Side by side

CWC RN Quartz Divers Watch Mk.2, Matte TopvsSeiko 5KX

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
5KX
Seiko5KX
MSRP $350
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.

Seiko 5KX

Owners widely praise the Seiko 5 Sports SKX series for its strong lume and comfortable wearability, with many noting its compact feel due to a short lug-to-lug length. The NH36 movement's accuracy varies, with typical performance between +/-5 to 10 seconds per day, though some report better. A lack of screw-down crown and ISO certification are noted drawbacks for its water resistance. Some owners find the bracelet to be of cheaper construction with hollow links, and a few have reported quality control issues. The consensus is that the Seiko 5 Sports SKX series offers good value for its price, appealing to those who appreciate its tool-like nature and iconic lineage.

At a glance

14 of 29 specs differ
Diameter
RN Quartz Divers Watch Mk.2, Matte Top41mm
5KX42.5mm
Power Reserve
RN Quartz Divers Watch Mk.2, Matte Top40h
5KX41h
Water Resistance
RN Quartz Divers Watch Mk.2, Matte Top300m
5KX100m
MSRP
RN Quartz Divers Watch Mk.2, Matte Top$604
5KX$350

Full specifications

Case

5 specs
Diameter
41mm
42.5mm
Thickness
12mm
13.4mm
Lug-to-Lug
47mm
46mm
Lug Width
20mm
22mm
Water Resistance
300m
100m

Crystal & Dial

4 specs
Crystal
Sapphire
Hardlex
AR Coating
Yes
Inner
Dial Color
CWC RN Quartz Divers Watch Mk.2, Matte Top (RN300-MT QS120)
Black
Lume
Super-LumiNova
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Ronda 517
4R36
Type
Quartz
Automatic
Power Reserve
40h
41h
Jewels
25
24

Pricing

1 specs
MSRP
$604
$350
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