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MUDMASTER

GG-B100XMB-1A

NEW 02/2026
My GShock

For the fearless adventurer, a tough and rugged Master of G MUDMASTER featuring a strong, durable metal bezel. 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 GG-B100XM-1ADR features a silvery stainless-steel bezel with a honing finish, delivering outstanding scratch resistance that protects against mud and dust and a subtle matte texture that minimizes reflected light. The stainless-steel GG-B100XMB-1ADR bezel is ion-plated in black with a mirror finish for both outstanding scratch resistance and a refined luster. These MUDMASTER employ 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, these timepieces provide a high level of resistance to dust and mud. 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 watches are 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 these tough timepieces to deliver what you need to make quick decisions and take decisive action.

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

Specifications

FEATURES

Image of a stainless steel bezel with a meticulously finished surface showcasing outstanding sculptural beauty

Stainless steel bezel: Refined craftsmanship highlighting the aesthetics of practical elegance

As a defining element of the toughness-oriented design, the bezel conveys a strong presence. Made with stainless steel, its complex form of multiple surfaces and contours is shaped through forging. The top surface, beveled edges, and sides are each finished with different polishing techniques.
The GG-B100XM employs a silver-colored bezel with a honed matte finish that enhances resistance to mud and dust while reducing light reflection, giving it a calm, subdued texture. The GG-B100XMB features a black ion-plated bezel with mirror polishing, combining high scratch resistance with a refined metallic sheen.

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.

Bio-based resin image of GG-B100XM

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.

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

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