Side by side

CWC RN Quartz Divers Watch Mk.2, Matte TopvsGrand Seiko SBGX359

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
SBGX359
Grand SeikoSBGX359
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 SBGX359

The Grand Seiko SBGX359 is lauded for its technically advanced 9F51 quartz movement, enabling a compact 33mm x 9.1mm stainless steel case and offering ±10 seconds per year accuracy. Reviewers highlight the refined finishing of its Snowflake dial and 100 meters of water resistance. However, it comes with a US$3,200 price tag, representing a $500 increase over prior 9F models. Overall, reviewers praise the Grand Seiko SBGX359 for its compact dimensions and precise quartz movement at the specified price point.

At a glance

10 of 29 specs differ
Diameter
RN Quartz Divers Watch Mk.2, Matte Top41mm
SBGX35933mm
Power Reserve
RN Quartz Divers Watch Mk.2, Matte Top40h
SBGX35940h
Water Resistance
RN Quartz Divers Watch Mk.2, Matte Top300m
SBGX359100m
MSRP
RN Quartz Divers Watch Mk.2, Matte Top$604
SBGX359

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
41mm
33mm
Thickness
12mm
9.1mm
Lug-to-Lug
47mm
39.7mm
Lug Width
20mm
15mm
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

1 specs
Caliber
Ronda 517
9F51

Pricing

1 specs
MSRP
$604
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