Which is cheaper, the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

At MSRP the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 is the cheaper of the two at $399, against $3,300 for the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition — a $2,901 gap before any retailer discounting.

Which is bigger, the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

The Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 wears larger at 45mm versus 44mm for the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition — a 1mm difference across the dial.

What movement does the Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301 run compared to the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited 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 1970 Heritage Diver's Black Series Limited Edition uses the 8L35.

Side by side

Islander Islander Automatic Turtle Dive Watch with Blue Dial #ISL-301vsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited 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 1970 Heritage Diver's Black Series Limited Edition

sla061j1

MSRP $3,300

At a glance

16 of 29 specs differ

Diameter

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

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm

Power Reserve

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

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h

Water Resistance

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

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m

MSRP

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

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

6 specs

Diameter

45mm

44mm

Thickness

15mm

13mm

Lug-to-Lug

47mm

49.3mm

Lug Width

22mm

20mm

Finish

—

Brushed and polished

Caseback

Embossed screw-in caseback

Solid

Crystal & Dial

5 specs

Crystal Shape

Double Domed

Curved

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

8L35

Beat Rate

0 vph

28,800 vph

Power Reserve

50h

Jewels

Pricing

1 specs

MSRP

$399

$3,300

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