Side by side

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

Q: Which is cheaper, the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 or the Seiko Prospex Sea?

At MSRP the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 is the cheaper of the two at $399, against $795 for the Seiko Prospex Sea — a $396 gap before any retailer discounting.

Q: Which is bigger, the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 or the Seiko Prospex Sea?

The Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 wears larger at 40mm versus 34mm for the Seiko Prospex Sea — a 6mm difference across the dial.

Q: Which has better water resistance, the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 or the Seiko Prospex Sea?

The Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 is rated to 200m versus 20m for the Seiko Prospex Sea.

Q: What movement does the Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 run compared to the Seiko Prospex Sea?

The Islander Bayport Automatic Dive Watch with Blue Wave Dial #ISL-311 runs a automatic caliber (Seiko NH35), while the Seiko Prospex Sea runs a quartz (6N01).

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 Sea

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MSRP $795

At a glance

15 of 29 specs differ

Diameter

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

Prospex Sea34mm

Power Reserve

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

Prospex Sea40h

Water Resistance

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

Prospex Sea200m

MSRP

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

Prospex Sea$795

Full specifications

Case

5 specs

Diameter

40mm

34mm

Thickness

13.5mm

8.7mm

Lug-to-Lug

48mm

40.8mm

Lug Width

20mm

16mm

Finish

—

Brushed and polished

Crystal & Dial

4 specs

AR Coating

Yes

Anti-reflective coating on inner surface

Dial Color

—

Black

Indices

—

Applied

Lume

None

LumiBrite on hands and index(es)

Movement

5 specs

Caliber

Seiko NH35

6N01

Type

Automatic

Quartz

Beat Rate

0 vph

28,800 vph

Power Reserve

40h

Jewels

Pricing

1 specs

MSRP

$399

$795

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