Side by side

Islander Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300vsZelos Mako 4

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
Mako 4
ZelosMako 4
MSRP $529

At a glance

17 of 29 specs differ
Diameter
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-30039mm
Mako 440mm
Power Reserve
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300
Mako 440h
Water Resistance
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300200m
Mako 4300m
MSRP
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300$399
Mako 4$529

Full specifications

Case

7 specs
Diameter
39mm
40mm
Thickness
13mm
12.2mm
Lug-to-Lug
0mm
40mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
200m
300m
Caseback
Screw-down
Solid

Crystal & Dial

5 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Diver - Flare
Indices
Applied

Movement

4 specs
Caliber
Miyota 8205
Miyota 9015
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
40h
Jewels
0
25

Pricing

1 specs
MSRP
$399
$529

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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.

Zelos Mako 4

Owners widely praise Zelos' dial finishing, with specific admiration for blued markers and hands, and the unique titanium bezel insert. Reviewers highlight the Mako 4's impressive case finishing and fully lumed ceramic bezel for its price point, noting the boxed sapphire crystal and wavy dial texture contribute to a vintage feel. The Sellita SW200 movement is described as reliable, with one owner reporting accuracy of -0.3 seconds per day. However, the crown can be difficult to grip, and the winding mechanism offers resistance when screwing down, while the watch's height may hinder wearability under a suit cuff. The tropic rubber strap is considered excellent, in contrast to a stiff leather option. On balance, owners and reviewers rate the Zelos Mako 4 highly for its exceptional dial and case finishing at its price point.

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