Side by side

CWC G40 Sonar Quartz WatchvsSternglas Marus 2.0

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

G40 Sonar Quartz Watch
CWCG40 Sonar Quartz Watch
MSRP $333
Marus 2.0
SternglasMarus 2.0
MSRP $593
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

CWC G40 Sonar Quartz Watch

Owners widely appreciate the CWC G40 Sonar Quartz Watch for its classic G10 design, 40mm case size, and 20atm water resistance, noting its light, rugged, and reliable "grab-n-go" nature. Some find the dial proportions have too much negative space, while others praise its unique anodized red crown and quality NATO straps. A larger crown can dig into the wrist, and the lack of a battery hatch is a trade-off for its 100m water resistance. On balance, owners value the CWC G40 Sonar Quartz Watch for its robust build and classic aesthetic, though its price point and competition are frequently cited concerns.

Sternglas Marus 2.0

Owners widely praise the Sternglas Marus 2.0 for its well-built, heavy case and excellent bezel action, which is considered superior to some competitors. Reviewers note the refined case and luminous dial markers, while the green dial stands out from other divers. The Seiko NH35A movement offers accuracy ranging from -20/+40 seconds per day. One reviewer desired a slightly larger screw-down crown. Overall, owners and reviewers rate the Sternglas Marus 2.0 highly for its robust build and standout dial at its price point.

From video reviewers

The Seiko NH35 automatic movement is a shared strength. Reviewers did not reach a consensus on any weaknesses.

At a glance

11 of 29 specs differ
Diameter
G40 Sonar Quartz Watch40mm
Marus 2.041mm
Power Reserve
G40 Sonar Quartz Watch40h
Marus 2.041h
Water Resistance
G40 Sonar Quartz Watch200m
Marus 2.0200m
MSRP
G40 Sonar Quartz Watch$333
Marus 2.0$593

Full specifications

Case

4 specs
Category
Field
Diver
Diameter
40mm
41mm
Thickness
12mm
14mm
Lug-to-Lug
46mm
49mm

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
CWC G40 Sonar Quartz Watch
Lume
Super-LumiNova
Luminova

Movement

3 specs
Caliber
Seiko TMI NH35
Power Reserve
40h
41h
Jewels
25

Pricing

1 specs
MSRP
$333
$593
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