Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Gruppo Gamma Vanguard Steel Date?

At MSRP the Gruppo Gamma Vanguard Steel Date is the cheaper of the two at $790, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $978 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Gruppo Gamma Vanguard Steel Date?

The Gruppo Gamma Vanguard Steel Date 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 Gruppo Gamma Vanguard Steel Date?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 100m for the Gruppo Gamma Vanguard Steel Date.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Gruppo Gamma Vanguard Steel Date?

The Gruppo Gamma Vanguard Steel Date carries a 42-hour power reserve against 42 hours on the Serica Ref. 5303 Diving Chronometer.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Gruppo Gamma Vanguard Steel Date?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Gruppo Gamma Vanguard Steel Date uses the Miyota 9015.

Side by side

Serica Ref. 5303 Diving ChronometervsGruppo Gamma Vanguard Steel Date

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

Gruppo Gamma Vanguard Steel Date

ag-11

MSRP $790

At a glance

11 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Vanguard Steel Date42mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Vanguard Steel Date42h

Water Resistance

Ref. 5303 Diving Chronometer300m

Vanguard Steel Date100m

MSRP

Ref. 5303 Diving Chronometer$1,768

Vanguard Steel Date$790

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

Enamel Black

Forged Carbon

Movement

3 specs

Caliber

M100 COSC

Miyota 9015

Power Reserve

42h

Complications

COSC

Date

Pricing

1 specs

MSRP

$1,768

$790

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