Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Cincinnati Watch Company Sunflower?

At MSRP the Serica Ref. 5303 Diving Chronometer is the cheaper of the two at $1,768, against $1,995 for the Cincinnati Watch Company Sunflower — a $227 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Cincinnati Watch Company Sunflower?

The Serica Ref. 5303 Diving Chronometer wears larger at 39mm versus 38mm for the Cincinnati Watch Company Sunflower — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Cincinnati Watch Company Sunflower?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 100m for the Cincinnati Watch Company Sunflower.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Cincinnati Watch Company Sunflower?

The Cincinnati Watch Company Sunflower carries a 45-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 Cincinnati Watch Company Sunflower?

The Serica Ref. 5303 Diving Chronometer runs a automatic caliber (Soprod M100), while the Cincinnati Watch Company Sunflower runs a manual (Sellita SW210-1).

Side by side

Serica Ref. 5303 Diving ChronometervsCincinnati Watch Company Sunflower

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

Add a watch

Serica Ref. 5303 Diving Chronometer

MSRP $1,768

See the full Ref. 5303 Diving Chronometer

Cincinnati Watch Company Sunflower

MSRP $1,995

See the full Sunflower

Buy from Serica ↗

Buy used on eBay ↗

Buy from Cincinnati Watch Company ↗

Buy used on eBay ↗

At a glance

16 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Sunflower38mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Sunflower45h

Water Resistance

Ref. 5303 Diving Chronometer300m

Sunflower100m

MSRP

Ref. 5303 Diving Chronometer$1,768

Sunflower$1,995

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal Shape

—

Domed

AR Coating

Yes

Underside

Dial Color

Enamel Black

Silver

Lume

Super-LumiNova

None

Movement

5 specs

Caliber

Soprod M100

Sellita SW210-1

Type

Automatic

Manual

Power Reserve

42h

45h

Jewels

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$1,995

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