Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Astor + Banks AB1405?

At MSRP the Astor + Banks AB1405 is the cheaper of the two at $1,499, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $269 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Astor + Banks AB1405?

The Astor + Banks AB1405 wears larger at 42mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 3mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Astor + Banks AB1405?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 50m for the Astor + Banks AB1405.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Astor + Banks AB1405?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Astor + Banks AB1405.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Astor + Banks AB1405?

The Serica Ref. 5303 Diving Chronometer runs a automatic caliber (M100 COSC), while the Astor + Banks AB1405 runs a manual (Manual Swiss).

Side by side

Serica Ref. 5303 Diving ChronometervsAstor + Banks AB1405

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

Astor + Banks AB1405

mechanical-ab14

MSRP $1,499

At a glance

14 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

AB140542mm

Power Reserve

Ref. 5303 Diving Chronometer42h

AB140540h

Water Resistance

Ref. 5303 Diving Chronometer300m

AB140550m

MSRP

Ref. 5303 Diving Chronometer$1,768

AB1405$1,499

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Black

Lume

Super-LumiNova

None

Movement

4 specs

Caliber

M100 COSC

Manual Swiss

Type

Automatic

Manual

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$1,499

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