G Shock Watches

G-Shock Mudmaster Watch GWGB1000-3A


Enjoy both fearless adventure and a comfortable fit with this tough and rugged Master of G Mudmaster flagship timepiece.

This analogue-digital combination watch delivers more comfortable fit and outstanding durability with a robust exterior incorporating a guarding structure built with metal components.

The watches of the G-SHOCK Master of G line, developed for professionals working in the harshest environments, come equipped with even tougher functionality. And the MUDMASTER takes this even further with the ability to handle the roughest on-land environments, earning the appreciation and trust of rangers and rescue teams operating in extreme environments.

The comfortably sized GWG-B1000 features a metal exterior crafted with high-precision forging techniques and a carbon fiber-reinforced resin case that offers high strength and outstanding durability.

Radio-controlled and solar-powered, the watch is also equipped with a triple sensor that keeps you updated with direction, altitude, barometric pressure, and temperature readings. Double LED lights and sapphire crystal ensure high readability so you always see the time and other readings, no matter what the conditions are like.

Input a specific location in the app and the Location Indicator function moves the indicator hand at the 3 o’clock position to point in that direction so you stay on track at all times — even when visibility is obstructed by extreme conditions like sandstorms.

The use of bio-based resins for the case, some bezel components, and the band make for a watch that demonstrates the MUDMASTER commitment to the environment.


  • Case and bezel material: Resin (Bio-based) / Stainless steel
  • Band: Bio-based resin ban
  • Glass: Sapphire crystal with anti-reflective coating
  • DLC Coating bezel
  • Rose gold ion plated bezel
  • Neobrite
  • Shock Resistant
  • Vibration resistant
  • Mud Resistant
  • Carbon Core Guard structure
  • 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)
  • LED: White
  • World time - 38 time zones (55 cities + coordinated universal time), daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping

  • Sunrise/sunset display - Sunrise, sunset time display - Sunrise time and sunset time for specific date

  • 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 second

  • Countdown range: 60 minutes - Countdown start time setting range: 1 minute to 60 minutes (1-minute increments)

  • 5 daily alarms
  • Hourly time signal
  • Full auto-calendar (to year 2099)
  • Button operation tone on/off

  • The auto hand home position correction

  • Power Saving (display goes blank and hands stop to save power when the watch is left in the dark)
  • Battery level indicator
  • Approx. battery operating time: 6 months on rechargeable battery (operation period with normal use without exposure to light after charge) - 24 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
  • Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
  • 12/24-hour format
  • Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
  • Regular timekeeping - Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 2 dials - Digital: Hour, minute, second, pm, month, date, day
  • 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 kHzTime 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 adjustment: Radio-controlled Watch; Multi band 6

  • Compass function: - 16 direction / direction angle (0 to 359°) measured, direction continuous measurement (60 seconds), north direction guideline function. - Bearing memory function - Automatic horizontal, magnetic declination, and orientation correction function. - Barometric pressure measurement function (measurement range: 260~1,100hPa (7.65~32.45inHg), 1hPa (0.05inHg)) -  Barometric pressure trend graph display (past 20 hours displayed), pressure difference indicator (±10hPa) - Barometric pressure trend information alarm (when a characteristic change in air pressure occurs, it will be notified by arrows and sound notification) The pressure trend graph can be changed to measurement every 30 minutes. That's for the last 5 hours. *Changeover between hPa and inHgAltitude measurement function/relative altimeter (measurement range: -700 to 10,000 m (-2,300 to 32,800 ft), in units of 1 m (5 ft)) - Advanced memory (up to 30 manual memories of measurement date, month, time, and altitude), - Automatic recording data (highest/lowest altitude, auto accumulation (ascent/descending) memory) - Altitude trend graph, altitude difference indicator (±100 m/ ±1,000 m) - Measurement interval setting function (every 5 seconds / 2 minutes) - *Every 1 second for the first 3 minutes only *Changeover between meters (m) and feet (ft)Temperature measurement function (measurement range: -10 to 60 °C (14 °F to 140 °F), 0.1 °C (0.2 °F))*Changeover between Celsius (℃) and Fahrenheit (℉) -

  • Mobile link (Wireless linking using Bluetooth®)

  • App connectivity features: Auto time adjustment - Easy watch setting - Approximately 300 world time cities - App information - Time & place - Mission log - Location Indicator - Location Memory - Mode/Display switching customization - Auto altitude correction - Phone finder

  • Tough Solar (Solar powered)

  • Compatible band size: 145 to 215 mm

  • Case / Face size (L× W× H): 58.7 × 52.1 × 16.2 mm

  • Weight: 114 g





Orders are shipped within 3 business days or you'll get FREE EXPRESS POST.

Anything that will take longer than the 3 business days we will let you know as soon as we know and will let you know the expected arrival date. 

Bands and parts are generally 1 week to arrive but can take up to 3 weeks.

Returns & Warranties

30 Day Return Policy - return your watch for an exchange, credit note or full refund. The watch must be returned in the orginal Brand packaging and in new, unworn condition. We only ask you let us know reason for return for our information and can process the return immediately we receive it. Return postage is the responsibility of the buyer however if you prefer we can send a return label to you and simply deduct $10 from the refund. Postage paid (i.e. express post, international postage is not included in the refund amount).

Parts and bands are specially ordered and not included without prior approval in the 30 Day Return Policy.


Orders are shipped within 3 business days or you'll get FREE EXPRESS POST.


We are the official stockists of G Shock, Baby G, Casio, Edifice and Proteck


30 Day Return Policy - return your watch for an exchange, credit note or full refund

WatCh Superstore

Offical stockist

Watch Superstore is an Australian independent retailer that sources only genuine G Shock watches, Baby G watches and Casio watches from the Australian Casio distributor.