Which is cheaper, the Serica Ref. 5330 Diving Chronometer Date or the Formex Reef GMT?

At MSRP the Serica Ref. 5330 Diving Chronometer Date is the cheaper of the two at $2,005, against $2,235 for the Formex Reef GMT — a $230 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5330 Diving Chronometer Date or the Formex Reef GMT?

The Formex Reef GMT wears larger at 42mm versus 39mm for the Serica Ref. 5330 Diving Chronometer Date — a 3mm difference across the dial.

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

The Formex Reef GMT carries a 56-hour power reserve against 42 hours on the Serica Ref. 5330 Diving Chronometer Date.

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

Both watches run automatic movements — the Serica Ref. 5330 Diving Chronometer Date uses the SoProd M100 and the Formex Reef GMT uses the Sellita SW330-2.

Side by side

Serica Ref. 5330 Diving Chronometer DatevsFormex Reef 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

Formex Reef GMT

reef-gmt-42mm-automatic-cosc-300m-black-blue

MSRP $2,235

At a glance

10 of 29 specs differ

Diameter

Ref. 5330 Diving Chronometer Date39mm

Reef GMT42mm

Power Reserve

Ref. 5330 Diving Chronometer Date42h

Reef GMT56h

Water Resistance

Ref. 5330 Diving Chronometer Date300m

Reef GMT300m

MSRP

Ref. 5330 Diving Chronometer Date$2,005

Reef GMT$2,235

Full specifications

Case

5 specs

Crystal & Dial

1 specs

AR Coating

Yes

Inner

Movement

3 specs

Caliber

SoProd M100

Sellita SW330-2

Power Reserve

42h

56h

Complications

COSC, Date

None

Pricing

1 specs

MSRP

$2,005

$2,235

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