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

This analog-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.

Basic Information

• Case size (L× W× H)

  58.7 × 52.1 × 16.2 mm

• Weight

  114 g

• Case and bezel material

  Resin (Bio-based) / Stainless steel

• Band

  Bio-based resin band

• Construction

  Shock Resistant
  Vibration resistant
  Mud Resistant
  Carbon Core Guard structure

• Water resistance

  200-meter water resistance

• Time adjustment

  Radio-controlled Watch; Multi band 6

• Power supply and battery life

  Tough Solar (Solar powered)

• Sensor feature

  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 inHg
  Altitude 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 (℉)

Smartphone Link/App Connectivity Features

• Smartphone Link feature

  Mobile link (Wireless linking using Bluetooth®)

• Apps

  CASIO WATCHES

• App connectivity feature

  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

Exterior

• Glass

  Sapphire crystal with anti-reflective coating

• Crown

  Screw Lock Crown

• Surface treatment

  DLC Coating bezel
  Rose gold ion plated bezel

• Compatible band size

  145 to 215 mm

• Other

  Neobrite

Watch Features

• World time

  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

• Stopwatch

  1/100-second stopwatch
  Measuring capacity: 23:59'59.99''
  Measuring modes: Elapsed time, split time, 1st-2nd place times

• Timer

  Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 minute to 60 minutes (1-minute increments)

• Alarm/hourly time signal

  5 daily alarms
  Hourly time signal

• Light

  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)

• Light color

  LED:White

• Calendar

  Full auto-calendar (to year 2099)

• Mute feature

  Button operation tone on/off

• Hand home position correction feature

  The auto hand home position correction

• Energy saving feature

  Power Saving (display goes blank and hands stop to save power when the watch is left in the dark)

• Battery display/alert

  Battery level indicator

• Run time

  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

  Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)

• Other features

  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 adjustment details

  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
  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