Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Sugess Chrono Heritage SU1901F?

At MSRP the Sugess Chrono Heritage SU1901F is the cheaper of the two at $189, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,579 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Sugess Chrono Heritage SU1901F?

The Serica Ref. 5303 Diving Chronometer wears larger at 39mm versus 38mm for the Sugess Chrono Heritage SU1901F — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Sugess Chrono Heritage SU1901F?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 5m for the Sugess Chrono Heritage SU1901F.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Sugess Chrono Heritage SU1901F?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 35 hours on the Sugess Chrono Heritage SU1901F.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Sugess Chrono Heritage SU1901F?

The Serica Ref. 5303 Diving Chronometer runs a automatic caliber (M100 COSC), while the Sugess Chrono Heritage SU1901F runs a manual (Seagull ST19).

Side by side

Serica Ref. 5303 Diving ChronometervsSugess Chrono Heritage SU1901F

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

Sugess Chrono Heritage SU1901F

SU1901F

MSRP $189

At a glance

15 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Chrono Heritage SU1901F38mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Chrono Heritage SU1901F35h

Water Resistance

Ref. 5303 Diving Chronometer300m

Chrono Heritage SU1901F5m

MSRP

Ref. 5303 Diving Chronometer$1,768

Chrono Heritage SU1901F$189

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Black

Lume

Super-LumiNova

None

Movement

5 specs

Caliber

M100 COSC

Seagull ST19

Type

Automatic

Manual

Beat Rate

28,800 vph

3 vph

Power Reserve

42h

35h

Complications

COSC

GMT, Chronograph, Moonphase

Pricing

1 specs

MSRP

$1,768

$189

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