Side by side

CWC RN Quartz Divers Watch Mk.2, Matte TopvsMarathon GPQ (General Purpose Quartz) Field Watch

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

RN Quartz Divers Watch Mk.2, Matte Top
CWCRN Quartz Divers Watch Mk.2, Matte Top
MSRP $604
GPQ (General Purpose Quartz) Field Watch
MarathonGPQ (General Purpose Quartz) Field Watch
MSRP $420

At a glance

13 of 29 specs differ
Diameter
RN Quartz Divers Watch Mk.2, Matte Top41mm
GPQ (General Purpose Quartz) Field Watch34mm
Power Reserve
RN Quartz Divers Watch Mk.2, Matte Top40h
GPQ (General Purpose Quartz) Field Watch40h
Water Resistance
RN Quartz Divers Watch Mk.2, Matte Top300m
GPQ (General Purpose Quartz) Field Watch30m
MSRP
RN Quartz Divers Watch Mk.2, Matte Top$604
GPQ (General Purpose Quartz) Field Watch$420

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
41mm
34mm
Thickness
12mm
11.5mm
Lug-to-Lug
47mm
41mm
Lug Width
20mm
16mm
Material
Stainless Steel
Fibreshell Composite
Water Resistance
300m
30m

Crystal & Dial

4 specs
Crystal
Sapphire
Acrylic
AR Coating
Yes
Inner
Dial Color
CWC RN Quartz Divers Watch Mk.2, Matte Top (RN300-MT QS120)
Black
Lume
Super-LumiNova
None

Movement

1 specs
Caliber
Ronda 517
Swiss High-Torque Quartz (3J, EOL)

Pricing

1 specs
MSRP
$604
$420

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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.

CWC RN Quartz Divers Watch Mk.2, Matte Top

Owners widely praise the CWC RN Quartz Divers Watch Mk.2, Matte Top for its excellent matte case finishing, precise seconds hand alignment, and dial reminiscent of vintage military watches. The Mk.2 upgrades, including a sapphire crystal, improved lume, and a precise 120-click bezel described as perfection with no play, are consistently highlighted as significant improvements over earlier versions. One owner noted the quartz movement gained 8 seconds over several months. Overall, owners rate the CWC RN Quartz Divers Watch Mk.2, Matte Top highly for its solid construction, military significance, and terrific value.

Marathon GPQ (General Purpose Quartz) Field Watch

Owners widely praise the Marathon GPQ (General Purpose Quartz) Field Watch for its rugged quartz movement, accuracy, and tritium lume. Reviewers and owners alike highlight its solid build, legibility, and comfortable, lightweight wear, making it particularly well-suited for smaller wrists. Some owners, however, consider the price point of $350-420 to be somewhat high. On balance, the consensus is that owners rate the Marathon GPQ (General Purpose Quartz) Field Watch highly for its dependable quartz accuracy and excellent tritium lume.

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