Key Takeaways
1. Three New Models: Casio launched three new watches in the Master of G series: Gravitymaster GR-B300RY-1A9JF, Mudman GW-9500MRY-1A9JF, and Rangeman GPR-H1000RY-1A9JR, all featuring a “Caution Yellow” design.
2. Gravitymaster Features: The Gravitymaster is designed for aviation and travel, with Bluetooth connectivity, dual-time display, solar charging, and a lightweight resin bezel.
3. Rangeman Capabilities: The Rangeman includes advanced tracking features like GPS, heart rate monitoring, and a six-sensor system for altitude, air pressure, acceleration, and temperature.
4. Mudman Durability: The Mudman is built for tough environments, featuring mud-resistance, Triple Sensor technology, and radio-controlled timekeeping for accuracy.
5. Availability: The watches are currently available in Japan and will launch in other regions, including the US and UK, in the coming months.
Casio has launched three new watches in their Master of G series in Japan, each tailored for various outdoor and professional uses. The models include the Gravitymaster GR-B300RY-1A9JF, Mudman GW-9500MRY-1A9JF, and Rangeman GPR-H1000RY-1A9JR, all featuring a striking “Caution Yellow” color design that emphasizes their durability and functionality.
Watches Tailored for Unique Purposes
Every watch is crafted for a unique function. The Gravitymaster GR-B300RY-1A9JF (¥44,550/~$297) is specifically designed for aviation and travel. It boasts Bluetooth connectivity for syncing time, a dual-time display, and solar charging to ensure long-lasting use. Its resin bezel makes it lightweight, while a shock-resistant design and a bright LED backlight enhance visibility in dim conditions.
Advanced Features for Serious Adventurers
The Rangeman GPR-H1000RY-1A9JR (¥66,330/~$442) comes with sophisticated tracking and monitoring capabilities. This model features GPS, a heart rate monitor, and the ability to measure VO2 max. With its six-sensor system, it keeps tabs on altitude, air pressure, acceleration, and temperature. The MIP LCD display is easier to read outdoors, and solar-assisted charging helps to prolong battery life.
Rugged Design for Challenging Environments
The Mudman GW-9500MRY-1A9JF (¥58,410/~$389) is built for tough conditions. It is designed to be mud-resistant and incorporates Triple Sensor technology, which includes an altimeter, barometer, and compass. Additionally, it features a dual-layer LCD display for improved readability and radio-controlled timekeeping for precise time accuracy.
Where and When to Get Them
These watches are currently available in Japan via Yahoo! Shopping, Amazon Japan, and Rakuten. They are expected to launch in other regions, such as the US and UK, in the upcoming months.



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