Which is cheaper, the Serica Ref. 5330 Diving Chronometer Date or the Alexander James Watches A3 Omen II?

At MSRP the Alexander James Watches A3 Omen II is the cheaper of the two at $650, against $2,005 for the Serica Ref. 5330 Diving Chronometer Date — a $1,355 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5330 Diving Chronometer Date or the Alexander James Watches A3 Omen II?

The Serica Ref. 5330 Diving Chronometer Date wears larger at 39mm versus 38mm for the Alexander James Watches A3 Omen II — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5330 Diving Chronometer Date or the Alexander James Watches A3 Omen II?

The Serica Ref. 5330 Diving Chronometer Date is rated to 300m versus 100m for the Alexander James Watches A3 Omen II.

Which has a longer power reserve, the Serica Ref. 5330 Diving Chronometer Date or the Alexander James Watches A3 Omen II?

The Serica Ref. 5330 Diving Chronometer Date carries a 42-hour power reserve against 40 hours on the Alexander James Watches A3 Omen II.

What movement does the Serica Ref. 5330 Diving Chronometer Date run compared to the Alexander James Watches A3 Omen II?

Both watches run automatic movements — the Serica Ref. 5330 Diving Chronometer Date uses the SoProd M100 and the Alexander James Watches A3 Omen II uses the Miyota 9039.

Side by side

Serica Ref. 5330 Diving Chronometer DatevsAlexander James Watches A3 Omen II

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

Add a watch

Serica Ref. 5330 Diving Chronometer Date

5330-chronometre-plongee-date

MSRP $2,005

Alexander James Watches A3 Omen II

a3-omenii-aventurine-black-mop

MSRP $650

Buy from Serica ↗

Buy used on eBay ↗

Buy from Alexander James Watches ↗

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At a glance

12 of 29 specs differ

Diameter

Ref. 5330 Diving Chronometer Date39mm

A3 Omen II38mm

Power Reserve

Ref. 5330 Diving Chronometer Date42h

A3 Omen II40h

Water Resistance

Ref. 5330 Diving Chronometer Date300m

A3 Omen II100m

MSRP

Ref. 5330 Diving Chronometer Date$2,005

A3 Omen II$650

Full specifications

Case

5 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Black

—

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

SoProd M100

Miyota 9039

Power Reserve

42h

40h

Complications

COSC, Date

None

Pricing

1 specs

MSRP

$2,005

$650

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Serica Ref. 5330 Diving Chronometer DatevsAlexander James Watches A3 Omen II

At a glance

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