The G-SHOCK GWG-B1000 Master of G Mudmaster is an analog-digital timepiece built with a robust metal and carbon fiber-reinforced resin exterior for outstanding durability in extreme on-land environments. It features a newly developed guard structure combining stainless steel and bio-based resin components with a scratch-resistant sapphire crystal.

Equipped with Tough Solar power and Multi Band 6 radio control, the watch automatically maintains accurate timekeeping and links wirelessly to smartphones via Bluetooth. Built-in Triple Sensor technology provides continuous direction readings, barometric pressure, altitude, and temperature data directly on your wrist.

Practical outdoor features include a dedicated Location Indicator hand, 200 m water resistance, mud and vibration resistance with αGEL, and high-brightness Super Illuminator double LED lights.

Key Features

Case size (L× W× H)	58.7 × 52.1 × 16.2 mm
Weight	114 g
Case and bezel material	Bio-based Resin / Stainless steel
Band	Bio-based resin band
Construction	Shock Resistant, Vibration resistant, Mud Resistant, Carbon Core Guard structure
Water resistance	200 m 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: 260~1,100 hPa (7.65~32.45 inHg), 1 hPa (0.05 inHg)), Barometric pressure trend graph display (past 20 hours displayed), pressure difference indicator (±10 hPa) Barometric pressure trend information alarm. 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)). Temperature measurement function (measurement range: -10 to 60 °C (14 °F to 140 °F), 0.1 °C (0.2 °F))
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
Glass	Sapphire crystal with anti-reflective coating
Crown	Screw Lock Crown
Surface treatment	DLC Coating bezel, Gray ion plated bezel
Compatible band size	145 to 215 mm
Other	Neobrite
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)

Highlights

Shock resistant
Resistant to mud
20 bar water resistant
Timekeeping accuracy
Stable solar power
Smartphone connectivit

Frequently asked questions

What is the water resistance rating of the GWG-B1000-1A?

The watch features a 200 m (20 bar) water resistance rating.

How is the watch powered?

It is powered by Casio Tough Solar technology, which converts light into energy to charge the built-in rechargeable battery.

What sensors are built into this timepiece?

It is equipped with a Triple Sensor system including a digital compass, an altimeter/barometer, and a thermometer.

What materials are used for the case and glass?

The case is crafted from bio-based resin and stainless steel with a Carbon Core Guard structure, fitted with a scratch-resistant sapphire crystal with anti-reflective coating.

Does the watch support wireless connectivity?

Yes, it supports Mobile Link via Bluetooth to connect with the CASIO WATCHES smartphone app for auto time adjustment and navigation features.

How long does the battery operate on a full charge?

The rechargeable battery operates for approximately 6 months under normal use without light exposure, and up to 24 months when stored in total darkness with Power Saving enabled.

Casio G-Shock Mud Master Black Dial Solar Watch GWG-B1000-1ADR