Casio has expanded its lineup of rugged wristwatches, introducing the Master of G collection—designed for professionals working in extreme conditions. Each of the three new models features a unique design and functionality while maintaining Casio’s signature durability and Caution Yellow color scheme, which symbolizes hazard warnings.

Casio GR-B300RY-1A9JF (Gravitymaster) – $297

Designed for pilots, this model from the Gravitymaster series is built to withstand shocks, vibrations, and centrifugal force. It connects to smartphones via Bluetooth for time synchronization and features solar charging, LED backlighting, and dual time zone display.

Casio GPR-H1000RY-1A9JR (Rangeman) – $442

Part of the Rangeman series, this model is built for harsh environments. In addition to high durability, it includes a GPS module, pedometer, altimeter, barometer, heart rate monitor, thermometer, and other advanced sensors. These extra features contribute to its higher price.

Casio GW-9500MRY-1A9JF (Mudman) – $389

Aimed at travelers and professionals working in extreme conditions, the Mudman model features dust and dirt resistance and is equipped with an altimeter, compass, and barometer. It also includes a dual-layer display for improved readability and radio-controlled time adjustment using an atomic clock signal.

All three models are already available in Japan and are expected to launch in other markets soon.