Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Noctua Watch Corp. Sentinel?

At MSRP the Noctua Watch Corp. Sentinel is the cheaper of the two at $429, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,339 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Noctua Watch Corp. Sentinel?

The Noctua Watch Corp. Sentinel wears larger at 42mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 3mm difference across the dial.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Noctua Watch Corp. Sentinel?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Noctua Watch Corp. Sentinel uses the Seiko NH35A.

Side by side

Serica Ref. 5303 Diving ChronometervsNoctua Watch Corp. Sentinel

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

Noctua Watch Corp.Sentinel

noctua-watch-corp-sentinel-verdant

MSRP $429

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At a glance

12 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Sentinel42mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Sentinel—

Water Resistance

Ref. 5303 Diving Chronometer300m

Sentinel300m

MSRP

Ref. 5303 Diving Chronometer$1,768

Sentinel$429

Full specifications

Case

5 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

—

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

Seiko NH35A

Power Reserve

42h

—

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

—

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Serica Ref. 5303 Diving ChronometervsNoctua Watch Corp. Sentinel

At a glance

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