Side by side

Fortis Marinemaster M-40vsIslander Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50

Q: Which is cheaper, the Fortis Marinemaster M-40 or the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50?

At MSRP the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50 is the cheaper of the two at $399, against $3,520 for the Fortis Marinemaster M-40 — a $3,121 gap before any retailer discounting.

Q: Which is bigger, the Fortis Marinemaster M-40 or the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50?

The Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50 wears larger at 43mm versus 40mm for the Fortis Marinemaster M-40 — a 3mm difference across the dial.

Q: Which has better water resistance, the Fortis Marinemaster M-40 or the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50?

The Fortis Marinemaster M-40 is rated to 300m versus 200m for the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50.

Q: What movement does the Fortis Marinemaster M-40 run compared to the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50?

Both watches run automatic movements — the Fortis Marinemaster M-40 uses the Sellita SW220-1 and the Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50 uses the Seiko NH36.

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

Fortis Marinemaster M-40

M-40

MSRP $3,520

Islander Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50

islander-43mm-automatic-dual-time-watch-with-solid-link-bracelet-ar-sapphire-cry

MSRP $399

At a glance

16 of 29 specs differ

Diameter

Marinemaster M-4040mm

Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-5043mm

Power Reserve

Marinemaster M-4038h

Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50—

Water Resistance

Marinemaster M-40300m

Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50200m

MSRP

Marinemaster M-40$3,520

Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50$399

Full specifications

Case

8 specs

Crystal & Dial

3 specs

AR Coating

Inner

Yes

Dial Color

Orange

—

Indices

Applied

—

Movement

4 specs

Caliber

Sellita SW220-1

Seiko NH36

Beat Rate

28,800 vph

0 vph

Power Reserve

38h

Jewels

Pricing

1 specs

MSRP

$3,520

$399

Follow this matchup

Get a note when Fortis Marinemaster M-40 vs Islander 43mm Automatic Dual-Time Watch with Solid-Link Bracelet, AR Sapphire Crystal, and Luminous Sapphire Bezel Insert #ISL-50 gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring