Which is cheaper, the Serica Ref. 5330 Diving Chronometer Date or the Grand Seiko SBGR321?

At MSRP the Serica Ref. 5330 Diving Chronometer Date is the cheaper of the two at $2,005, against $5,200 for the Grand Seiko SBGR321 — a $3,195 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5330 Diving Chronometer Date or the Grand Seiko SBGR321?

The Grand Seiko SBGR321 wears larger at 40mm versus 39mm for the Serica Ref. 5330 Diving Chronometer Date — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5330 Diving Chronometer Date or the Grand Seiko SBGR321?

The Serica Ref. 5330 Diving Chronometer Date is rated to 300m versus 100m for the Grand Seiko SBGR321.

Which has a longer power reserve, the Serica Ref. 5330 Diving Chronometer Date or the Grand Seiko SBGR321?

The Grand Seiko SBGR321 carries a 72-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 Grand Seiko SBGR321?

Both watches run automatic movements — the Serica Ref. 5330 Diving Chronometer Date uses the SoProd M100 and the Grand Seiko SBGR321 uses the 9S65.

Side by side

Serica Ref. 5330 Diving Chronometer DatevsGrand Seiko SBGR321

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

Grand Seiko SBGR321

sbgr321g

MSRP $5,200

At a glance

10 of 29 specs differ

Diameter

Ref. 5330 Diving Chronometer Date39mm

SBGR32140mm

Power Reserve

Ref. 5330 Diving Chronometer Date42h

SBGR32172h

Water Resistance

Ref. 5330 Diving Chronometer Date300m

SBGR321100m

MSRP

Ref. 5330 Diving Chronometer Date$2,005

SBGR321$5,200

Full specifications

Case

5 specs

Crystal & Dial

1 specs

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

SoProd M100

9S65

Power Reserve

42h

72h

Complications

COSC, Date

None

Pricing

1 specs

MSRP

$2,005

$5,200

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