Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Oak & Oscar The Humboldt Seven Year?

At MSRP the Serica Ref. 5303 Diving Chronometer is the cheaper of the two at $1,768, against $2,400 for the Oak & Oscar The Humboldt Seven Year — a $632 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Oak & Oscar The Humboldt Seven Year?

The Oak & Oscar The Humboldt Seven Year wears larger at 39.5mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 0.5mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Oak & Oscar The Humboldt Seven Year?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 200m for the Oak & Oscar The Humboldt Seven Year.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Oak & Oscar The Humboldt Seven Year?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Oak & Oscar The Humboldt Seven Year uses the Sellita SW300.

Side by side

Serica Ref. 5303 Diving ChronometervsOak & Oscar The Humboldt Seven Year

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

Oak & Oscar The Humboldt Seven Year

HUMSEVENYEAR

MSRP $2,400

At a glance

13 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

The Humboldt Seven Year39.5mm

Power Reserve

Ref. 5303 Diving Chronometer42h

The Humboldt Seven Year42h

Water Resistance

Ref. 5303 Diving Chronometer300m

The Humboldt Seven Year200m

MSRP

Ref. 5303 Diving Chronometer$1,768

The Humboldt Seven Year$2,400

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Crystal Shape

Flat

Double-domed

AR Coating

Yes

Underside

Dial Color

Enamel Black

Black

Movement

3 specs

Caliber

M100 COSC

Sellita SW300

Beat Rate

28,800 vph

4 vph

Complications

COSC

GMT, Chronograph, Date

Pricing

1 specs

MSRP

$1,768

$2,400

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