Side by side

Casio GMD-B300vsCWC G40 Sonar Quartz Watch

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

Add a watch
GMD-B300
CasioGMD-B300
MSRP $135
See the full GMD-B300
G40 Sonar Quartz Watch
CWCG40 Sonar Quartz Watch
MSRP $333
See the full G40 Sonar Quartz Watch
Buy from Casio ↗
Buy used on eBay ↗

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

Buy from CWC ↗
Buy used on eBay ↗

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

At a glance

14 of 29 specs differ
Diameter
GMD-B30043.8mm
G40 Sonar Quartz Watch40mm
Power Reserve
GMD-B300—
G40 Sonar Quartz Watch—
Water Resistance
GMD-B300200m
G40 Sonar Quartz Watch200m
MSRP
GMD-B300$135
G40 Sonar Quartz Watch$333

Full specifications

Case

7 specs
Category
Sport
Field
Diameter
43.8mm
40mm
Thickness
12mm
46mm
Lug-to-Lug
46.4mm
12mm
Lug Width
—
20mm
Material
Resin / Bio-based resin
Stainless Steel
Finish
—
—

Crystal & Dial

4 specs
Crystal
Mineral
Sapphire
AR Coating
No
Yes
Dial Color
Black
CWC G40 Sonar Quartz Watch
Lume
None
Super-LumiNova

Movement

2 specs
Caliber
—
—
Power Reserve
—
0h

Pricing

1 specs
MSRP
$135
$333
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Bertucci A-4T Super Yankee Illuminated
Bertuccimicro

A-4T Super Yankee Illuminated

Ref. 13481
44mm·Quartz
$595MSRP
—Used
Praesidus DD-45
Praesidusmicro

DD-45

3 variantsDD-45
40mm·Quartz·100m WR
$299MSRP
—Used
Bertucci A-4T Super Yankee
Bertuccimicro
Super Yankee

A-4T Super Yankee

Ref. 13478
44mm·Quartz
$295MSRP
—Used
Praesidus A-11 Origin
Praesidusmicro

A-11 Origin

9 watches · 25 variantsA-11
40mm·Quartz·100m WR
$195MSRP
—Used
Citizen Mickey Mouse
Citizen
CitizenDisney Collection

Mickey Mouse

9 watches · 10 variantsDisney Collection
43mm·Solar·100m WR
$237MSRP
—Used
Boldr Venture Velo
Boldrmicro

Venture Velo

2 variantsSeries
41mm·Quartz·200m WR
$399MSRP
—Used
Citizen Garrison
Citizen
Eco-Drive

Garrison

5 watches · 6 variantsGarrison
43mm·Solar·100m WR
$244MSRP
—Used
Hemel HF1 Snelway
Hemelmicro
Snelway

HF1 Snelway

6 variantsSnelway
40mm·Quartz·100m WR
$200MSRP
—Used
All alternatives to the GMD-B300 →All alternatives to the G40 Sonar Quartz Watch →
Explore the full catalog

Follow this matchup

Get a note when Casio GMD-B300 vs CWC G40 Sonar Quartz Watch gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

CWC G40 Sonar Quartz WatchvsElliot Brown HOLTON: 101-001CWC G40 Sonar Quartz WatchvsRoskopf HurricaneCWC G40 Sonar Quartz WatchvsJorg Gray Watches JG8400CWC G40 Sonar Quartz WatchvsElliot Brown HOLTON: Land Rover x ElliotCasio GMD-B300vsPraesidus DD-45Casio GMD-B300vsDepancel Allure Mono Eye
Edit this comparisonAdd another watchExplore more 39–45mm watches