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GST-B300 Series


My GShock

A model with a rugged style based on a G-STEEL model that uses the carbon core guard structure from G-SHOCK, which continues to evolve in the pursuit of toughness. A model covered with a rugged and playful design typical of G-SHOCK, with a disc dial that shows the current function mode and remaining charge at the 6 o'clock position, and ruggedly designed front button. Additionally, the round digital graphic at the 1 to 2 o'clock position, which is asymmetrical with the disc dial, achieves both functionality and design, together with the digital LCD at the 12 o'clock position. A model that uses a ruggedly designed resin band in pursuit of the classic G-STEEL functional beauty from G-SHOCK.


Technology /

Carbon Core Guard Structure

Carbon Core Guard Structure

Bezel & Front Button

Bezel & Front Button

Tought Solar

Tough Solar

Resin band

Resin band

G-SHOCK Connected

G-SHOCK Connected FREE

Smartphone App


- Automatic time adjustment*
- World Time for over 300 cities*
- Alarm/Timer setting
- Phone Finder

* Updating of internal data according to the latest time zone/ daylight saving time information

* App screens shown here may differ from actual screens, 
since the app is currently under development.

* The Bluetooth® wordmark and logo are registered trademarks of Bluetooth SIG, Inc. and any use of these marks by Casio Computer Co., Ltd. is under license.
* Apple, Apple logo and iPhone are trademark of Apple Inc. registered in the United States and other countries. App Store is a service mark of Apple Inc.
* IOS is a trademark or registered trademark of Cisco Systems, Inc. registered in the U.S.
* Google Play and the Google Play logo are trademarks of Google LLC.
* All other company and product names are trademarks or registered trademarks of their respective owners.
List of Countries and Geographic Areas where Product Conforms to Radio Laws or Has Been Approved.


*The color tone of the listed products may differ from the actual product in some cases.

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