Whatever you’re doing, wherever you are — the G-SHOCK Master of G line has your back. Based on GRAVITYMASTER, MUDMASTER, and MUDMAN models that deliver peak performance in punishing conditions in the air and on land, this line features a black watch case symbolizing toughness, with accents in vivid emergency colors that capture the world of professionals involved in rescue efforts and other critical missions. Employing a structure resistant to dust, mud, vibration, and shock, the MUDMASTER GWGB1000EC delivers solar-powered timekeeping with Bluetooth® and radio control accuracy, Triple Sensor technology, and more. The powerful design ensures durability and a comfortable fit thanks to an inventive combination of materials that includes carbon fiber-reinforced resin*1 and forged metals. Use the Location Indicator feature to see the direction of a target destination via an indicator hand on the watch.

Basic Information

Case size (L× W× H)

58.7 × 52.1 × 16.2 mm

Weight

114 g

Case and bezel material

Bio-based Carbon / 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

Bluetooth: Connects to a smartphone and automatically adjusts the time

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

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