Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

At MSRP the Serica Ref. 5303 Diving Chronometer is the cheaper of the two at $1,768, against $2,800 for the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation — a $1,032 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

The Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation wears larger at 39.5mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 0.5mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 200m for the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

The Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation carries a 45-hour power reserve against 42 hours on the Serica Ref. 5303 Diving Chronometer.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation uses the 6L37.

Side by side

Serica Ref. 5303 Diving ChronometervsSeiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

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

Add a watch

Serica Ref. 5303 Diving Chronometer

MSRP $1,768

See the full Ref. 5303 Diving Chronometer

Seiko Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

MSRP $2,800

See the full Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation

At a glance

14 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation39.5mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation45h

Water Resistance

Ref. 5303 Diving Chronometer300m

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation200m

MSRP

Ref. 5303 Diving Chronometer$1,768

Prospex Marinemaster Marinemaster 1965 Diver’s Modern Re-interpretation$2,800

Full specifications

Case

5 specs

Diameter

39mm

39.5mm

Thickness

12.2mm

12.3mm

Lug-to-Lug

46.5mm

47.2mm

Lug Width

0mm

20mm

Water Resistance

300m

200m

Crystal & Dial

4 specs

Crystal Shape

—

Box

AR Coating

Yes

Anti-reflective coating on inner surface

Dial Color

Enamel Black

—

Lume

Super-LumiNova

LumiBrite on hands, index(es) and bezel

Movement

4 specs

Caliber

M100 COSC

6L37

Power Reserve

42h

45h

Jewels

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$2,800

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At a glance

Full specifications

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