What movement does the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 run compared to the Grand Seiko SLGH005?

Both watches run automatic movements — the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 uses the Seiko NH36 and the Grand Seiko SLGH005 uses the 9SA5.

Side by side

Islander Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301vsGrand Seiko SLGH005

Q: Which is cheaper, the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 or the Grand Seiko SLGH005?

At MSRP the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 is the cheaper of the two at $399, against $9,800 for the Grand Seiko SLGH005 — a $9,401 gap before any retailer discounting.

Q: Which is bigger, the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 or the Grand Seiko SLGH005?

The Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 wears larger at 45mm versus 40mm for the Grand Seiko SLGH005 — a 5mm difference across the dial.

Q: Which has better water resistance, the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 or the Grand Seiko SLGH005?

The Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 is rated to 200m versus 100m for the Grand Seiko SLGH005.

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

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

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

MSRP $399

Grand Seiko SLGH005

slgh005g

MSRP $9,800

At a glance

15 of 29 specs differ

Diameter

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

SLGH00540mm

Power Reserve

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

SLGH00580h

Water Resistance

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

SLGH005100m

MSRP

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

SLGH005$9,800

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal Shape

Double Domed

Flat

AR Coating

Underside

Yes

Dial Color

—

Black

Indices

—

Applied

Movement

4 specs

Caliber

Seiko NH36

9SA5

Beat Rate

0 vph

28,800 vph

Power Reserve

80h

Jewels

Pricing

1 specs

MSRP

$399

$9,800

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