This is a Twin Sensor model from the G-Shock Mudmaster Series, designed for use in extreme environments scattered with rubble, dirt and debris. With a push of one large button at the 3 o'clock position, you can check your position with its Compass. The temperature can also be measured easily by pushing the button at 4 o'clock. This model has been developed with operability in mind so that anyone can intuitively check their position using the Compass, even in the most extreme climates, without visual observation. The dust and mud-resistant button guard cylinder structure prevents fine sand and mud from getting into the buttons while also helping to absorb any shock to the buttons and improving operability. Broad hour/minute hands and indices of large Arabic numerals have also been adopted to improve visibility. This design is packed with military-style flare, including a mode display that uses a sprocket-inspired disk dial and a textured band to prevent slipping.
Q: What is the purpose of the dust and mud-resistant button guard cylinder structure?
A: The dust and mud-resistant button guard cylinder structure prevents fine sand and mud from getting into the buttons. It also helps to absorb shock to the buttons and improve operability.
Q: What is the battery life of the watch?
A: The battery life of the watch is 17520 hours.
Q: Is the watch's display backlit?
A: The watch has a backlit display.
Q: What is the watch's weight?
A: The product weighs 0.503 pounds.
Q: Does the watch have a stopwatch function?
A: This watch does have a stopwatch function.
Q: How does the watch measure temperature?
A: The temperature can be measured by pushing the button at the 4 o'clock position.
Q: Where do you take it to get fixed I have one that is messed up
A: Please contact Casio Repair Department / Customer Service Department Directly: https://casiosupport.zendesk.com/hc/en-us/articles/13784876521113-Watch-Service
Q: Made in where? Japan or china
A: undefined
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This is a Twin Sensor model from the G-Shock Mudmaster Series, designed for use in extreme environments scattered with rubble, dirt and debris. With a push of one large button at the 3 o'clock position, you can check your position with its Compass. The temperature can also be measured easily by pushing the button at 4 o'clock. This model has been developed with operability in mind so that anyone can intuitively check their position using the Compass, even in the most extreme climates, without visual observation. The dust and mud-resistant button guard cylinder structure prevents fine sand and mud from getting into the buttons while also helping to absorb any shock to the buttons and improving operability. Broad hour/minute hands and indices of large Arabic numerals have also been adopted to improve visibility. This design is packed with military-style flare, including a mode display that uses a sprocket-inspired disk dial and a textured band to prevent slipping.

A rugged, mud-resistant analog-digital watch built for extreme environments, featuring a durable shockproof design and bold, easy-to-read dial. Equipped with Twin Sensor technology (compass and thermometer), 200M water resistance, and LED illumination, it delivers reliable performance for outdoor adventures and everyday toughness.

The Casio G-Shock Master of G Air Gravitymaster GR-B300EC-1A is a professional-grade men's watch combining cutting-edge design with exceptional durability. Featuring a 54.7mm carbon core guard case with biomass resin construction, this solar-powered timepiece delivers reliable performance in demanding conditions. The black analog dial with emergency color accents ensures excellent readability, while luminous hands and markers provide visibility in darkness. Bluetooth connectivity enables smartphone integration for easy timekeeping adjustments and dual-time zone display. With 200m water resistance, a screw-down crown, chronograph, countdown timer, and perpetual calendar, this watch suits pilots, outdoor enthusiasts, and professionals requiring dependable functionality and rugged style.

The Casio G‑Shock GA‑2110SU‑3A features a hybrid analog‑digital display housed in a lightweight, durable Carbon Core Guard case. With 200‑meter water resistance and shock‑resistant construction, it is built for rugged use. The olive green strap and bezel give it a sporty, tactical look, making it ideal for outdoor and everyday wear.