Which is cheaper, the Serica Ref. 5330 Diving Chronometer Date or the Seiko Astron GPS Solar 2025 Limited Edition?

At MSRP the Serica Ref. 5330 Diving Chronometer Date is the cheaper of the two at $2,005, against $2,600 for the Seiko Astron GPS Solar 2025 Limited Edition — a $595 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5330 Diving Chronometer Date or the Seiko Astron GPS Solar 2025 Limited Edition?

The Seiko Astron GPS Solar 2025 Limited Edition 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 Seiko Astron GPS Solar 2025 Limited Edition?

The Serica Ref. 5330 Diving Chronometer Date is rated to 300m versus 10m for the Seiko Astron GPS Solar 2025 Limited Edition.

Which has a longer power reserve, the Serica Ref. 5330 Diving Chronometer Date or the Seiko Astron GPS Solar 2025 Limited Edition?

The Serica Ref. 5330 Diving Chronometer Date carries a 42-hour power reserve against 40 hours on the Seiko Astron GPS Solar 2025 Limited Edition.

What movement does the Serica Ref. 5330 Diving Chronometer Date run compared to the Seiko Astron GPS Solar 2025 Limited Edition?

The Serica Ref. 5330 Diving Chronometer Date runs a automatic caliber (SoProd M100), while the Seiko Astron GPS Solar 2025 Limited Edition runs a quartz (3X62).

Side by side

Serica Ref. 5330 Diving Chronometer DatevsSeiko Astron GPS Solar 2025 Limited Edition

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

Seiko Astron GPS Solar 2025 Limited Edition

ssj029j1

MSRP $2,600

At a glance

15 of 29 specs differ

Diameter

Ref. 5330 Diving Chronometer Date39mm

Astron GPS Solar 2025 Limited Edition42mm

Power Reserve

Ref. 5330 Diving Chronometer Date42h

Astron GPS Solar 2025 Limited Edition40h

Water Resistance

Ref. 5330 Diving Chronometer Date300m

Astron GPS Solar 2025 Limited Edition100m

MSRP

Ref. 5330 Diving Chronometer Date$2,005

Astron GPS Solar 2025 Limited Edition$2,600

Full specifications

Case

7 specs

Crystal & Dial

2 specs

AR Coating

Yes

Super-clear coating

Lume

Super-LumiNova

LumiBrite on hands and index(es)

Movement

5 specs

Caliber

SoProd M100

3X62

Type

Automatic

Quartz

Power Reserve

42h

40h

Jewels

Complications

COSC, Date

None

Pricing

1 specs

MSRP

$2,005

$2,600

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