Side by side

CWC G40 Sonar Quartz WatchvsMaen Mahjong 36

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

The bottom line

The 36mm Mahjong 36 wears 4mm narrower than the 40mm G40 Sonar Quartz Watch — that's a meaningful jump on most wrists.

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.

Maen Mahjong 36

Owners widely appreciate the Maen Mahjong 36 for its quality and wearability, with some finding the green sunburst dial a subtle and fitting homage to its theme and the price reasonable. However, a segment of the community finds the design too understated for its thematic inspiration, preferring a more pronounced lacquered dial. On balance, owners rate the Maen Mahjong 36 highly for its impressive quality and wearability at its price point.

Where to get them

Check prices & track

CWC G40 Sonar Quartz Watch
CWC G40 Sonar Quartz Watch
MSRP $333
Maen Mahjong 36
Maen Mahjong 36
MSRP $899
G40 Sonar Quartz Watch
CWCG40 Sonar Quartz Watch
MSRP $333
Mahjong 36
MaenMahjong 36
MSRP $899

At a glance

13 of 29 specs differ
Diameter
G40 Sonar Quartz Watch40mm
Mahjong 3636mm
Power Reserve
G40 Sonar Quartz Watch40h
Mahjong 3640h
Water Resistance
G40 Sonar Quartz Watch200m
Mahjong 3650m
MSRP
G40 Sonar Quartz Watch$333
Mahjong 36$899

Full specifications

Case

7 specs
Category
Field
Dress
Diameter
40mm
36mm
Thickness
12mm
11.1mm
Lug-to-Lug
46mm
Lug Width
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
50m

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
CWC G40 Sonar Quartz Watch
MHV.03
Lume
Super-LumiNova
None

Movement

1 specs
Caliber
Miyota 9122

Pricing

1 specs
MSRP
$333
$899

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