Casio G-Shock MASTER OF G-LAND MUDMASTER GG-B100X-1A3ER

Built for fearless explorers and lovers of the great outdoors, the Master of G MUDMASTER is a tough, rugged timepiece engineered for extreme conditions. Featuring a bezel and case made from high-strength carbon and environmentally responsible materials, it delivers uncompromising durability where it matters most.

Part of the G-SHOCK Master of G range, developed for professionals operating in the harshest environments, the MUDMASTER raises the bar even further. Designed to withstand the most demanding on-land conditions, it has earned the confidence of rangers and rescue teams working in extreme terrain.

The GG-B100 MUDMASTER uses a high-rigidity carbon case to minimise damage and distortion, while ensuring exceptional airtightness and shock resistance. A mud-resistant filter structure, stainless steel case back, and shock-resistant resin back cover reinforced with glass fibres provide outstanding protection against dust and mud. The bezel incorporates a three-layer resin construction with carbon fibre inserts, while the rugged design takes inspiration from the fuel jerrycans found on off-road vehicles built to conquer the toughest landscapes. Key resin components in the case and band are made from bio-based resin derived from renewable resources, helping to reduce environmental impact.

Designed with practicality at its core, the watch is equipped with a digital compass, altimeter/barometer, thermometer and step counter. Time can be easily adjusted via the CASIO WATCHES app, which also unlocks useful features such as Mission Log. This function automatically records altitude data from the watch and route data from your smartphone.

 When conditions are at their toughest and decisions matter most, the MUDMASTER is a dependable tool you can trust to perform.