CWC RN Quartz Divers Watch Mk.2, Matte TopvsGrand Seiko SBGP015

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

CWC RN Quartz Divers Watch Mk.2, Matte Top at true scale

RN Quartz Divers Watch Mk.2, Matte Top

Grand Seiko SBGP015 at true scale

SBGP015

Diameter

41mm

40mm

Lug-to-Lug

47mm

lowest

47.1mm

Thickness

n/a

12.4mm

Water Resistance

300m

highest

200m

MSRP

$604

lowest

$3,800

Movement

Ronda 517

Grand Seiko 9F85

Case

4 specs
Diameter
41mm
40mm
Thickness
n/a
12.4mm
Lug-to-Lug
47mm
47.1mm
Water Resistance
300m
200m

Crystal & Dial

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

Movement

1 specs
Caliber
Ronda 517
Grand Seiko 9F85

Pricing

1 specs
MSRP
$604
$3,800
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Reviews

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 matte finish, precise seconds hand alignment, and old-school dial and hands reminiscent of vintage Omega. The Mk.2 upgrades, including a sapphire crystal, improved lume, and a precise 120-click bezel described as "perfection," are consistently highlighted. Some owners consider its toolish design and comfortable 11mm thickness a significant draw. However, a few find the £700-£900 price point high for a quartz watch, and one owner reported chipping on the PVD finish after a few months. One owner also noted the Ronda 517 quartz movement gained 8 seconds over several months. Overall, owners rate the CWC RN Quartz Divers Watch Mk.2, Matte Top highly for its robust, military-inspired design and significant Mk.2 upgrades at the price.

Grand Seiko SBGP015

Owners widely praise the Grand Seiko SBGP015 for its exceptional dial print, which casts sharp shadows under light, and its versatility, classiness, and substantial feel. The Grand Seiko 9F85 quartz movement is noted for excellent timekeeping, with one owner purchasing it as a grab-and-go option. The watch is 40mm with 200m water resistance. Overall, owners rate the Grand Seiko SBGP015 highly for its sharp dial print and reliable quartz movement.

From video reviewers

The high accuracy of the Caliber 9F85 quartz movement is a significant strength. Reviewers noted the movement's ±10 seconds per year accuracy. The limited 100-meter water resistance was cited as a potential drawback.

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