Which is cheaper, the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition or the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301?

At MSRP the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 is the cheaper of the two at $399, against $3,900 for the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition — a $3,501 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition or the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301?

The Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 wears larger at 45mm versus 42.6mm for the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition — a 2.4mm difference across the dial.

What movement does the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition run compared to the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301?

Both watches run automatic movements — the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition uses the 8L45 and the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 uses the Seiko NH36.

Side by side

Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited EditionvsIslander Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301

Q: Which has better water resistance, the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition or the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301?

The Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition is rated to 300m versus 200m for the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301.

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

Add a watch

Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition

hbf002j1

MSRP $3,900

Islander Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301

islander-automatic-turtle-dive-watch-with-blue-dial-isl-301

MSRP $399

At a glance

17 of 29 specs differ

Diameter

Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition42.6mm

Islander Automatic Turtle Dive Watch with Blue Dial #ISL-30145mm

Power Reserve

Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition72h

Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301—

Water Resistance

Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition300m

Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301200m

MSRP

Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition$3,900

Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301$399

Full specifications

Case

7 specs

Diameter

42.6mm

45mm

Thickness

14.1mm

15mm

Lug-to-Lug

49.3mm

47mm

Lug Width

20mm

22mm

Finish

Brushed and polished

—

Water Resistance

300m

200m

Caseback

Solid

Embossed screw-in caseback

Crystal & Dial

5 specs

Crystal Shape

Curved

Double Domed

AR Coating

Anti-reflective coating on inner surface

Underside

Dial Color

Black

—

Indices

Applied

—

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

4 specs

Caliber

8L45

Seiko NH36

Beat Rate

28,800 vph

0 vph

Power Reserve

72h

Jewels

Pricing

1 specs

MSRP

$3,900

$399

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—Used

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Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited EditionvsIslander Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301

At a glance

Full specifications

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