradner GMT.

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

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

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

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

Side by side

Serica Ref. 5330 Diving Chronometer DatevsSpinnaker Bradner 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 Bradner GMT

bradner-gmt-automatic-abbott-brown-sp-5121-22

MSRP $299

At a glance

14 of 29 specs differ

Diameter

Ref. 5330 Diving Chronometer Date39mm

Bradner GMT42mm

Power Reserve

Ref. 5330 Diving Chronometer Date42h

Bradner GMT40h

Water Resistance

Ref. 5330 Diving Chronometer Date300m

Bradner GMT180m

MSRP

Ref. 5330 Diving Chronometer Date$2,005

Bradner GMT$299

Full specifications

Case

7 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Black

Brown

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

$299

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