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| The Casio G-Shock DW-GH5600 has been spotted online |
A new certification listing suggests Casio is preparing a fitness-focused G-Shock that finally combines optical heart rate tracking with radio-controlled timekeeping — a first for the iconic square design.
Casio may be quietly working on a new G-Shock that could appeal to both fitness enthusiasts and traditional watch purists alike. According to a recent discovery by the Japanese publication Great G-Shock World, a previously unknown model number — DW-GH5600 — has appeared in an international certification database in Asia, hinting at an upcoming release that could merge two highly desirable features.
What the Model Number Tells Us
For G-Shock fans who closely follow Casio's naming conventions, the model number itself reveals quite a bit. The "H" in DW-GH5600 likely indicates the presence of an optical heart rate sensor, while the "G" suggests support for Multi Band 6 — Casio's radio-controlled timekeeping system that automatically syncs with atomic clock transmitters in six regions worldwide.
If accurate, this would represent a significant step forward for the square-shaped G-Shock lineup, as these two features have traditionally been kept separate across different models.
Building on the DW-H5600 Legacy
Casio already offers the DW-H5600, a fitness-oriented G-Shock that retains the classic square case design. That model includes an optical heart rate monitor, accelerometer for step tracking, and a memory-in-pixel (MIP) display. It also supports workout tracking, sleep analysis, blood oxygen measurements, and Bluetooth connectivity with Polar-powered software for enhanced fitness insights.
However, the DW-H5600 notably lacks Multi Band 6 functionality. If the DW-GH5600 retains its predecessor's health monitoring capabilities while adding radio-controlled timekeeping, it could offer the best of both worlds — modern fitness tracking combined with the dependable accuracy that traditional G-Shock enthusiasts have come to expect.
What We Still Don't Know
Unfortunately, the certification listing offers limited concrete details. Information regarding the watch's dimensions, materials, battery life, pricing, and release date remains unknown at this time. Given that the original DW-H5600 surfaced in 2023, a revised version launching three years later seems like a reasonable timeline.
The discovery was first reported by the Japanese G-Shock community blog great G-SHOCK world, which continues to monitor certification databases for early indications of upcoming Casio releases.
Why This Matters
For years, G-Shock collectors have debated the trade-offs between fitness features and traditional timekeeping technology. A model that successfully integrates both could satisfy a broad range of users — from athletes who want accurate health metrics to travelers who rely on automatic time adjustment across time zones.
As always, until Casio makes an official announcement, these details should be treated as speculation. But if the DW-GH5600 proves to be real, it could become one of the most compelling square G-Shock releases in recent memory.
Stay tuned for more updates as additional information becomes available.