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My GShock

NEW MUD RESISTANCE + TRIPLE SENSOR This new MUDMASTER model was created especially for this whose work takes it into areas where piles of rubble, dirt, and debris are present. A special vibration-resistant construction lets them stand up to wear while operating cutters, crushers, drills and other heavy machinery to clear way large obstacles. This is CASIO's first analog watch to come with Mud Resist construction, which helps to ensure that nothing gets into the watch when down and dirty work takes you deep into the dirt and sludge. Multiple gaskets are used on the pipes that guide buttons and shafts, which keeps mud out. These pipes not only act to protect buttons from impact, they also enhance button operation. The screw-in force of the screw lock bezel on an internal gasket further increases mud resistance. A new bezel structure lets you visually check whether the bezel has been screwed in adequately. In addition, Triple Sensor Version 3 capabilities provide instant access to direction, barometric pressure, and temperature information when needed under tough conditions. The face of the watch is marked with large Arabian numerals as 12, 3, 6, and 9 o'clock for easy reading. The face is illuminated by a double LED light and protected by a sapphire crystal to ensure high visibility under virtually any conditions imaginable. The band surface is processed to resemble a cloth band texture, and the hour and minute hands are shaped with points that make them resemble warning markers. All buttons have a checkered surface for surer operation, and the overall design is tough and rugged. • Vibration Resistant Structure • Digital compass, barometric pressure/altitude, temperature readings • Double LED light illuminates the face and digital display for outstanding readability. • Screw-in Crown • Multiband 6 (Automatically adjusts time settings based on reception of one of six time calibration signals around the globe: Japan (2), China, United States, England, Germany.) • Tough Solar




Built to prevent intrusion by sand,
mud or dust and to ensure reliable operation in the harshest environments,
this tough structure is prepared to support training
and actual missions in environments such as jungles and deserts.
It's an ideal tool for rangers and rescue crews.



A cylindrical guard structure is adopted for all the buttons, and the cylindrical button shafts are fitted with gasket linings. This structure not only protects the buttons against intrusion by dust and mud, but it also helps to alleviate shocks. The crown is also protected by a highly airtight screw-lock structure. Gaskets are installed at points where the crown meets the surface of the case to assure superior resistance to dust and mud.


Dual mud-resistant structures for further enhanced strength

Mud-resistant screw-lock structure

Mud-resistant screw-lock structure

  • Button pipes: The pipes guard against intrusion by mud and alleviate lateral shocks.
  • Gaskets: Gaskets installed inside the cylinders and button shafts increase their airtightness.
  • Air vents: Air vents positioned in the base of the button shafts prevent button malfunctions due to changes in air pressure.
Mud-resistant button guard structure

Mud-resistant button guard structure

  • Gasket: A gasket is inserted between the crown and case to assure airtightness.
  • Lock/release marking: A red marking permits visual verification of the crown's lock/release status.

Vibration-resistant structure

αGEL® (Alpha Gel) is packed under
and around the module to
protect the watch from malfunctions
or damage due to vibrations.
Washers securing the lug screws help
prevent vibrations from loosening the band.

* A soft gel material with silicone
as its main component featuring superior
vibration-absorption capabilities.
* αGEL® is a registered trademark of Taica Corporation.


Built-in sensors that measure directions,
atmospheric pressure/temperatures and altitudes quickly
and precisely achieve precision performance under the harshest conditions.

Digital Compass

Digital Compass



Barometer / Thermometer

Barometer / Thermometer


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

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