Which is cheaper, the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

At MSRP the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 is the cheaper of the two at $399, against $2,500 for the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition — a $2,101 gap before any retailer discounting.

Which is bigger, the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

The Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition wears larger at 42mm versus 40mm for the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 — a 2mm difference across the dial.

Which has better water resistance, the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

The Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 is rated to 200m versus 10m for the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition.

What movement does the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 run compared to the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

Both watches run automatic movements — the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 uses the Seiko NH35 and the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition uses the 8R48.

Side by side

Islander Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311vsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

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

Islander Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311

islander-bayport-automatic-dive-watch-with-blue-wave-dial-isl-311

MSRP $399

Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

srq059j1

MSRP $2,500

At a glance

16 of 29 specs differ

Diameter

Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-31140mm

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm

Power Reserve

Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311—

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h

Water Resistance

Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311200m

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m

MSRP

Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311$399

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500

Full specifications

Case

6 specs

Crystal & Dial

5 specs

Crystal Shape

Flat

Curved

AR Coating

Yes

Anti-reflective coating on inner surface

Dial Color

—

Black

Indices

—

Applied

Lume

None

LumiBrite on hands and index(es)

Movement

4 specs

Caliber

Seiko NH35

8R48

Beat Rate

0 vph

28,800 vph

Power Reserve

45h

Jewels

Pricing

1 specs

MSRP

$399

$2,500

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