Key Takeaways
1. Casio is developing a new G-Shock line, the GBX-H5600, featuring advanced heart rate tracking.
2. The watch design is square, inspired by the G-Shock GBX-100, and prominently displays “Heart Rate” on the dial.
3. Two variants are leaked: GBX-H5600-1 (black) and GBX-H5600-2 (blue), both featuring translucent dials and water-sport suitability.
4. Expected features include optical heart rate monitoring, step counting, sleep analysis, multi-sport modes, and Bluetooth connectivity.
5. The GBX-H5600 may launch in Spring or Summer 2026, with official announcements likely soon.
It’s well known that Casio is developing a new G-Shock line that includes advanced heart rate tracking features. The first information about the GBX-H5600 came to light in October, when it was certified by a Chinese regulatory agency, CMIIT. Later, in January, another leak suggested that Casio might target a release in the spring or summer for this new fitness-oriented watch. Recently, leaked images of the G-Shock GBX-H5600-1 and GBX-H5600-2 have emerged, providing us with a first glimpse of a design that mixes surf-inspired G-Lide looks with comprehensive G-Squad fitness tracking.
Design Insights
The images, shared by Casioblog, showcase a distinctly square watch that takes heavy inspiration from the Casio G-Shock GBX-100, featuring its MIP display, signature font, and tide graph design. One notable feature is the clear labeling at the top of the dial that reads “Heart Rate.” This indicates that the GBX-H5600 likely incorporates the fitness technology from the Casio G-Shock DW-H5600 (currently priced at $268 on Amazon).
Variants and Features
The leaked images reveal two versions: the black GBX-H5600-1 and the blue GBX-H5600-2, both of which come with translucent dials and cases. The G-LIDE logo can be seen on the strap, hinting at its potential for water sports.
Considering the blend of the GBX-100 and DW-H5600, we can anticipate that these new watches will include features such as an optical heart rate monitor, step counting, calorie tracking, pace and distance measures, sleep analysis, tide graphs, and moon phase display. They will also likely support multiple sport modes like running, cycling, swimming, and strength workouts. Additionally, Bluetooth capabilities should allow for smartphone notifications and enable the watch to utilize your phone’s GPS for more precise distance tracking. There are expectations for solar charging, and there’s also hope that wired USB charging will be included too.
Future Expectations
If these leaks are accurate, the GBX-H5600 would significantly expand Casio’s range of square watches with heart rate capabilities. With certifications already secured and previous leaks pointing to a Spring or Summer 2026 launch, it seems that an official announcement could be imminent.
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