Male watches Casio G-Shock GG-B100-1A3ER Mudmaster

Casio G-Shock Mudmaster GG-B100-1A3ER is a watch that feels at home in harsh and adverse natural conditions, offering its owners a large number of functions, modern design, all backed by high durability supported by a new case construction.

Casio G-Shock Mudmaster GG B100-1A3 comes, as we are used to with the series, with workmanship thanks to which the watch will stand up even in the toughest conditions. They stand out with resistance to water, mud, dust, low temperatures and shocks. High durability is ensured by the new Carbon Core Guard case construction. It is made of resin, reinforced and strengthened with carbon fibres; for increased resistance, metal buttons with a membrane are newly used, protecting the model against the ingress of dirt. Everything is completed by a double-layer case back - the classic steel one is covered by a resin one reinforced with glass fibres, which takes shock resistance a step further. The new construction allows a more compact and lighter whole to be created. The manufacturer acknowledges the use of carbon not only in the name of the series, but also on the watch itself, where the carbon bezel is covered by a transparent layer of resin.
These Mudmasters are equipped with a set of four sensors, the so-called Quad sensor, including basic functions important for staying in nature - compass, altimeter, barometer, thermometer, and a step counter has also been newly added. The watch has a combined, analogue and digital dial, which displays the date, day of the week, stopwatch, alarm and many other functions that you will use especially in nature, including for example a compass showing magnetic north, a thermometer measuring in the range -10 - 60°C, sunrise and sunset times and information associated with the use of these functions. Not to be overlooked is the option to synchronise the watch with a smartphone via Bluetooth technology. The connection, together with the use of the relevant mobile application, makes it possible to keep constantly up-to-date and accurate time under control, offers the option of easy setting of dual time by selecting one of 38 time zones, setting a daily alarm, etc., but also displays data on calories burned, an activity log, where when activated information about the route and its profile is automatically stored, which can then be displayed on a map. Thanks to this function, you can also easily document the activity using photographs that are automatically assigned to it. Worth mentioning is also the location indicator, thanks to which you can see the direction and distance to a previously saved point, for example the starting point.
The composite case of the watch is complemented by a rubber strap featuring high durability and long service life; thanks to the materials used, the watch achieves a pleasant weight of only 92 grams. The dial is protected by a domed mineral crystal, protected by the case and its bezel. For easy readability in poor lighting conditions, the watch is equipped with hands and points at the hour positions with a luminescent layer and double LED illumination. The digital display, located in the lower part of the dial, shows the currently selected mode and information about the watch settings. Thanks to the case diameter of 51,3 mm, it ranks among large watches. The water resistance of this model is 200 m, so you can swim with the watch without any problems.

Features:

• shock, mud, low temperature, water, dust resistance
• Bluetooth for connection and synchronisation with a mobile phone
• LED display illumination
• altimeter, barometer
• compass, thermometer
• magnetic declination correction
• step counter
• sunrise and sunset
• location indicator
• stopwatch, countdown
• world time - selection from 38 time zones
• easy-to-read negative display
• alarm, snooze alarm
• hand shift function
• low battery warning
• water resistance up to 200 m

The Casio G-Shock model range offers a suitable watch for anyone looking for a combination of durable, sporty watches in an attractive design, combined with a rich range of functions. All models from this globally popular range are more resistant to shocks and impacts than ordinary watches. They also demonstrate increased resistance to magnetic fields.

Reviews, articles and tests:

• 6 best ana-digi watches (2026)

• Casio G-Shock Mudmaster: durable tools not only for mud