Side by side

Serica Ref. 5303 Diving ChronometervsIslander Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50

Q: Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50?

At MSRP the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50 is the cheaper of the two at $399, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,369 gap before any retailer discounting.

Q: Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50?

The Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50 wears larger at 43mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 4mm difference across the dial.

Q: Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 200m for the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50.

Q: What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50 uses the Seiko NH36.

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

Islander Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50

islander-43mm-automatic-dual-time-watch-with-solid-link-bracelet-ar-sapphire-cry

MSRP $399

At a glance

18 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-5043mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50—

Water Resistance

Ref. 5303 Diving Chronometer300m

Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50200m

MSRP

Ref. 5303 Diving Chronometer$1,768

Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50$399

Full specifications

Case

8 specs

Crystal & Dial

4 specs

AR Coating

Yes

Dial Color

Enamel Black

—

Indices

Applied

—

Lume

Super-LumiNova

None

Movement

5 specs

Caliber

M100 COSC

Seiko NH36

Beat Rate

28,800 vph

0 vph

Power Reserve

42h

Jewels

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$399

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