Side by side

Fortis Marinemaster M-44vsIslander Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300

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

Marinemaster M-44
FortisMarinemaster M-44
MSRP $5,120
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

At a glance

16 of 29 specs differ
Diameter
Marinemaster M-4444mm
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-30039mm
Power Reserve
Marinemaster M-4438h
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300
Water Resistance
Marinemaster M-44300m
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300200m
MSRP
Marinemaster M-44$5,120
Islander Greenport 39mm Dive Watch with Black and White Dial #ISL-300$399

Full specifications

Case

7 specs
Diameter
44mm
39mm
Thickness
14mm
13mm
Lug-to-Lug
0mm
Lug Width
22mm
20mm
Finish
Brushed and polished
Water Resistance
300m
200m
Caseback
Solid
Screw-down

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Inner
Underside
Dial Color
Orange
Indices
Applied

Movement

4 specs
Caliber
Sellita SW220-1
Miyota 8205
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
0h
Jewels
26
0

Pricing

1 specs
MSRP
$5,120
$399

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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.

Fortis Marinemaster M-44

The Fortis Marinemaster M-44 is praised for its excellent build quality and wearability, featuring a highly legible dial and a COSC-certified Kenissi-based movement that ran at 0 seconds per day. Owners appreciate its 70-hour power reserve and the inclusion of multiple straps and a deployant buckle, noting its gorgeous appearance and great wrist presence. A minor point raised is the 21mm lug width, with a wish for it to be 22mm. The Fortis Marinemaster M-44 is priced at $4,150. Overall, owners and reviewers rate the Fortis Marinemaster M-44 highly for its robust specifications and comfortable wearability at its price point.

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.

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