Casio G-Shock GWG-2000 Watches


Quick Content Guide

  1. Japanese approaches to Tough and Functional Watches in GWG-2000 *the most distinctive features in details
  2. General information about the watch *year of first release, model range etc.
  3. GWG-2000 Usage Patterns *what the watch is usually meant for
  4. GWG-2000 Model Range *in different colors and bands
  5. The most distinctive specs *from our Editorial point of view
  6. Official GWG-2000 Video *only from Casio Company
  7. Other G-Shock GWG Watches *similar by price and functions but different by cases
  8. Official GWG-2000 Specs *all details and for base version GWG-2000-1A1

Enjoy Japanese approaches to Tough and Functional Watches!

FORGED CARBON BEZEL. The bezel is made from forged carbon fibre, a composite material used in aircraft fuselages, at the 12 and 6 o’clock positions. Carbon fibre-reinforced resin is forged in a press die at high temperature and pressure, producing strong, lightweight parts with complex shapes.

CARBON CORE GUARD STRUCTURE. Offering strength, lightness, and excellent durability, the carbon fibre-reinforced resin case protects the module. These properties of carbon fibre made it possible to reduce the size of the case, which is 1.9mm slimmer than the previous model (GWG-1000). 

DUST- AND MUD-RESISTANT STRUCTURE TO SUPPORT LAND MISSIONS IN THE HARSHEST CONDITIONS. Newly developed Mud Resist buttons combine with stainless steel button pipes and a silicone buffer material to add toughness that will withstand long-term use.

DIAL DESIGNED FOR OPTIMUM VISIBILITY OUTDOORS. The large-diameter dial gives a sense of depth and makes room for the large dimensional index marks. The mode indicator at the 9 o’clock position has an arrow-shaped hand and is angled to offer better visibility from a low angle.

EXTERIOR DESIGN INSPIRED BY PROFESSIONAL GEAR. Design details are inspired by professional gear, including the fine texturing on the band, the checked surface texture of the crown, and ribbed guards to protect the front buttons. The exterior design offers both practicality and aesthetic appeal.

SUPER ILLUMINATOR. (high-brightness double led light) for maintaining watch readability in the dark

TRIPLE SENSOR. (digital compass, altimeter, barometer/thermometer) senses natural changes


General Information

Pricemay be available 
*average Amazon Price, we may earn commission from purchases
Year of first Release2021
Module Number5678
Model RangeMUDMASTER (The Mudmaster has been designed to withstand the toughest of conditions. With a digital compass, barometer, altimeter, thermometer and step tracker, you’ll reach your goal even when challenges seem insurmountable. MUDMASTER – the perfect union of toughness and technical finesse.)
Battery TypeSolar powered (G-Shock Batteries)
Other Divisions the GWG-2000 belongs to: *you may find all watches of the division by clicking on the linkG-Shock Ana-Digi
G-Shock Carbon Core Guard
G-Shock 2021
G-Shock Solar
G-Shock Barometer Altimeter
G-Shock Compass
The Latest G-Shock Watch

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GWG-2000 Usage Patterns *what the watch is usually meant for

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GWG-2000 Model Range *may be updated

*You may find updated information about colors on our G-Shock 2021 New Releases page →

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The most distinctive specs of GWG-2000 *Editorial
Сompact design (is made possible by the forged carbon bezel, carbon core guard case structure, and mud-resist buttons combined with stainless steel pipes and silicone buffers)
Carbon Fiber (finely powdered carbon fiber is kneaded into resin, then heat-pressed to mold a bezel that is more complex, yet even stronger than before)
Triple Sensor Measurements (keep you updated with direction, altitude, barometric pressure, and temperature readings)
Large Arabic numeral indexes (extra-thick arrow-shaped hands, double LED lights, and sapphire glass ensure high visibility)
Textured Band (the band is textured in the style of heavy-duty no-slip rubber grips, and the buttons are knurled for easy operation)
Tough Solar (CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power)
Radio-controlled Watch; Multi band 6 (additional way for time sync. This watch receives time calibration radio signals that keep the displayed time accurate)
Tough Movement (A CASIO-original thin analog movement made possible by hybrid mounting protects against damage and enables auto home position correction that helps keep you on time all the time)

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Official GWG-2000 Video

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Other G-Shock GWG Watches *similar by price and functions but different by cases


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Official Marketing Focus from Casio

Take on the toughest terrain with the G-SHOCK MUDMASTER, designed to handle the harshest, roughest on-land environments.
This shock-resistant watch is constructed to withstand all the mud and sand your adventures may bring, and it leverages our latest exterior technology to deliver a smaller profile with an even better fit.
This compact design is made possible by the forged carbon bezel, carbon core guard case structure, and mud-resist buttons combined with stainless steel pipes and silicone buffers. Finely powdered carbon fiber is kneaded into resin, then heat-pressed to mold a bezel that is more complex, yet even stronger than before.
Triple sensor measurements keep you updated with direction, altitude, barometric pressure, and temperature readings. Large Arabic numeral indexes, extra-thick arrow-shaped hands, double LED lights, and sapphire glass ensure high visibility.
The band is textured in the style of heavy-duty no-slip rubber grips, and the buttons are knurled for easy operation. A MUDMASTER designed for practicality, durability, and power.


Official GWG-2000 Specs / Features *for base version GWG-2000-1A1

  • Case / bezel material: Resin / Stainless steel
  • Resin Band
  • Neobrite
  • Sapphire crystal with glare-resistant coating
  • Carbon Core Guard structure
  • Mud Resistant
  • Shock Resistant
  • Screw Lock Crown
  • 200-meter water resistance
  • Tough Solar (Solar powered)
  • Double LED light
    LED light for the face (Full auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
    LED backlight for the digital display (Full auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
  • Low-temperature resistant (–10°C/14°F)
  • Time calibration signal reception
    Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful)
    *5 times a day for the Chinese calibration signal
    Manual receive
    The latest signal reception results
  • Time Calibration Signals
    Station name: DCF77 (Mainflingen, Germany)
    Frequency: 77.5 kHz
    Station name: MSF (Anthorn, England)
    Frequency: 60.0 kHz
    Station name: WWVB (Fort Collins, United States)
    Frequency: 60.0 kHz
    Station name: JJY (Fukushima, Fukuoka/Saga, Japan)
    Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/ Saga)
    Station name: BPC (Shangqiu City, Henan Province, China)
    Frequency: 68.5 kHz
  • The auto hand home position correction
  • Hand shift feature (manual or auto (during altitude, barometric pressure, and temperature measurement))
  • Digital compass
    Measures and displays direction as one of 16 points
    Measuring range: 0 to 359°
    Measuring unit: 1°
    60 seconds continuous measurement
    Hand indication of north
    Bidirectional calibration
    Magnetic declination correction
  • Altimeter
    Measuring range: -700 to 10,000 m ( -2,300 to 32,800 ft.)
    Measuring unit: 1 m (5 ft.)
    Hand indication of altitude differential
    Manual memory measurements (up to 30 records, each including altitude, date, time)
    Auto log data (High/low altitudes, cumulative ascent and descent)
    Others: Relative altitude readings (±100m /±1000m), Selectable measurement interval: 5 seconds or 2 minutes
    *1 second for first 3 minutes only
    *Changeover between meters (m) and feet (ft)
  • Barometer
    Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
    Display unit: 1 hPa (0.05 inHg)
    Hand indication of pressure differential
    Atmospheric pressure tendency graph
    Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure)
    *Changeover between hPa and inHg
  • Thermometer
    Display range: -10 to 60°C (14 to 140°F)
    Display unit: 0.1°C (0.2°F)
    *Changeover between Celsius (°C) and Fahrenheit (°F)
  • World time
    29 time zones (29 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
  • 1/100-second stopwatch
    Measuring capacity: 23:59’59.99”
    Measuring modes: Elapsed time, split time, 1st-2nd place times
  • Countdown timer
    Measuring unit: 1 minute
    Countdown range: 60 minutes
    Countdown start time setting range: 1 second to 60 minutes (1-minute increments)
  • 5 daily alarms
  • Hourly time signal
  • Battery level indicator
  • Power Saving (display goes blank and hands stop to save power when the watch is left in the dark)
  • Full auto-calendar (to year 2099)
  • 12/24-hour format
  • Button operation tone on/off
  • Regular timekeeping
    Analog: 3 hands (hour, minute (hand moves every 10 seconds), second)
    Digital: Hour, minute, second, am/pm, month, date, day
  • Accuracy: ±15 seconds per month (with no signal calibration)
  • Approx. battery operating time:
    6 months on rechargeable battery (operation period with normal use without exposure to light after charge)
    25 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
  • Size of case : 61.2×54.4×16.1mm
  • Total weight : 106g

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