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MUDMASTER

GG-B100X-1A3

NEW 02/2026
My GShock

For the fearless adventurer and nature lover, a tough and rugged Master of G MUDMASTER featuring bezel and case constructed of heavy duty carbon and environmentally responsible materials. The watches of the G-SHOCK Master of G line, developed for professionals working in the harshest environments, come equipped with even tougher functionality. And the MUDMASTER takes this another step further with the ability to handle the roughest rubble and debris-strewn terrains, earning the appreciation and trust of rangers and rescue teams operating in extreme environments. The MUDMASTER GG-B100X employs high rigidity carbon for the carbon fiber-reinforced case to keep damage and warping at bay and ensure a tight seal and excellent shock resistance. Featuring a filter to protect against mud, a stainless-steel panel back, and a back cover made of shock-resistant fine resin embedded with glass fibers, it provides a high level of resistance to dust and mud. The bezel also uses three layers of fine resin with carbon fiber inserts. The rugged design evokes the gasoline jerrycans mounted to off-road vehicles tough enough to traverse the most challenging terrain. Key components for the case and band are made with bio-based resin. Produced using renewable organic resources, this material is expected to help reduce environmental impact. Practical and functional, the watch is equipped with digital compass, altimeter/barometer, and thermometer, as well as step counter. Easily correct the time using the dedicated app and tap into loads of other useful features including the Mission Log, which automatically records altitude data obtained from the watch and route data obtained by your smartphone. You can depend on this tough timepiece to deliver what you need to make quick decisions and take decisive action.

  • Shock-, dust-, and mud-resistant structure delivered by carbon fiber-reinforced resin * Image shows the GG-B100XM.
  • Carbon fiber-reinforced resin is also used for the cover enclosing the case back
  • Handy smartphone pairing for daily convenience * Image shows the GG-B100XM-1A.
  • Attention to materials: Bio-based resin
  • LED light * Image shows the GG-B100XM-1A.

Specifications

FEATURES

Shock-, dust-, and mud-resistant structure delivered by carbon fiber-reinforced resin

Offering high strength and excellent weather resistance, the carbon fiber-reinforced resin case protects the module. Gaskets are applied around the buttons to ensure a tight seal, providing reliable dust and mud resistance even in harsh environments. Carbon fiber-reinforced resin is also used for the cover enclosing the case back and for the movable parts on the underside of the band, enhancing both durability and wearing comfort.

* Image shows the GG-B100XM-1A.

Direction Measurement Display Image

Digital compass

Altimeter Display Image
Barometric Pressure Measurement Display Image

Altimeter & Barometer

Temperature Measurement Display Image

Thermometer

Step Count Display Image

Step counter

Quad Sensor supporting land missions

In addition to the triple sensor that measures compass bearing, altitude/barometric pressure, and temperature, the watch is equipped with an accelerometer for step counting. By collecting diverse data, the Quad Sensor makes it easy to monitor environmental changes and track activity history, helping ensure reliable performance in land missions under the toughest conditions.

* Image shows the GG-B100XM-1A.

Bio-based resin image of GG-B100X

Bio-based resin

Key resin components used in the case, band and case back are made with bio-based resin.

* Image is included for illustrative purposes.

Smartphone Link Image

Smartphone Link

The watch connects to a smartphone via Bluetooth® to automatically adjust the time. Using the dedicated app, various watch settings and mission logs can be managed with ease.

A photo of GG-B100XM lit up

Super Illuminator

High-brightness auto double LED light improves watch readability in the dark.

* Image shows the GG-B100XM-1A.

*The color tone of the listed products may differ from the actual product in some cases.

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