Mysterious Casio G-Shock Frogman GWF-300 Appears in Certification Listing
A previously unknown Casio G-Shock Frogman model appears to be on the way, and early signs suggest it could be an exciting new addition to the legendary dive-watch lineup. The watch, listed under the model number GWF-300, has surfaced in an international certification database, hinting that Casio may be preparing a fresh Frogman release.
The listing was found in Indonesia’s official DJID/KOMDIGI e-Sertifikasi NextGen database, where the GWF-300 was registered on September 3, 2026. Casio has not yet officially announced the watch, so details remain limited. However, the certification does reveal one important piece of information: the GWF-300 is expected to be manufactured in Japan.
Its appearance in a certification database also strongly suggests that the watch includes wireless connectivity. While the exact features have not been confirmed, Bluetooth support seems likely. That would allow the new G-Shock Frogman to connect with a smartphone for functions such as automatic time adjustment, world time settings, and easier configuration through Casio’s companion app.
What makes the GWF-300 especially interesting is its model number. Many of Casio’s recent high-end Master of G watches use four-digit references, such as the premium Mudmaster models. A three-digit reference like GWF-300 may indicate that this upcoming Frogman could sit below the most advanced and feature-packed versions in the lineup, potentially offering a more accessible alternative while still keeping the rugged identity of the Frogman series.
The model name also raises another question. Modern G-Shock watches with Bluetooth usually include the letter “B” in the model number, yet GWF-300 does not. That makes this listing even more unusual. If Bluetooth is included, Casio may be using a different naming approach for this model, or the GWF-300 could represent a special direction within the Frogman family.
There is also speculation that the GWF-300 may be a modern spiritual successor to the iconic GW-200. Released in 2001, the GW-200 was the fourth-generation Frogman and became known for combining the series’ signature asymmetric case design with Tough Solar charging. If Casio is revisiting that formula, the GWF-300 could bring the classic Frogman personality into the modern era with updated materials, improved durability, and smartphone-connected features.
For now, the design, size, display type, water resistance rating, sensor package, battery details, and release date remain unknown. Still, the certification listing is a strong sign that the Casio G-Shock Frogman GWF-300 is real and could be moving closer to an official launch.
If the watch does arrive as a lower-positioned yet Japan-made Frogman with Tough Solar and Bluetooth connectivity, it could attract both longtime G-Shock collectors and new buyers looking for a durable, professional-style digital dive watch. The Frogman line has always been one of Casio’s most respected collections, and the GWF-300 may become one of the most talked-about upcoming G-Shock releases if it successfully blends classic design with modern everyday convenience.
