Side by side

CWC RN Quartz Divers Watch Mk.2, Matte TopvsGrand Seiko SLGC006

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
SLGC006
Grand SeikoSLGC006
MSRP $22,600

At a glance

13 of 29 specs differ
Diameter
RN Quartz Divers Watch Mk.2, Matte Top41mm
SLGC00643.2mm
Power Reserve
RN Quartz Divers Watch Mk.2, Matte Top40h
SLGC00672h
Water Resistance
RN Quartz Divers Watch Mk.2, Matte Top300m
SLGC006100m
MSRP
RN Quartz Divers Watch Mk.2, Matte Top$604
SLGC006$22,600

Full specifications

Case

7 specs
Category
Diver
Chronograph
Diameter
41mm
43.2mm
Thickness
12mm
15.4mm
Lug-to-Lug
47mm
51.5mm
Lug Width
20mm
23mm
Material
Stainless Steel
Gold
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
9SC5
Type
Quartz
Automatic
Power Reserve
40h
72h

Pricing

1 specs
MSRP
$604
$22,600

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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 SLGC006

Owners widely praise the Grand Seiko SLGC006's stunning copper Mount Iwate dial and its high-frequency Caliber 9SC5 movement, which operates at 36,000vph and achieves accuracy between -3/+5 seconds per day with a 72-hour power reserve. Reviewers note the watch's large 43.2mm size, though some find the Evolution 9 case design improves wearability. Criticisms include the $22,600 price point, the 4:30 date window placement, and the lack of bracelet micro-adjustment. Opinions on the dial are split, with some finding it beautiful and others comparing it to rust or the Australian outback. Some question the extent of the gold accents for a "two-tone" designation. Overall, owners and reviewers acknowledge the Grand Seiko SLGC006's striking aesthetics and advanced movement, but debate its value proposition and certain design choices.

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