Tarick B. 08/01/2026
| Reference Ocarat | #107734 |
| Reference | GWG-B1000-1AER |
| Brand | Casio G-Shock |
| Product Type | Watch |
| Gender | Men |
| Color | Black Gray |
| Material | Carbon Steel Synthetic |
| Material Quality | Black DLC coating Carbon fiber Resin Stainless Steel |
| Warranty | 2 Years |
| Length (in mm) | 58,70 |
| Thickness (in mm) | 16,20 |
| Diameter (in mm) | 52,10 |
| Manufacturing | Japan |
| Warranty Type | International |
| Labels and Certificates | Authorized Retailer |
| Case Shape | Round |
| Case Weight (in g) | 114,00 |
| Bezel | Stainless Steel |
| Dial Finish | Geometric Patterns |
| Watch Case Back | Snap-On Case Back |
| Crystal Shape | Flat |
| Glass Quality | Sapphire Crystal |
| Buttons | 1 Crown 5 Pushers |
| Water Resistance (in ATM) | 20 |
| Movements | Solar |
| Movement Type | Japanese Movement |
| Calendar and Time | Dates Days Hours Minutes Seconds |
| Chronograph Function | Yes |
| Timekeeping and Measurement | 1/100th of a second chronometer Chronograph Chronometer Chronometer - 24 hours Countdown |
| Alarm-Wake Up | Yes |
| Navigation and Instruments | Altimeter Barometer Compass Thermometer Thermometer (°C or °F) |
| Display Type | Analog (hands) Digital |
| Display Specifications | Arabic Numerals Full Auto LED Indices and railroad track |
| Number of Counters (Additional) | 2 |
| Techniques and Mechanics | Alarm Clock LED Light Magnetic Resistance Multifunctions: see description |
| Bracelet Material | Resin |
| Strap Color | Gray |
| Watch Clasp | Tang Buckle |
| Lug Width (in mm) | Special - Custom Made |
| Activities | Swimming / Diving Technical Adventure |
| Collection | G-Shock Mudmaster |
| Connectivity and Display | Bluetooth Radio-controlled |
Casio is a Japanese brand that has carved out a premier place in the world of watchmaking. Renowned for its electronic devices, it has established itself as a benchmark through its rugged timepieces. The company has been at the forefront of innovation since the 1970s. It dresses your men's wrist in style with the Mudmaster GWG-B1000-1AER Watch, a timepiece built for adventure - a tribute to the Smokejumpers, America's elite parachuting firefighters. Its case offers a more comfortable fit and a tough exterior with a protective structure featuring metal components, delivering exceptional durability and high resistance. The modern design draws inspiration from off-road vehicles and survival gear. For this watch, Casio engineered a new structure combining components made from different materials: stainless steel for the bezel and carbon fiber reinforced resin for the case and the guards of the 4 push buttons on the left and right sides. These are protected by cylindrical stainless steel pieces, and the button stems are fitted with sealing gaskets. A DLC coating is applied to the surface of the materials to further enhance abrasion resistance. Additionally, the sides and underside of the module incorporate αGEL to ensure vibration resistance. The case measures 52.10 mm in diameter and 16.20 mm in thickness, with a lug-to-lug length of 58.70 mm and a weight of 114 grams. The crown at 3 o'clock is protected and secured against accidental mode changes, fitted with a screw-lock system to prevent contamination by mud and dust. The dial is protected from shocks and scratches by a flat sapphire crystal. The whole is sealed by a snap-back and brushed caseback offering water resistance to 20 ATM.
The dial of this watch is engineered for professionals operating in the most demanding environments. In dark gray with a textured finish, it combines analog and digital displays while clearly presenting all available functions. It features oversized hour markers in gray, except at 6 and 12 o'clock where bold Arabic numerals are rendered in yellow. These markers are encircled by a black inner bezel underscored by a minute track completed with bold luminescent bars and Arabic numerals at every 5-minute interval. At 3, 6, 9, and 12 o'clock, the 4 cardinal points are marked with the letters E, S, W, and N. Timekeeping is handled by two oversized hands coated with a luminescent treatment - the short hand for hours, the long hand for minutes - accompanied by a slim white seconds hand with a black counterweight. The dial features two compass indicators with automatic horizontal correction, an altimeter, a barometer, and a thermometer, all positioned at 9 o'clock. The seconds hand indicates north, while the hand in the subdial at 3 o'clock indicates the recorded bearing direction and the direction toward a location specified in the app (location indicator) - making it easy to track the direction to a destination. At 6 o'clock, a digital subdial displays the date and day alongside other useful complications. For near-zero visibility day or night, the dual LED lighting proves invaluable. The brand completes the design with "Mudmaster" in red, "Casio" and "Tough MVT" at 12 o'clock, along with "G-Shock" above the digital display.
Bluetooth® Smart
The watch features energy-efficient Bluetooth® technology, enabling data exchange with a single button press. The Bluetooth® function wirelessly connects the watch to a smartphone, unlocking a wide range of highly practical features.
Smartphone Time
When the wall clock is paired with a smartphone, the time is set automatically and displays the current time anywhere in the world.
Full Auto LED Illumination
A simple tilt of the wrist in low-light conditions automatically activates the LED dial illumination.
Shock Resistance
The shock-resistant structure shields the watch from impacts and vibrations.
Magnetic Resistance
No magnetic field is a match for this watch. The module shield protects the electronics and prevents any interference.
Automatic time sync via radio-controlled signal reception (EU, USA, JPN, CHN)
Whether you're in Europe, North America, Japan, the vast territories of Canada, Central America, or China - once the watch is set to the local time zone, it picks up the corresponding radio signal and always displays the exact date and time. In many countries, it automatically switches between daylight saving time and standard time.
Barometer (260 / 1,100 hPa)
A built-in sensor measures local atmospheric pressure and displays it on screen - useful during hikes, for example, to spot weather trends before they develop.
Thermometer (-10°C / +60°C)
A built-in sensor measures local temperature and displays it on screen.
Digital Compass
A direction sensor measures magnetic north and displays it on the watch, along with the direction you're heading.
Altimeter 10,000 m
A built-in sensor measures local atmospheric pressure and calculates the current altitude.
Altitude Accumulation
The Altitude Accumulation function adds up every meter gained during a climb, giving you an at-a-glance readout of total elevation achieved throughout your hike.
Altimeter Memory
The watch features a memory that can store up to 40 altitude data records, depending on the model, which can be accessed at any time. Each data record includes the measured altitude along with the date and time of the recording. In addition to the measured altitude, the altimeter also logs the maximum and minimum altitude of a measurement.
Sunrise/Sunset Indicator
Once your local data - such as date, time, and location - has been entered, sunrise and sunset times can be displayed for any other date.
Activity Log
Once the activity log function is activated, route and altitude profiles are stored in your smartphone and can be viewed on a map. They are also automatically saved to a tracking log.
Location Indicator
The location indicator displays the direction and distance to a previously saved location. This feature comes in handy when you're lost and need to find your way back to a cabin, a lake, or your car.
World Time Function
The World Time function displays local time across 29 different time zones.
1/100 sec Stopwatch - 24 Hours
Measures elapsed time with 1/100th-of-a-second precision for up to 24 hours. An audible signal confirms when the stopwatch starts and stops.
Countdown Timer - 1/1 sec - 1 Hour
Built for precision-focused users: countdown timers alert you to important or recurring events with an audible signal at your preset date and time. Set in seconds, up to 1 hour in advance - an especially handy feature for daily medication reminders or repeated training sessions.
5 Daily Alarms
A daily audible alarm reminds you of your commitments at your preset time. This model offers five independent alarms so you can stay on top of all your important appointments with total flexibility.
Automatic Hand Correction
The automatic hand correction checks the base position of the hands every hour and corrects them if needed - whether due to misalignment from an impact or magnetic interference.
Button Beep On/Off
The button beep can be turned off using the mode button. Once disabled, no beep sounds when switching between functions. However, any programmed alarms or countdown timers remain active after the button beep is turned off.
Hand Shift Function
This function moves the hands when they obstruct the visibility of the time, date, or stopwatch display.
Smart Access Technology
Thanks to the Smart Access system, the watch can be set quickly and intuitively via an electronic crown. Functions such as the stopwatch, countdown timer, alarm, and world time can be easily adjusted by pressing and rotating.
Find My Phone Function
Misplaced your smartphone? Just press one of the watch's buttons to trigger an alarm on your phone.
Auto Calendar
Once programmed, the auto calendar always displays the correct date.
12/24-Hour Time Format
You can display the time in either 12-hour or 24-hour format.
Battery Level Indicator
Displays the current battery level.
This model runs on a solar movement with a built-in radio-controlled synchronization system to keep perfect time. Invisible solar cells inside the watch convert light into energy to power all functions. A rechargeable battery provides the capacity needed to keep running in low-light conditions.
The strap on this timepiece is crafted from durable resin in dark gray, featuring a textured finish that reinforces its rugged look. Flexible and comfortable, it secures around the wrist with a pin buckle.
This model delivers water resistance to 20 atmospheres, or 200 meters. This is a watch that can keep up with your deep-water activities - it's built for freediving! Completely water-safe, you can also use high-pressure washers with this timepiece on your wrist without a second thought. Showering, bathing, lap swimming, and freediving are all fair game. However, for scuba diving with tanks, we recommend a timepiece with a higher water resistance rating. Also, avoid operating the crown or push buttons while submerged to preserve the integrity of the mechanism.



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Customer reviews
Tarick B. 08/01/2026
Mudmaster GWG-B1000-1AER Wall Clock
(Ref. 107734)