Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Sternglas Naos Mondphase?

At MSRP the Sternglas Naos Mondphase is the cheaper of the two at $323, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,445 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Sternglas Naos Mondphase?

The Serica Ref. 5303 Diving Chronometer wears larger at 39mm versus 38mm for the Sternglas Naos Mondphase — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Sternglas Naos Mondphase?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 50m for the Sternglas Naos Mondphase.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Sternglas Naos Mondphase?

The Serica Ref. 5303 Diving Chronometer runs a automatic caliber (M100 COSC), while the Sternglas Naos Mondphase runs a quartz (Seiko VJ76).

Side by side

Serica Ref. 5303 Diving ChronometervsSternglas Naos Mondphase

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

Serica Ref. 5303 Diving Chronometer

5303-1-diving-chronometer

MSRP $1,768

Sternglas Naos Mondphase

naos-mondphase-mitternachtsblau

MSRP $323

At a glance

14 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Naos Mondphase38mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Naos Mondphase—

Water Resistance

Ref. 5303 Diving Chronometer300m

Naos Mondphase50m

MSRP

Ref. 5303 Diving Chronometer$1,768

Naos Mondphase$323

Full specifications

Case

5 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

—

Lume

Super-LumiNova

Luminova Punkten

Movement

5 specs

Caliber

M100 COSC

Seiko VJ76

Type

Automatic

Quartz

Power Reserve

42h

—

Jewels

—

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$323

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