Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Praesidus Utah Beach A-11?

At MSRP the Praesidus Utah Beach A-11 is the cheaper of the two at $495, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,273 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Praesidus Utah Beach A-11?

The Serica Ref. 5303 Diving Chronometer wears larger at 39mm versus 38mm for the Praesidus Utah Beach A-11 — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Praesidus Utah Beach A-11?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 100m for the Praesidus Utah Beach A-11.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Praesidus Utah Beach A-11?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Praesidus Utah Beach A-11.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Praesidus Utah Beach A-11?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Praesidus Utah Beach A-11 uses the Seiko NH35.

Side by side

Serica Ref. 5303 Diving ChronometervsPraesidus Utah Beach A-11

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

Praesidus Utah Beach A-11

praesidus-utah-beach

MSRP $495

At a glance

14 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Utah Beach A-1138mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Utah Beach A-1140h

Water Resistance

Ref. 5303 Diving Chronometer300m

Utah Beach A-11100m

MSRP

Ref. 5303 Diving Chronometer$1,768

Utah Beach A-11$495

Full specifications

Case

7 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Utah Beach - Ocean Blue

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

Seiko NH35

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$495

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