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

At MSRP the Serica Ref. 5303 Diving Chronometer is the cheaper of the two at $1,768, against $1,800 for the Cincinnati Watch Company Ice Blue — a $32 gap before any retailer discounting.

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

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

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

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

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

The Cincinnati Watch Company Ice Blue 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 Ice Blue?

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

Side by side

Serica Ref. 5303 Diving ChronometervsCincinnati Watch Company Ice Blue

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

The bottom line

The 38mm Ice Blue wears 1mm narrower than the 39mm Ref.

Where to get them

Check prices & track

Serica Ref. 5303 Diving Chronometer

MSRP $1,768

Visit Serica Check price on eBayaffiliate

Cincinnati Watch Company Ice Blue

MSRP $1,800

Visit Cincinnati Watch Company Check price on eBayaffiliate

Serica Ref. 5303 Diving Chronometer

5303-1-diving-chronometer

MSRP $1,768

Cincinnati Watch Company Ice Blue

ice-blue

MSRP $1,800

At a glance

19 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Ice Blue38mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Ice Blue45h

Water Resistance

Ref. 5303 Diving Chronometer300m

Ice Blue100m

MSRP

Ref. 5303 Diving Chronometer$1,768

Ice Blue$1,800

Full specifications

Case

7 specs

Crystal & Dial

5 specs

Crystal Shape

Flat

Domed

AR Coating

Yes

Underside

Dial Color

Enamel Black

Silver

Indices

Applied

—

Lume

Super-LumiNova

None

Movement

6 specs

Caliber

M100 COSC

Sellita SW210-1

Type

Automatic

Manual

Beat Rate

28,800 vph

0 vph

Power Reserve

42h

45h

Jewels

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$1,800

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