Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the POLPORA Zawisza Czarny?

At MSRP the Serica Ref. 5303 Diving Chronometer is the cheaper of the two at $1,768, against $1,790 for the POLPORA Zawisza Czarny — a $22 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the POLPORA Zawisza Czarny?

The POLPORA Zawisza Czarny wears larger at 40.5mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 1.5mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the POLPORA Zawisza Czarny?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 50m for the POLPORA Zawisza Czarny.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the POLPORA Zawisza Czarny?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the POLPORA Zawisza Czarny.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the POLPORA Zawisza Czarny?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the POLPORA Zawisza Czarny uses the Sellita SW295-1.

Side by side

Serica Ref. 5303 Diving ChronometervsPOLPORA POLPORA Zawisza Czarny

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

POLPORA POLPORA Zawisza Czarny

zawisza-czarny

MSRP $1,790

At a glance

12 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

POLPORA Zawisza Czarny40.5mm

Power Reserve

Ref. 5303 Diving Chronometer42h

POLPORA Zawisza Czarny40h

Water Resistance

Ref. 5303 Diving Chronometer300m

POLPORA Zawisza Czarny50m

MSRP

Ref. 5303 Diving Chronometer$1,768

POLPORA Zawisza Czarny$1,790

Full specifications

Case

5 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Black

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

Sellita SW295-1

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$1,790

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