Side by side

CWC RN Quartz Divers Watch Mk.2, Matte TopvsLongines MASTER COLLECTION CHRONO MOONPHASE

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
MASTER COLLECTION CHRONO MOONPHASE
LonginesMASTER COLLECTION CHRONO MOONPHASE
MSRP $4,150
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.

Longines MASTER COLLECTION CHRONO MOONPHASE

Owners widely praise the Longines MASTER COLLECTION CHRONO MOONPHASE for its beautiful and legible dial, offering significant complications for its value. Accuracy figures vary, with one owner reporting +8 seconds per day and another stating it is their most accurate watch. Some find the chronograph hour hand placement inconvenient, and the date hand can occasionally overlap the hour hand. The watch is noted as being thick, typical of Valjoux-based chronographs, and its 3 bar water resistance limits it to less demanding environments. One owner observed scuffs on the case of their example, and another found the blue on the band and numerals less vibrant than pictured. Overall, owners rate the Longines MASTER COLLECTION CHRONO MOONPHASE highly for its impressive complications and aesthetic appeal at its price point.

At a glance

21 of 29 specs differ
Diameter
RN Quartz Divers Watch Mk.2, Matte Top41mm
MASTER COLLECTION CHRONO MOONPHASE40mm
Power Reserve
RN Quartz Divers Watch Mk.2, Matte Top40h
MASTER COLLECTION CHRONO MOONPHASE
Water Resistance
RN Quartz Divers Watch Mk.2, Matte Top300m
MASTER COLLECTION CHRONO MOONPHASE30m
MSRP
RN Quartz Divers Watch Mk.2, Matte Top$604
MASTER COLLECTION CHRONO MOONPHASE$4,150

Full specifications

Case

8 specs
Category
Diver
Chronograph
Diameter
41mm
40mm
Thickness
12mm
14.3mm
Lug-to-Lug
47mm
46.7mm
Lug Width
20mm
21mm
Finish
Brushed and polished
Water Resistance
300m
30m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Yes
Dial Color
CWC RN Quartz Divers Watch Mk.2, Matte Top (RN300-MT QS120)
Ivory
Indices
Applied
Lume
Super-LumiNova
None

Movement

7 specs
Caliber
Ronda 517
L687.5
Type
Quartz
Automatic
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
0h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$604
$4,150
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