Which is cheaper, the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 or the Seiko Prospex Sea Save the Ocean Special Edition?

At MSRP the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 is the cheaper of the two at $399, against $625 for the Seiko Prospex Sea Save the Ocean Special Edition — a $226 gap before any retailer discounting.

What movement does the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 run compared to the Seiko Prospex Sea Save the Ocean Special Edition?

Both watches run automatic movements — the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 uses the Seiko NH36 and the Seiko Prospex Sea Save the Ocean Special Edition uses the 4R36.

Side by side

Islander Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301vsSeiko Prospex Sea Save the Ocean Special Edition

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

Seiko Prospex Sea Save the Ocean Special Edition

srpf77

MSRP $625

At a glance

14 of 29 specs differ

Diameter

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

Prospex Sea Save the Ocean Special Edition45mm

Power Reserve

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

Prospex Sea Save the Ocean Special Edition41h

Water Resistance

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

Prospex Sea Save the Ocean Special Edition200m

MSRP

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

Prospex Sea Save the Ocean Special Edition$625

Full specifications

Case

4 specs

Thickness

15mm

13.2mm

Lug-to-Lug

47mm

47.7mm

Finish

—

Brushed and polished

Caseback

Embossed screw-in caseback

Solid

Crystal & Dial

5 specs

Crystal Shape

Double Domed

Flat

AR Coating

Underside

Anti-reflective coating on inner surface

Dial Color

—

Black

Indices

—

Applied

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

4 specs

Caliber

Seiko NH36

4R36

Beat Rate

0 vph

28,800 vph

Power Reserve

41h

Jewels

Pricing

1 specs

MSRP

$399

$625

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