The Casio G-Shock Mudmaster GWG-B1000-1A3ER is a watch from the Master of G series that is right at home in harsh and adverse natural conditions. It combines a wide range of functions and a modern design, all backed by high durability thanks to the Carbon Core Guard construction.
Its signature durability is paired with a combination of black finishes, an olive-green strap, and sand-colored details inspired by tactical gear. The color scheme is thus not only a striking design element but also underscores the model’s functional character.
Like other models in the Mudmaster series, the Casio G-Shock Mudmaster GWG B1000-1A3 is built for demanding conditions and excels in resistance to mud, dust, shocks, and low temperatures. The Carbon Core Guard case construction combines resin and carbon fiber, complemented by steel components. Special button seals protect the module from mud and dirt penetration. The watch’s resistance to vibrations is ensured byAlpha Gel (αGEL) on the sides and bottom of the module.
The case is complemented by a resin strap that offers excellent durability and a long service life.
The watch offers a wide range of features for outdoor activities— a compass, thermometer, barometer, and altimeter. Information on sunrise and sunset times is also available. The altimeter operates within a range of −700 to 10,000 meters, the barometer measures atmospheric pressure within a range of 260 to 1,100 hPa, and the thermometer measures temperatures ranging from −10 to 60 °C. The watch also allows you to save recorded altitude data and displays a graph showing changes in atmospheric pressure.
You’ll appreciate the watch’s improved position-indication feature, which makes it easier to orient yourself when navigating to a saved location or a selected destination. After connecting to the CASIO WATCHES app, you can set your destination directly on the map. The sub-dial at the 3 o’clock position then shows the direction to the destination, while the second hand points north. The distance to the destination is displayed on the digital screen.
The combined dial also displays basic information such as the date and day of the week, and includes a stopwatch, alarm, and other functions.
The dial is protected by asapphire crystal with an anti-reflective coating. For easy readability in low-light conditions, the watch is equipped with luminescent hands and hour markers, as well as LED lighting that illuminates both the analog and digital portions of the dial when a button is pressed.
The watch’s key features include solar power—which charges the battery using light—a radio-controlled movement, and a smart crown that allows you to switch between functions by rotating and then pressing it. Its lock ensures that the watch does not accidentally switch to a different mode due to an unintended press.
The watch can be paired with a phone via Bluetooth and the CASIO WATCHES app, making it easy to configure individual functions and manage stored data.
With a case diameter of 52.1 mm, this watch is classified as a large model. It is water-resistant to 200 m, so you can swim with it without any problems.
Features:
The Casio G-Shock series offers the perfect watch for anyone looking for a combination of durable, sporty watches with an attractive design and a wide range of features. All models in this globally popular series are more resistant to shocks and impacts than standard models. They also demonstrate increased resistance to magnetic fields.
Reviews and Articles:
Not sure about the size?
See the watch on a wrist
| Brand | Casio |
| Gender | Male |
| Style | Sports |
| Origin | Japanese |
| Guarantee | 5 years |
| Waterproof | 200 m |
| Weight | 114 g |
| Movement | Solar |
| Caliber | 5713 |
| Movement accuracy in seconds | ± 15 s / month (without radio signal reception) |
Power Reserve ![]() |
6 months (24 months in power save mode) |
Stopwatch measurement accuracy ![]() |
1/100 sec. |
| Case size | 52,1 mm |
Lug-to-lug: ![]() |
58,7 mm |
| Case height | 16,2 mm |
| Case shape | Round |
| Case material | Karbon, Epoxidová pryskyřice |
| Case color | Black |
| Crystal material | Sapphire - anti-reflective |
| Dial | Combined |
| Dial color | Black |
| Strap material | Resin |
Buckle ![]() |
Tang Buckle |
| Strap color | Green |
Alarm clock ![]() |
Yes |
| Date | Yes |
Dual time ![]() |
Yes |
Compass ![]() |
Yes |
| Backlight | Yes |
| GPS / Radio Controlled | Radio |
Stopwatch ![]() |
Yes |
Day of the week indicator ![]() |
Yes |
Power reserve indicator ![]() |
Yes |
| Functions | Date, Day of the week, Stopwatch, Compass, Alarm clock, Screw-on crown, Backlight, Radio controlled, Bluetooth, Thermometer, Altimeter, Barometer, Automatic calendar, Dual time / GMT, World times, Vibration resistance |
Accumulator ![]() |
Yes |
Screw-on Crown ![]() |
Yes |
Luminescence ![]() |
Hands and indexes |
| Other functions | Countdown, World time, Automatic LED light, 12/24 mode, Automatic calendar, Thermometer, Compass, Barometer, Altimeter, Low battery indication, Location indicator and recording option, Sunrise and sunset times |
We guarantee the accuracy of the data. Did you find a mistake? Let us know and get 8 EUR on Watch purchase.
Guarantor: Kateřina Žváček
Jiří Štencek
+420 252 252 306
Mo-Th 9-19
Fr-Sa 9-16
info@helveti.eu
The product is included in categories
Men's watches with stopwatch Men's Japanese watch Men's sports watches Men's watches with date Men’s Watches Casio Men’s watches Casio G-Shock Men's black watches Men's solar watches Men's watches with alarm Men's watches novelties Men's watches over 400 EUR Men’s watches Casio Mudmaster Mudmaster Men's radio-controlled watches Men's plastic watch Men's watches with GMT (second time zone) Men's watches with altimeter Men's watches with thermometer Men's watches with bluetooth Men's durable watches Men's watches with sapphire crystal Watch gift for men Casio Men's green watches
Casio, Japan is one of the best-selling watch brands in the world. The first watches from the Casia workshop were digital and at the same time the first in the world to display the date. Casio's digital watches are no longer popular today, although analog watches or watches with a combined time display already form a large part of the range.
Casio has made history with its range of super-durable G-Shock watches, which are equipped with a light but sufficiently durable construction (against falls of up to 10 m, shocks, vibrations, magnetic field and temperature fluctuations) and a great value for money. The glory of the G-Shock watch over time also required a lightweight women's version - Baby-G. The Casio Pro Trek or Casio Edifice outdoor watches are also very popular. Casio does not lag behind in modern technology either, as evidenced by models equipped with Bluetooth technology, the Tough Solar solar drive or the high-precision radio-controlled Wave Ceptor watch.
Helveti.eu is an authorized dealer and specialist of the Casio brand.
Manufacturer information: CASIO Europe GmbH, Casio-Platz 1 D-22848 Norderstedt, Germany / info@casio.de
Do you have a question? Leave us a comment
Add a query
1 → We check, clean and set
We will check the functionality, set time, date and clean the watch carefully.
2 → We will carefully pack the watch
So that the watch does not have a chance to be damaged. We use special vacuum pads.
3 → We insure the watch against damage from the carrier
To be sure, we will insure the watch against breakage, so there is nothing to fear.
With each watch, you will receive a gift of your choice from us. Gifts are graduated according to the value of the order.
From €0 = Cleaning cloth, with which you can polish the glass of a watch.
From €100 = Stroke shortener, you can adjust the watch bracelet to your hand.
From €150 = Helveti canvas bag.
From €150 = Credit card knife.
From €170 = Donut watch case.
From €400 = Parker Jotter.
From €600 = knife Mikov 100-NH-2A blue.
From €1000 = Victorinox Waiter knife with 9 functions.
From €1400 = Watchroll for 2pcs.
From €1650 = Helveti leather watch roll.
From €2000 = Leather travel case.
From €2800 = Leatherman REV.
From €4000 = Wooden watch box Helveti.
From €6000 = Watch winder Helveti black.
And on top of that, a 5-year warranty (You can find the terms of the extended warranty here) and free shipping.
You can view the gifts here: