Casio G-Shock MUDMASTER Radio-Controlled Solar Watch GWG-100-1AJF Men’s Black [Official Japanese Product]

Product introduction

Designed for extreme land use, often surrounded by piles of rubble and dirt, the Master of G series “Madmaster” introduces a new radio-controlled solar-powered watch with a dust- and mud-resistant construction. To withstand harsh environments, the buttons feature a dust- and mud-resistant button guard cylinder structure. A cylindrical tube protects the buttons, and a gasket built into the buttons prevents the intrusion of fine sand and mud. The cylindrical tube also cushions the buttons and improves operability, ensuring a durable design. The design evokes the rugged image of specialized vehicles and tools used in disaster relief. For enhanced visibility, even in harsh conditions, the watch features wide hour and minute hands and large Arabic numeral indices. The band features a non-slip texture, creating a military-inspired design. This new Mudmaster is here to support the toughest men on land.

Shock-resistant construction
, Tough Solar (solar charging system)
, dustproof and mudproof construction
, 200-meter water resistance,
Radio wave reception: Automatic reception (up to 6 times per day) (up to 5 times per day for Chinese radio waves), manual reception, compatible areas: Japan, North America, Europe, and China.
*When the home time setting is set to a city that can receive radio waves, the watch will receive the station that corresponds to that city. The time difference will also be set based on the selected city.
●Hand retraction function (When the hands overlap with the LCD display and are difficult to see, you can temporarily retract the hands from above the LCD display)
●World time: Time display for 48 cities worldwide (31 time zones, daylight saving time setting function) + UTC (Coordinated Universal Time), Home city swap function
●Stopwatch (1/100 second, 60-minute counter, with split)
●Timer (set unit: 1 second, maximum set: 100 minutes, measured in 1-second increments)
●5 time alarms (with countdown function) and hourly signal
●Battery indicator display
●Power saving function (When in a dark place, the display is turned off after a certain period of time to save power)
●Full auto calendar
●12/24-hour display switching
●Operation sound ON/OFF switching function
●Double LED light: LED light for dial (with full auto light, neon illuminator, afterglow function, afterglow time switching (1.5 seconds / 3 seconds)), LCD Internal LED backlight (with full auto light, Super Illuminator, afterglow function, afterglow time switch (1.5 seconds / 3 seconds))
● Operating time from full charge without solar power generation: When functions are used / approx. 7 months, when in power saving mode / approx. 18 months
* When radio wave reception is not performed, it will operate with normal quartz accuracy (average monthly difference of ±15 seconds).

Brand introduction

G-SHOCK established a new concept of toughness in watches. It all began with the passionate belief of its developers in creating a watch that would not break even if dropped, a seemingly foolhardy challenge that overturned conventional wisdom at the time. After more than 200 prototypes and roughly two years of work, the shock-resistant structure was finally completed. This was the birth of the technology that forms the core of toughness. Since then, G-SHOCK has continued to evolve endlessly, pursuing even greater toughness in every aspect: structure, materials, and functionality.