Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Seestern S424 Full Lume Pilot?

At MSRP the Seestern S424 Full Lume Pilot is the cheaper of the two at $299, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,469 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Seestern S424 Full Lume Pilot?

The Serica Ref. 5303 Diving Chronometer wears larger at 39mm versus 38mm for the Seestern S424 Full Lume Pilot — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Seestern S424 Full Lume Pilot?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 50m for the Seestern S424 Full Lume Pilot.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Seestern S424 Full Lume Pilot?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 41 hours on the Seestern S424 Full Lume Pilot.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Seestern S424 Full Lume Pilot?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Seestern S424 Full Lume Pilot uses the Seiko NH35A.

Side by side

Serica Ref. 5303 Diving ChronometervsSeestern S424 Full Lume Pilot

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

Seestern S424 Full Lume Pilot

S424 V1

MSRP $299

At a glance

16 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

S424 Full Lume Pilot38mm

Power Reserve

Ref. 5303 Diving Chronometer42h

S424 Full Lume Pilot41h

Water Resistance

Ref. 5303 Diving Chronometer300m

S424 Full Lume Pilot50m

MSRP

Ref. 5303 Diving Chronometer$1,768

S424 Full Lume Pilot$299

Full specifications

Case

7 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Black

Lume

Super-LumiNova

Full lume

Movement

5 specs

Caliber

M100 COSC

Seiko NH35A

Beat Rate

28,800 vph

21,600 vph

Power Reserve

42h

41h

Jewels

Complications

COSC

GMT

Pricing

1 specs

MSRP

$1,768

$299

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