Side by side

Islander Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300vsSeiko Prospex LX line

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

Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300
IslanderIslander Greenport 39mm Dive Watch with Black and White Dial #ISL-300
MSRP $399
Prospex LX line
SeikoProspex LX line
MSRP $6,500

At a glance

19 of 29 specs differ
Diameter
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-30039mm
Prospex LX line44.8mm
Power Reserve
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300
Prospex LX line72h
Water Resistance
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300200m
Prospex LX line300m
MSRP
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300$399
Prospex LX line$6,500

Full specifications

Case

8 specs
Diameter
39mm
44.8mm
Thickness
13mm
15.7mm
Lug-to-Lug
0mm
50.9mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Finish
Brushed and polished
Water Resistance
200m
300m
Caseback
Screw-down
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
Black
Indices
Applied
Lume
None
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
Miyota 8205
5R65
Type
Automatic
Spring Drive
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
72h
Jewels
0
30

Pricing

1 specs
MSRP
$399
$6,500

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300

The Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300 is praised for its 39mm size and comfortable fit, with its bi-directional dual time bezel noted as a useful feature for tracking different time zones. Owners appreciate the lumed ceramic bezel and the slightly domed sapphire crystal. One owner specifically highlights the dial layout as a strong positive. The screw-down crown is also mentioned as a nice touch. On balance, owners rate the Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300 highly for its wearability and functional bezel.

Seiko Prospex LX line

Owners widely report the Seiko Prospex LX line's finishing is a step up from other models, with a case that sits well on the wrist, and some praise the green sunburst dial with blue anti-reflective sapphire crystal as phenomenal. However, owners note the high MSRP limited sales, with some desiring smaller cases and a reduced price, and others experienced quality control issues such as detached second hands and peeling DLC coating, leading to concerns about fragility. On balance, owners feel the Seiko Prospex LX line was discontinued due to pricing that alienated its target market, despite its attractive dial.

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