Side by side

CWC RN Quartz Divers Watch Mk.2, Matte TopvsGrand Seiko SBGA375

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
SBGA375
Grand SeikoSBGA375
MSRP $5,600

At a glance

12 of 29 specs differ
Diameter
RN Quartz Divers Watch Mk.2, Matte Top41mm
SBGA37540mm
Power Reserve
RN Quartz Divers Watch Mk.2, Matte Top40h
SBGA37572h
Water Resistance
RN Quartz Divers Watch Mk.2, Matte Top300m
SBGA375100m
MSRP
RN Quartz Divers Watch Mk.2, Matte Top$604
SBGA375$5,600

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
41mm
40mm
Thickness
12mm
12.5mm
Lug-to-Lug
47mm
46.2mm
Lug Width
20mm
19mm
Water Resistance
300m
100m

Crystal & Dial

2 specs
Dial Color
CWC RN Quartz Divers Watch Mk.2, Matte Top (RN300-MT QS120)
Black
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Ronda 517
9R65
Type
Quartz
Spring Drive
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$604
$5,600

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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.

Grand Seiko SBGA375

Grand Seiko SBGA375 owners praise its classic, subtle design and the engineering of its Spring Drive movement, with one noting it "does not fail to deliver what they are known for." The dial offers good legibility, with polished side bevels on the hour markers catching light well. However, one owner scuffed the bezel within a week, and another questioned if a lug was missing. Overall, owners rate the Grand Seiko SBGA375 highly for its refined design and movement engineering, signaling discerning taste.

From video reviewers

The Spring Drive movement's smooth sweep is a key strength. The bracelet's taper and clasp were cited as areas for improvement.

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