Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Spinnaker Tesei Titanium?

At MSRP the Spinnaker Tesei Titanium is the cheaper of the two at $625, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,143 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Spinnaker Tesei Titanium?

The Spinnaker Tesei Titanium 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 Spinnaker Tesei Titanium?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 200m for the Spinnaker Tesei Titanium.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Spinnaker Tesei Titanium?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Spinnaker Tesei Titanium.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Spinnaker Tesei Titanium?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Spinnaker Tesei Titanium uses the SII NH35A.

Side by side

Serica Ref. 5303 Diving ChronometervsSpinnaker Tesei Titanium

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

Spinnaker Tesei Titanium

tesei-titanium-automatic-matte-black-sp-5084-11

MSRP $625

At a glance

13 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Tesei Titanium42mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Tesei Titanium40h

Water Resistance

Ref. 5303 Diving Chronometer300m

Tesei Titanium200m

MSRP

Ref. 5303 Diving Chronometer$1,768

Tesei Titanium$625

Full specifications

Case

6 specs

Diameter

39mm

42mm

Thickness

12.2mm

14mm

Lug-to-Lug

46.5mm

50mm

Lug Width

20mm

22mm

Material

Stainless Steel

Titanium

Water Resistance

300m

200m

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Black

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

SII NH35A

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$625

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