Casio has announced the launch of the new G-SHOCK MUDMASTER GWG-B1000 model. To be released 13th October 2023, this dust-proof and mud-proof watch with metal exterior parts is available in three versions.
Known for its reliability and robustness, the G-SHOCK Master of G Series MUDMASTER has been designed for environments where dirt and debris accumulate.
The new Casio G-SHOCK MUDMASTER GWG-B1000 watch uses a sturdy metal exterior and has a rugged design that stands out with its polyhedral form while maintaining its impact resistance.

In order to protect the windshield, which is susceptible to impacts, the protector parts on the 12 o’clock and 6 o’clock sides are made of metal treated with DLC to improve wear resistance. It was manufactured using a lengthy process of forging the bezel into the shape and then carving out the guard parts, creating a complex shape made of metal.

The guard parts of the front buttons use MIM (metal injection molding) processing, making it possible to create a precise shape.

The Casio G-SHOCK MUDMASTER GWG-B1000 is equipped with a triple sensor that can measure direction, barometric pressure/altitude, and temperature, as well as a smartphone link function for the first time as a radio solar compatible model.
It works with a dedicated app, and is equipped with a location indicator with a small hand on the in-dial that points in the direction of the location recorded with the app, and a mission log that allows you to check your activity history on the app.
Secured with a stainless steel case-back, the Casio G-SHOCK MUDMASTER GWG-B1000 watch is water-resistant up to 200 meters.
Technical details
Model: Casio G-SHOCK MUDMASTER GWG-B1000
References
GWG-B1000-1A
GWG-B1000-1A4
GWG-B1000-3A
Case
Case: Resin (biomass)
Bezel: Stainless steel with Gray or Pink gold IP
Carbon core guard
Impact-resistant, dust-proof/mud-proof and vibration-resistant structure
Dimensions: 58.7×52.1×16.2mm
Sapphire glass with internal anti-reflection coating
Screw lock crown
Surface treatments: IP (bezel part)/ DLC treatment (stainless steel part)
Water resistance: 20 ATM
Radio wave reception
JJY (Japan): 40 kHz (Fukushima station) / 60 kHz (Kyushu station), WWVB (USA): 60 kHz, MSF (UK): 60 kHz, DCF77 (Germany): 77.5kHz, BPC (China): 68.5kHz
Automatic reception (up to 6 times/day, up to 5 times/day in China only), manual reception
Direction measurement function
Measures 16 azimuths and azimuth angles (0 to 359°), continuous direction measurement (60 seconds), north direction pointer function, bearing memory function, automatic horizontal correction function, magnetic declination correction function, direction correction function
Barometric pressure measurement function
Measurement range: 260 to 1,100 hPa, 1 hPa unit, barometric trend graph display (displays the past 20 hours), barometric pressure difference indicator (±10 hPa), barometric trend information alarm (arrow and *The barometric pressure trend graph can be changed to measure every 2 minutes . In that case, it is the past 20 minutes.
Altitude measurement function
Relative altimeter (measurement range: -700 to 10,000m, in 1m increments), altitude memory (manual memory of up to 30 measurement date, time, and altitude), automatically recorded data (maximum/minimum altitude, automatic integration (ascent/descent) ) memory), altitude trend graph, altitude difference indicator (±100m/±1,000m) measurement interval setting function (every 5 seconds/2 minutes) *every 1 second for the first 3 minutes only
Temperature measurement function
Measurement range: -10 to 60℃, 0.1℃ increments
World time
Time display in 55 cities around the world (38 time zones, automatic summer time setting function) + UTC (Coordinated Universal Time), home time city switching function
Stopwatch
1/100 second, 24 hour meter, with split
Timer
Set unit: 1 minute, maximum set: 60 minutes, measured in 1 second increments
Alarm
5 time alarms, time signal
Mobile link function
Functional linkage via Bluetooth® communication with compatible mobile phones
Automatic time correction, easy clock setting, world time in approximately 300 cities, app information, time & place, mission log, location indicator, location memory, mode customization, automatic altitude correction, mobile phone search
Other features
Sunrise/sunset time display, battery indicator display, fully automatic calendar, 12/24 hour display switching, operation sound ON/OFF switching function, LED backlight (full automatic light, super illuminator, afterglow function, afterglow time switching) (1.5 seconds/3 seconds included)
Power supply used
Tough solar (solar charging system)
Continuous drive time
When using the function without solar power generation from full charge: Approximately 6 months
When using power saving mode: Approximately 24 months
Strap
Resin band (biomass plastic)
Weight
Approximately 114g
Suggested retail price
121,000 yen (tax included)