A new leak has offered the clearest preview yet of Casio’s next square G-Shock built for both workouts and waves. A promotional catalog-style graphic shared by Instagram account @morgan_gshock appears to confirm the Casio G-Shock GBX-H5600-1DR is set for a May 2026 release, and it may be one of the most compelling mashups in the brand’s recent lineup.
What makes the GBX-H5600-1DR so interesting is its blend of two familiar G-Shock directions. It brings surfing-centered G-Lide features into a watch that also carries fitness-tracking hardware typically found in Casio’s training-focused models. In practical terms, this looks like a hybrid concept that sits between the GBX-100 series (known for tide and surf utilities) and the DW-H5600 style of sensor-driven tracking.
According to the leaked graphic, the watch runs on module 3586 and uses a resin case built around Casio’s Carbon Core Guard structure, a design meant to keep the square tough while staying lightweight for daily wear. The pictured version pairs a translucent resin bezel with a black strap, giving it a sporty, modern look that should appeal to both beach use and gym sessions.
One of the biggest highlights is the high-visibility MIP (Memory-in-Pixel) LCD display. MIP screens are valued for sharp contrast and readability, especially when you’re outdoors. That matters here because the watch is expected to show a lot at once, including tide graphs, moon data, and real-time health metrics without turning into a cluttered mess.
The icons shown in the leak also point to a strong set of sensors. The GBX-H5600-1DR is said to include an optical heart rate sensor, a 3-axis accelerometer for step counting and activity tracking, and blood oxygen (SpO2) monitoring. For visibility at night or in low light, it’s listed with a Super Illuminator white LED, and the display is protected by mineral glass.
Power is another key detail. The leaked material indicates the watch is solar powered and uses a rechargeable battery, which suggests the same “hybrid charging” approach seen in recent Casio fitness models. Solar charging should help cover basic timekeeping and lighter daily functions, while higher-drain features like continuous heart rate tracking and Bluetooth connectivity are likely handled via USB charging using a cable included in the box.
The most attention-grabbing confirmation is the “MAY” release tag in the graphic, pointing to a May 2026 launch window and hinting that an official announcement could arrive soon, potentially ahead of an initial release in Japan. Pricing isn’t shown in the leaked asset, so the final cost remains unknown for now.
If the leak is accurate, the Casio G-Shock GBX-H5600-1DR could be a standout option for anyone who wants a tough, square G-Shock that’s equally at home tracking workouts and keeping an eye on surf conditions—without sacrificing the legibility and durability people expect from the brand.
