Watches - Casio Support Page

September 2, 2021 - To users of G-SHOCK GW-B5600
The IC Certification Number listed in the case back of certain GW-B5600 G-SHOCK products may contain an error:

Error IC:23888-S0DW

Correction IC:2388B-S0DW

GW-B5600 otherwise complies with applicable Canadian radio standards and is certified for use in Canada. Newly manufactured GW-B5600 units will bear the correct IC Certification Number going forward.

Important Notification

December 12, 2019 To Users of the "G-SHOCK+" Dedicated G-SHOCK App
Thank you for using a Casio "GB Series" Bluetooth watch.
The "G-SHOCK+" dedicated G-SHOCK app has been supported as an application for linking with smartphones since the GB Series watches were released. However, support for both the OS and for smartphones will end as of May 29, 2020.

Also, while you can continue using your currently installed app, changes to the specifications of your OS or smartphone may result in your app becoming unusable without advance notice.

Affected watch models:
GB-5600B, GB-X6900B, GB-6900B, GB-5600AA/AB, GB-6900AA/AB, GBA-400

[GBA-400 Users]
With the termination of support for the "G-SHOCK+" app, the new "GBA-400+" app will be released as a GBA-400 application for linking with smartphones. The "GBA-400+" app also replaces the current dedicated "G'MIX" app for functions such as controlling the music player. The new app will link with your standard Smartphone music player so that you can control it from your watch. (Following the release of the "GBA-400+" app, "G'MIX" will no longer be available as a download from the app market.)