Side by side

CWC RN Quartz Divers Watch Mk.2, Matte TopvsFortis Marinemaster M-40

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
Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520

At a glance

12 of 29 specs differ
Diameter
RN Quartz Divers Watch Mk.2, Matte Top41mm
Marinemaster M-4040mm
Power Reserve
RN Quartz Divers Watch Mk.2, Matte Top40h
Marinemaster M-4038h
Water Resistance
RN Quartz Divers Watch Mk.2, Matte Top300m
Marinemaster M-40300m
MSRP
RN Quartz Divers Watch Mk.2, Matte Top$604
Marinemaster M-40$3,520

Full specifications

Case

4 specs
Diameter
41mm
40mm
Thickness
12mm
13mm
Lug-to-Lug
47mm
Lug Width
20mm
21mm

Crystal & Dial

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

Movement

4 specs
Caliber
Ronda 517
Sellita SW220-1
Type
Quartz
Automatic
Power Reserve
40h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$604
$3,520

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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.

Fortis Marinemaster M-40

Owners praise the Fortis Amber Orange for its gorgeous appearance and strong wrist presence, noting its crazy lume and 70-hour power reserve. The Doxa SUB 300T, described as having a superb, eccentric design with a highly legible dial and functional no-decompression bezel, uses an ETA 2824-2 movement. However, the SUB 300T's 42.5mm case wears large and its 14mm thickness is not ideal for dress shirts, though it boasts 1,200m water resistance. On balance, owners appreciate the Fortis Amber Orange for its striking aesthetics and impressive lume.

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