Side by side

CWC RN Quartz Divers Watch Mk.2, Matte TopvsSternglas Naos Großdatum

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
Naos Großdatum
SternglasNaos Großdatum
MSRP $323

At a glance

12 of 29 specs differ
Diameter
RN Quartz Divers Watch Mk.2, Matte Top41mm
Naos Großdatum38mm
Power Reserve
RN Quartz Divers Watch Mk.2, Matte Top40h
Naos Großdatum
Water Resistance
RN Quartz Divers Watch Mk.2, Matte Top300m
Naos Großdatum50m
MSRP
RN Quartz Divers Watch Mk.2, Matte Top$604
Naos Großdatum$323

Full specifications

Case

5 specs
Category
Diver
Dress
Diameter
41mm
38mm
Thickness
12mm
10mm
Lug-to-Lug
47mm
42mm
Water Resistance
300m
50m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
CWC RN Quartz Divers Watch Mk.2, Matte Top (RN300-MT QS120)
Lume
Super-LumiNova
Luminova Punkten

Movement

3 specs
Caliber
Ronda 517
Seiko VJ76
Power Reserve
40h
Jewels
25

Pricing

1 specs
MSRP
$604
$323

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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.

Sternglas Naos Großdatum

The Sternglas Naos Großdatum is praised for its Bauhaus aesthetic and value, with one owner finding it an affordable alternative to other designs. However, some owners report it feels underwhelming and cheap, with a printed-on face, small font, and toy-like hands, and find the strap to be of poor quality. The watch features a 38mm stainless steel case, an Alabaster dial with beige LumiNova, and a Seiko TMI VJ76 quartz movement rated for -20/+20 seconds per month. On balance, owners and reviewers are divided, with the primary point of contention being the perceived quality and aesthetic execution of the Sternglas Naos Großdatum.

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