Last Updated:  October 15th, 2020

Casio G-Shock Mudmaster GGB100 Review

Casio G-Shock Mudmaster GGB100-1A

The Casio G-Shock Mudmaster GGB100 is your next-level G-Shock that has more features than you can imagine and can survive almost anything you can throw at it.

Starting with the standard G-Shock 200m water resistance and built-in shock resistance, Casio have added mud resistance via extra seals on all those important areas. The shock resistance is also above and beyond with the Core Guard carbon fiber technology.

There is also a Quad Sensor which means Altimeter/Barometer, Thermometer, Accelerometer (step counting) and Digital Compass. All the things a great outdoor lover or someone in the military needs!

Casio have also added bluetooth so you can connect to their app and configure your Mudmaster watch with ease!

Casio G-Shock GGB100 Features

The Casio G-Shock GG-B100 Mudmaster is packed full of features, some of which you won’t find on many other G-Shocks:

  • Japanese Quartz
  • Domed Mineral crystal glass
  • Core Guard Carbon Fiber/Resin Case & Resin Band
  • Quad Sensor: Altimeter/Barometer, Thermometer, Digital Compass, Accelerometer
  • EL backlight, Bluetooth connectivity 
  • Stopwatch, countdown timer, 5 alarms, hourly signal, calendar, 12/24hr time, 
  • 200m / 660ft water resistance & shock-resistance
  • Case size: 53.3 × 54 × 18.7mm
  • Weight: 92g

The Mudmaster Dial

I love how clean and organiszed Casio have made this Mudmaster model. Sure, it is still packed wull of information and markers, but with only one digital screen on the bottom, it makes things a lot easier to deal with. 

The hour markers are large and clear, with Arabic numerals every 3 hours, which is handy.The minute markers are less useful, but then again, given you have a stopwatch etc. in the digital part, it’s not really an issue for accurate time-keeping.

They have also added some nice red accents on the Mudmaster label as well as around the top indicator and the second hard, which is tipped with lume. All the hands are actually well-lumed and easy to read in the dark. There is also an Illuminator for the whole dial to charge it and see the digital part in the dark.

The Mudmaster Case & Bezel

The G-Shock Mudmaster is always going to be big in every way. It has two casebacks to start with. The inner steel, and the outer part of the Core Guard structure using Casio’s carbon/resin mix. 

The Bezel has an alternating black protection with the carbon gray pattern on the bezel itself. This really sets the tone of the style of the GGB100.

The buttons are well knurled for grip and easy to use, they are also well sealed using Mudmaster’s extra mud resistant seals. There are two extra-large and notable buttons – one at 3 o’clock for connecting via bluetooth. The other at 6 o’clock to operate the illumination!

The case has high and thick outer protection, part of which is secured with screwed in guards which add to the tough look of this watch.

The Mudmaster Smartphone App

There is only so much you can do with s tiny screen on your watch, so Casio has added loads of functionality for the GGB100 Mudmaster in the G-Shock App.

Most of the functions are using the GPS on your phone and extend the quad sensor functions built-in to the watch. The app also helps to log the data you are collecting and display it in an easier to see way.

Here is a quick list of the functions:

  • Mission Control Log
  • Step counter / Calorimeter
  • Location indicator including maps & path logging
  • Automatic time adjustment (from the phone time – to the watch)
  • Mode control
  • World Time setting (300 cities)
Some of the functions pair with the phone itself like the location indicator which the compass can take over and point to (via the second hand on the watch). They really work well as a pair adding to and complementing one another as a team!

Casio G-Shock GGB100 Colors

The G-Shock GGB100 Mudmaster has a variety of colors available, three of which are displayed below.

Casio GGB100-1A3 Master of G Mudmaster Men's Watch Green 55mm Carbon

G-Shock Mudmaster GGB100-1A3

G-Shock GGB100-1B Black One Size

G-Shock Mudmaster GGB100-1A3

Casio GGB100-1A9 Mudmaster Men's Watch Orange 55.4mm Carbon/Resin

G-Shock Mudmaster GGB100-1A9

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