Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Sheffield Solar?

The Sheffield Solar wears larger at 40mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Sheffield Solar?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 200m for the Sheffield Solar.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Sheffield Solar?

The Serica Ref. 5303 Diving Chronometer runs a automatic caliber (M100 COSC), while the Sheffield Solar runs a solar (Miyota 2070).

Side by side

Serica Ref. 5303 Diving ChronometervsSheffield Solar

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

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Serica Ref. 5303 Diving Chronometer

5303-1-diving-chronometer

MSRP $1,768

solar-green

At a glance

12 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Solar40mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Solar—

Water Resistance

Ref. 5303 Diving Chronometer300m

Solar200m

MSRP

Ref. 5303 Diving Chronometer$1,768

Solar—

Full specifications

Case

4 specs

Diameter

39mm

40mm

Thickness

12.2mm

13mm

Lug-to-Lug

46.5mm

48mm

Water Resistance

300m

200m

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Black

Lume

Super-LumiNova

Swiss lume

Movement

4 specs

Caliber

M100 COSC

Miyota 2070

Type

Automatic

Solar

Power Reserve

42h

—

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

—

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Serica Ref. 5303 Diving ChronometervsSheffield Solar

At a glance

Full specifications

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