Three new versions of the Casio G-Shock Mudmaster GG-B100X are now released in the UK. The models were announced earlier in Feb-25 as part of a wider five version series.
The watches come with four sensors including digital compass and thermometer, as well as offer Bluetooth connectivity.
The three variants, GG-B100X-1A, GG-B100X-1A3, and GG-B100X-1A9 can be purchased from the Casio UK website for £349 each. These are also expected to be launched in other EU markets in the coming future.
GG-B100 is equipped with a digital compass, thermometer, step counter and barometer/altimeter. This is in addition to the other basic features such as stopwatch, alarms and timers. The GG-B100 also uses Bluetooth to connect with tools in the Casio Watches smartphone app.
As a ‘Mudmaster’, the model is shock and mud-resistant, coming with 200 m water resistance. The watch is made of carbon fiber casing, metal bezel and resin strap. The three different variants come with a black, khakhi and orange resin straps.

Mudmaster? What does that mean?
The Casio ‘Mudmaster’ is a rugged wristwatch line from Casio’s G-SHOCK “Master of G” collection, built for extremely harsh land and outdoor conditions. It’s designed to withstand mud, dust, shocks, vibrations, and water being an ideal watch for outdoor adventurers, off-road explorers, rescue workers, and anyone needing serious durability.
‘Mudmasters’ usually come with the following features –
- Mud- and dust-resistant structure to prevent particles from entering the case.
- Shock-resistant performance based on G-SHOCK’s legendary robustness.
- 20-bar (200 m) water resistance making it safe for swimming and other wet environments.
- Multiple sensors for compass, barometer/altimeter, and thermometer etc, essential for navigation and weather awareness.
- World time, alarms, stopwatch, and countdown timer making it handy for travel and missions.


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