Side by side

Marathon GPQ-D (Officer's Quartz with Date) Field WatchvsPhoibos Reef Master

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

GPQ-D (Officer's Quartz with Date) Field Watch
MarathonGPQ-D (Officer's Quartz with Date) Field Watch
MSRP $650
Reef Master
PhoibosReef Master
MSRP $335

At a glance

13 of 29 specs differ
Diameter
GPQ-D (Officer's Quartz with Date) Field Watch36mm
Reef Master42mm
Power Reserve
GPQ-D (Officer's Quartz with Date) Field Watch40h
Reef Master40h
Water Resistance
GPQ-D (Officer's Quartz with Date) Field Watch30m
Reef Master200m
MSRP
GPQ-D (Officer's Quartz with Date) Field Watch$650
Reef Master$335

Full specifications

Case

7 specs
Category
Field
Diver
Diameter
36mm
42mm
Thickness
11mm
13mm
Lug-to-Lug
44mm
48mm
Lug Width
16mm
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
30m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Black
Green
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
Swiss High-Torque Quartz (3J, EOL)
SII NH38
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$650
$335

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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.

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.

Phoibos Reef Master

Owners widely praise the Phoibos Reef Master for its exceptional value, highlighting its sapphire crystal, DLC coating, and extensive BGW9 lume. The watch is noted for its cool lume, with one owner finding it not bulky despite its robust build. The Shamrock Green dial and texture are highly praised, as is the comfortable bracelet with solid end links. However, the bezel action is described as rough, and the basic folding clasp is a disappointment. Accuracy is reported as excellent, with one owner seeing +-2 sec/day. Some find the 42mm size almost too big for their wrists, and the date window is considered too small. Overall, owners rate the Phoibos Reef Master highly for its impressive feature set and value at its price point.

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