Which is cheaper, the Serica Ref. 5330 Diving Chronometer Date or the Orient RA-AC0K Diver Watch?

At MSRP the Orient RA-AC0K Diver Watch is the cheaper of the two at $455, against $2,005 for the Serica Ref. 5330 Diving Chronometer Date — a $1,550 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5330 Diving Chronometer Date or the Orient RA-AC0K Diver Watch?

The Orient RA-AC0K Diver Watch wears larger at 43.4mm versus 39mm for the Serica Ref. 5330 Diving Chronometer Date — a 4.4mm difference across the dial.

Which has better water resistance, the Serica Ref. 5330 Diving Chronometer Date or the Orient RA-AC0K Diver Watch?

The Serica Ref. 5330 Diving Chronometer Date is rated to 300m versus 200m for the Orient RA-AC0K Diver Watch.

Which has a longer power reserve, the Serica Ref. 5330 Diving Chronometer Date or the Orient RA-AC0K Diver Watch?

The Serica Ref. 5330 Diving Chronometer Date carries a 42-hour power reserve against 40 hours on the Orient RA-AC0K Diver Watch.

What movement does the Serica Ref. 5330 Diving Chronometer Date run compared to the Orient RA-AC0K Diver Watch?

Both watches run automatic movements — the Serica Ref. 5330 Diving Chronometer Date uses the SoProd M100 and the Orient RA-AC0K Diver Watch uses the F6722.

Side by side

Serica Ref. 5330 Diving Chronometer DatevsOrient RA-AC0K Diver Watch

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

Orient RA-AC0K Diver Watch

ra-ac0k01b30b

MSRP $455

At a glance

15 of 29 specs differ

Diameter

Ref. 5330 Diving Chronometer Date39mm

RA-AC0K Diver Watch43.4mm

Power Reserve

Ref. 5330 Diving Chronometer Date42h

RA-AC0K Diver Watch40h

Water Resistance

Ref. 5330 Diving Chronometer Date300m

RA-AC0K Diver Watch200m

MSRP

Ref. 5330 Diving Chronometer Date$2,005

RA-AC0K Diver Watch$455

Full specifications

Case

5 specs

Diameter

39mm

43.4mm

Thickness

12.2mm

12.8mm

Lug-to-Lug

46.5mm

51mm

Lug Width

20mm

22mm

Water Resistance

300m

200m

Crystal & Dial

4 specs

Crystal Shape

Flat

—

AR Coating

Yes

—

Indices

Applied

—

Lume

Super-LumiNova

None

Movement

5 specs

Caliber

SoProd M100

F6722

Beat Rate

28,800 vph

21,600 vph

Power Reserve

42h

40h

Jewels

Complications

COSC, Date

Date

Pricing

1 specs

MSRP

$2,005

$455

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