Which is cheaper, the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 or the Marathon GPQ-D (Officer's Quartz with Date) Field Watch?

At MSRP the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 is the cheaper of the two at $379, against $650 for the Marathon GPQ-D (Officer's Quartz with Date) Field Watch — a $271 gap before any retailer discounting.

Which is bigger, the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 or the Marathon GPQ-D (Officer's Quartz with Date) Field Watch?

The Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 wears larger at 40mm versus 36mm for the Marathon GPQ-D (Officer's Quartz with Date) Field Watch — a 4mm difference across the dial.

What movement does the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 run compared to the Marathon GPQ-D (Officer's Quartz with Date) Field Watch?

The Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 runs a automatic caliber (Seiko NH34), while the Marathon GPQ-D (Officer's Quartz with Date) Field Watch runs a quartz (Swiss High-Torque Quartz (3J, EOL)).

Side by side

Islander Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316vsMarathon GPQ-D (Officer's Quartz with Date) Field Watch

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

Islander Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316

islander-calabro-gmt-world-time-automatic-watch-with-anthracite-dial-isl-316

MSRP $379

Marathon GPQ-D (Officer's Quartz with Date) Field Watch

officers-watch-with-date-gpq-39mm-case-crown-defstan

MSRP $650

At a glance

18 of 29 specs differ

Diameter

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-31640mm

GPQ-D (Officer's Quartz with Date) Field Watch36mm

Power Reserve

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316—

GPQ-D (Officer's Quartz with Date) Field Watch40h

Water Resistance

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316200m

GPQ-D (Officer's Quartz with Date) Field Watch30m

MSRP

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316$379

GPQ-D (Officer's Quartz with Date) Field Watch$650

Full specifications

Case

9 specs

Crystal & Dial

3 specs

AR Coating

Underside

Inner

Dial Color

—

Black

Indices

—

Applied

Movement

5 specs

Caliber

Seiko NH34

Swiss High-Torque Quartz (3J, EOL)

Type

Automatic

Quartz

Beat Rate

0 vph

28,800 vph

Power Reserve

40h

Jewels

Pricing

1 specs

MSRP

$379

$650

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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 Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316

Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 offers excellent value at $329 MSRP, featuring a handsome anthracite dial with applied indices, a sapphire crystal, and a quality 120-click unidirectional bezel. Owners highlight the NH34 movement and well-proportioned 40x48x20mm case. Overall, owners rate the Islander Calabro GMT World Time Automatic Watch with Anthracite Dial #ISL-316 highly for its value and feature set at the price point.

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Marathon GPQ-D (Officer's Quartz with Date) Field Watch

Marathon GPQ-D (Officer's Quartz with Date) Field Watch owners praise its tritium tubes, Mil-spec designation, and scratch-resistant case finish, with some finding the 36mm size practical for field use. However, some owners criticize its perceived overpriced nature, thick case, and squared-off lugs, while others point to the composite case material, 30m water resistance, and unbranded movement as drawbacks. On balance, owners are divided on the Marathon GPQ-D (Officer's Quartz with Date) Field Watch, with opinions split on its value and design features.

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