Side by side

CWC G40 Sonar Quartz WatchvsSeiko Diamond Collection

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
Diamond Collection
SeikoDiamond Collection
MSRP $525
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.

Seiko Diamond Collection

Owners widely praise the Seiko Diamond Collection for its stunning beauty, particularly highlighting the 14 diamonds and the captivating mother-of-pearl dial. Its 33.2mm case size, 100m water resistance, sapphire crystal, and lightweight build are appreciated features contributing to comfortable wear. Some owners find the dial detail is best appreciated in direct sunlight. The gold plating on some models may show fading from desk work over time. Overall, owners rate the Seiko Diamond Collection highly for its dazzling aesthetics and comfortable, well-finished design at its price point.

At a glance

12 of 29 specs differ
Diameter
G40 Sonar Quartz Watch40mm
Diamond Collection32mm
Power Reserve
G40 Sonar Quartz Watch40h
Diamond Collection40h
Water Resistance
G40 Sonar Quartz Watch200m
Diamond Collection100m
MSRP
G40 Sonar Quartz Watch$333
Diamond Collection$525

Full specifications

Case

6 specs
Category
Field
Dress
Diameter
40mm
32mm
Thickness
46mm
8.2mm
Lug-to-Lug
12mm
39mm
Lug Width
20mm
15mm
Water Resistance
200m
100m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
CWC G40 Sonar Quartz Watch
Black
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
6N32
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$333
$525
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