A twist of the wrist in weak light conditions automatically lights up the display backlight.
Shock-resistant
Shock-resistant construction protects against impact and vibration.
Mud-resistant case
Dirt- and mud-resistant construction keeps mud and dirt from getting into the watch.
Vibration-resistant
AlphaGEL elements surround the watch, making it even more resistant to shocks and vibrations. AlphaGEL is a silicone material. It is extremely flexible and has a cushioning effect on the module.
Solar Power
A solar cell provides power for operation.
Radio signal reception (EU, USA, Japan, China)
Whether in Europe, North America and Japan or in the outer reaches of Canada, Central America and China - once the watch has been set to the local time, it receives the relevant signal and shows the correct time wherever you are. In many countries, it also sets itself automatically to summer and winter time.
Neo-display
A luminous coating provides long-term illumination in the dark after only a short exposure to light.
Barometer (260 / 1.100 hPa)
A special sensor measures the air pressure (measuring range: 260/1100 hPa) and presents this on the display in the form of a symbol. This enables early detection of weather trends.
Thermometer (-10°C / +60°C)
A sensor measures the ambient temperature around the watch and displays it in °C (-10°C /+60°C).
Digital-compass
A built-in direction sensor detecs the magnetic north.
10 000 m altimeter
A pressure sensor detects changes in the air pressure and converts the result into an altitude up to 10 000 m.
Height Gain
The height gain sums all the meters you have climbed in a session, so that you can see at a glance the total ascent on a tour.
Altimeter data memory
Depending on the model, up to 40 sets of elevation data can be stored in the watch's data memory and re-accessed at any time. Each of these data sets consists of a measured altitude as well as the date and time. In addition to the individual altitudes, the maximum and minimum altitudes during a measurement are also stored.
World time function
Displays the current time in major cities and specific areas around the world.
Stopwatch function - 1/100 sec. - 24 hours
Accuracy of measurement up to 1/100 of a second, measuring range up to 24 hours.
Timer - 1/1 min. - 1 hour
For fans of precision: the countdown timers help you to remember specific or recurring events by giving off an audible signal at a preset time. The time can be set to the nearest minute and up to 1 hour in advance. This model has three independent timers - ideal for people who need to take medicines every day or those who do interval training.
5 daily alarms
The daily alarm reminds you about recurring events with an acoustic signal at the time you have set. This model has 5 independent alarms for flexible reminders of important appointments.
Automatic hand adjustment
The automatic hand adjustment function checks the home position of the hands every hour and corrects it if necessary — either by adjusting e.g. from shocks or using the influence of magnetism.
Button tones on/off
The button tones for using the mode button can be turned off. This means that the watch no longer beeps when switching from one function to another. Preset alarm or countdown timers remain active when the button tones are deactivated.
Hand Moving Function
With a push of a button, hands are moving and permit a free visibility of functions like stopwatch or date.
Crown button lock
Secures the crown button from accidental change to another mode of operation.
Smart Access Technology
Smart Access makes it easy to operate CASIO’s watches. Pulling out and rotating the crown provides intuitive control over various functions.
Automatic calendar with Date, Day and Month
Once set, the automatic calendar always displays the correct date.
12/24-hour timekeeping
Times can be displayed in either a 12-hour or 24-hour format.
Sapphire crystal
Artificially manufactured glass with the highest hardness and scratch resistance.
Carbon-reinforced resin casing
Thanks to its extremely high level of durability, resin is the ideal material for watches. Combining resin with carbon—a particularly robust material—creates a casing that is even more stress-resistant and offers even greater protection against external influences, resulting in an extremely high level of durability.
Resin band
Synthetic resin is the ideal material for wrist straps thanks to its extremely durable and flexible properties.
Folding clasp
The watch has a folding clasp.
Battery level indicator
An indicator shows the current battery level.
Water resistance classification (20 bar)
Perfect for free diving without scuba gear: the watch is water resistant up to 20 bar according to ISO 22810.
What’s in the box?
3-year warranty
User manual
Warranty card
Casio box
Reviews about G-SHOCK Master of G Mudmaster Carbon Core Guard GWG-2000-1A5ER (9)
For me, as a die-hard fan of this series, the new Mudmaster is the absolute pinnacle of engineering and the king of the Master of G collection. Its main selling point—which completely outclasses the competition—is Wave Ceptor technology, or radio-controlled time synchronization. Knowing that the watch automatically connects to transmitters and adjusts its time to the atomic clock down to the second is simply wonderful for an enthusiast of flawless precision.
Lutek
5/2/26
100%
A sturdy watch with highly durable sapphire crystal. The design is inspired by iconic Casio models. The shopping experience was smooth, and the customer service over the phone was excellent.
Aviomaniac
4/13/26
100%
The watch has a matte black carbon case. The store offers a variety of payment options.
KubaB#7
3/11/26
100%
If you're looking for gear that can withstand anything, the Mudmaster GWG-2000 is in a league of its own. What immediately catches the eye is the carbon texture on the case—it looks amazing in direct sunlight, and you can instantly tell this is a top-of-the-line Master of G model. Although the watch is massive, thanks to the Carbon Core Guard, it doesn’t feel as heavy on the wrist as its size might suggest. For me, solar power is key. You forget about batteries, expose it to light, and you can be sure that you won’t be greeted by a blank display in the morning. The sapphire crystal is another story—in a watch like this, it’s essential, because you don’t have to worry about every accidental scrape against a rock or wall. Radio synchronization works flawlessly, so the second hand is always in sync with atomic time. If you’re out in the field, you’ll also appreciate how the buttons feel under your fingers—they’re so well-sealed that no mud or dust will block them. It’s simply an armored workhorse that looks incredibly sleek on your wrist.
SJ.
2/23/26
100%
I'm pleasantly surprised by its durability and solid construction; the product seems indestructible.
Ojciec Goirot
1/5/26
100%
The perfect product
Młody
1/4/26
100%
I bought this model based on other customers' reviews, and I'm very satisfied. This watch has a sturdy, matte black carbon case, which gives it a modern and durable look. It’s comfortable to wear and works well for everyday use. The store met my expectations with fast shipping and professional service. I definitely recommend this product to anyone looking for a durable watch.
lolek
11/25/25
100%
I received this watch as a gift. It looks very sturdy and is exceptionally durable. The sapphire crystal is impressively durable and provides excellent scratch resistance. The watch works perfectly for everyday use and during physical activities. I am very satisfied with the quality of the product.
Epic
7/6/22
100%
The watch’s build quality and attention to detail are masterful. Its functionality is top-notch. It looks absolutely stunning on the wrist. I highly recommend this model to everyone. After all, having “Master” in the name comes with certain expectations :)
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The administrator of your personal data is the owner of the Watchard store, i.e. 57 Concepts Sp. z o.o. Sp. k. with the registered office at al. Witosa 31, lok. 115, 00-710 Warsaw, Poland. Providing personal data by the Customer is voluntary but necessary to complete the purchase. You have the right to view your personal data we have processed, as well as the right to request changes or removal of your personal data. Personal data will be processed for a period of 10 years.
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The administrator of your personal data is the owner of the Watchard store, i.e. 57 Concepts Sp. z o.o. Sp. k. with the registered office at al. Witosa 31, lok. 115, 00-710 Warsaw, Poland. Providing personal data by the Customer is voluntary but necessary to complete the purchase. You have the right to view your personal data we have processed, as well as the right to request changes or removal of your personal data. Personal data will be processed for a period of 10 years.
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