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Japan : 6/11 00:13   EN
Europe, UK: Tuesday, Jun 16 ~
USA: Sunday, Jun 14 ~
Australia: Tuesday, Jun 16 ~
Asia: Sunday, Jun 14 ~
UAE: Monday, Jun 15 ~

Order within 11 Hours 46 mins with Scheduled Delivery. If you place an order within this time, We will ship Monday, Jun 15 2026. This delivery time is calculated by DHL and FedEx. You can check the exact delivery date on checkout page.

Buyer Protection

Full refund if not genuine. Full or partial refund, if the new item is not as described.

     Description (4,490 characters)
Set contents: Body, box, instruction manual, warranty card are included in the instruction manual
Reinforced waterproof for daily life: 20BAR
Radio stations for 6 stations worldwide (Japan x 2, North America, UK, Germany, China)
Shock-resistant structure that resists shock and vibration
Dust- and mud-proof construction that prevents mud and dust from entering the watch
Double LED light that illuminates the dial and the liquid crystal part (with full auto light function that lights up when the arm is tilted only when the brightness is judged to be dark)
Target: Men s
Product Introduction A new model of radio solar with dust-proof and mud-proof structure will appear from the master of G series `` Mad Master ''
that is supposed to be used on the shore of extreme land where rubble and earth and sand are piled up and scattered
In order to respond to use in harsh environments, the button guard cylinder structure that enables dustproof and mudproof performance is adopted for the button.
A cylindrical pipe that protects the button and a gasket built into the button prevent fine sand and mud from entering.
In addition, the cylindrical pipe plays a role in reducing the impact received by the buttons and improving operability, and is designed to withstand tough use.
Design expresses a rugged image of special vehicles and tools that are active in disaster relief
In addition, wide hour and minute hands and large Arabic numerals are used to improve visibility even under harsh conditions
The band is given a texture that is anti-slip, and the design is full of military taste everywhere.
Introducing the New Mad Master to support tough guys on the harsh missions on land

・ Shock-resistant structure
・ Tough solar (solar charging system)
・ Dust-proof / mud-proof structure
・ 20 atmospheric pressure waterproof function
・ Radio wave reception function: Automatic reception (maximum 6 times / day) (China radio wave is maximum 5 times / day) / Manual reception, Supported areas: Japan, North America, Europe, China * If you set the home time setting to a receivable city, you will receive stations that match the city.
The time difference is set by the selected city.

・ Needle retraction function (If the needle overlaps the LCD display and is difficult to see, the needle can be temporarily retracted from the LCD display.)
World time: 48 cities (31 time zones, daylight saving time setting function) + UTC (universal coordinated time) time display, home time city replacement functionStopwatch (1/100 second, 60 minutes total, with split)
・ Timer (set unit: 1 second, maximum set: 100 minutes, measured in 1 second units)
・ Five time alarms (with countdown function)
・ Time signal
・ Battery indicator display
・ Power saving function (In the dark, 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 (Full auto light, neon illuminator, afterglow function, afterglow time switch (1.5 seconds) / 3 seconds)), LED backlight for LCD part (with full auto light, super illuminator, afterglow function, afterglow time switching (1.5 seconds / 3 seconds))
・ Driving time without solar power generation from full charge: When using function / About 7 months, When power saving state / About 18 months * When radio wave reception is not performed, normal quartz accuracy (average month (Difference ± 15 seconds)
Brand introduction G-SHOCK has built a new concept of toughness on watches
It all started with a developer's passion for creating a watch that would not break even if dropped, and a reckless challenge that overturned the common sense of the time.
Over 200 prototypes have been repeated, and about two years have been spent, and the shock-resistant structure has been completed.
It is the birth of technology to play the core of toughness
Since then, G-SHOCK has continued to evolve endlessly
Structure, material, function
Pursuing further toughness in every aspect

Model Number: GWG-100-1A8JF


Tags:

Casio  G-SHOCK  Travel  Water Resistant mark  G-Shock Analog-Digital  Triple Sensor  Analog-Digital  Tough Solar  G-Shock Master of G GWG1000  G-Shock Master of G Mudmaster GG1000  G-Shock GWG-100  Radio clock  G-Shock Rangeman GPRB1000  Casio G-Shock GWG-1000  Casio GWG-100-1A3ER  Casio PRO TREK Smart WSD-F20  G-Shock Master of G Mudmaster GSG100-1A  Pro Trek  Casio Pro-Trek PRW-2500-1ER  Casio Pro Trek PRW-7000-1AER  Navy blue  Charade  


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Reinforced waterproof for daily life: 20BAR
Radio stations for 6 stations worldwide (Japan x 2, North America, UK, Germany, China)
Shock-resistant structure that resists shock and vibration
Dust- and mud-proof construction that prevents mud and dust from entering the watch
Double LED light that illuminates the dial and the liquid crystal part (with full auto light function that lights up when the arm is tilted only when the brightness is judged to be dark)
Target: Men s
Product Introduction A new model of radio solar with dust-proof and mud-proof structure will appear from the master of G series `` Mad Master ''
that is supposed to be used on the shore of extreme land where rubble and earth and sand are piled up and scattered
In order to respond to use in harsh environments, the button guard cylinder structure that enables dustproof and mudproof performance is adopted for the button.
A cylindrical pipe that protects the button and a gasket built into the button prevent fine sand and mud from entering.
In addition, the cylindrical pipe plays a role in reducing the impact received by the buttons and improving operability, and is designed to withstand tough use.
Design expresses a rugged image of special vehicles and tools that are active in disaster relief
In addition, wide hour and minute hands and large Arabic numerals are used to improve visibility even under harsh conditions
The band is given a texture that is anti-slip, and the design is full of military taste everywhere.
Introducing the New Mad Master to support tough guys on the harsh missions on land

・ Shock-resistant structure
・ Tough solar (solar charging system)
・ Dust-proof / mud-proof structure
・ 20 atmospheric pressure waterproof function
・ Radio wave reception function: Automatic reception (maximum 6 times / day) (China radio wave is maximum 5 times / day) / Manual reception, Supported areas: Japan, North America, Europe, China * If you set the home time setting to a receivable city, you will receive stations that match the city.
The time difference is set by the selected city.

・ Needle retraction function (If the needle overlaps the LCD display and is difficult to see, the needle can be temporarily retracted from the LCD display.)
World time: 48 cities (31 time zones, daylight saving time setting function) + UTC (universal coordinated time) time display, home time city replacement functionStopwatch (1/100 second, 60 minutes total, with split)
・ Timer (set unit: 1 second, maximum set: 100 minutes, measured in 1 second units)
・ Five time alarms (with countdown function)
・ Time signal
・ Battery indicator display
・ Power saving function (In the dark, 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 (Full auto light, neon illuminator, afterglow function, afterglow time switch (1.5 seconds) / 3 seconds)), LED backlight for LCD part (with full auto light, super illuminator, afterglow function, afterglow time switching (1.5 seconds / 3 seconds))
・ Driving time without solar power generation from full charge: When using function / About 7 months, When power saving state / About 18 months * When radio wave reception is not performed, normal quartz accuracy (average month (Difference ± 15 seconds)
Brand introduction G-SHOCK has built a new concept of toughness on watches
It all started with a developer's passion for creating a watch that would not break even if dropped, and a reckless challenge that overturned the common sense of the time.
Over 200 prototypes have been repeated, and about two years have been spent, and the shock-resistant structure has been completed.
It is the birth of technology to play the core of toughness
Since then, G-SHOCK has continued to evolve endlessly
Structure, material, function
Pursuing further toughness in every aspect

Model Number: GWG-100-1A8JF
2695
4549526176555 In Stock