Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Islander Melville GMT with Blue Hammer Dial #ISL-222?

At MSRP the Islander Melville GMT with Blue Hammer Dial #ISL-222 is the cheaper of the two at $369, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,399 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Islander Melville GMT with Blue Hammer Dial #ISL-222?

The Islander Melville GMT with Blue Hammer Dial #ISL-222 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 Islander Melville GMT with Blue Hammer Dial #ISL-222?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 100m for the Islander Melville GMT with Blue Hammer Dial #ISL-222.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Islander Melville GMT with Blue Hammer Dial #ISL-222?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Islander Melville GMT with Blue Hammer Dial #ISL-222 uses the Seiko NH34.

Side by side

Serica Ref. 5303 Diving ChronometervsIslander Islander Melville GMT with Blue Hammer Dial #ISL-222

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 Melville GMT with Blue Hammer Dial #ISL-222

islander-melville-gmt-with-blue-hammer-dial-isl-222

MSRP $369

At a glance

18 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Islander Melville GMT with Blue Hammer Dial #ISL-22240mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Islander Melville GMT with Blue Hammer Dial #ISL-222—

Water Resistance

Ref. 5303 Diving Chronometer300m

Islander Melville GMT with Blue Hammer Dial #ISL-222100m

MSRP

Ref. 5303 Diving Chronometer$1,768

Islander Melville GMT with Blue Hammer Dial #ISL-222$369

Full specifications

Case

7 specs

Crystal & Dial

5 specs

Crystal Shape

Flat

Domed

AR Coating

Yes

Underside

Dial Color

Enamel Black

—

Indices

Applied

—

Lume

Super-LumiNova

None

Movement

5 specs

Caliber

M100 COSC

Seiko NH34

Beat Rate

28,800 vph

0 vph

Power Reserve

42h

Jewels

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$369

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