Master Of G Mudmaster Watch

SKU: GGB100-1A

Rated 4.8 out of 5
Based on 4 reviews
$524.00 USD $327.00 USD

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Indulge in the luxury of the G-Shock Master Of G Mudmaster Watch GGB100-1A, designed and engineered to withstand harsh land environments. Its high-rigidity carbon material case and metal button pipes provide superior protection against impact and rough handling, while a filter keeps mud and dust at bay. The dual back cover, made of stainless steel and shock-resistant fine resin, adds to its durability. The three-layer bezel, featuring carbon fiber inserts, is transparent and showcases the embedded carbon material. With its compact quad sensor capabilities, this watch offers compass, altitude/barometer, and temperature measurements, along with a step counter. The G-SHOCK app, equipped with a Mission Function, simplifies configuring watch settings and records altitude and route data. Experience the ultimate in durability and functionality with this mud and dust-resistant timepiece.

Feature Overview


2 Years


G-Shock Box

Case Size




Glass Material




Water Resistance

200 Meters

Band Type

Orange Rubber


Shock Resistant
Mud Resistant
Carbon Core Guard structure
Mineral Glass
Spherical Glass
200-meter water resistance
Case / bezel material: Carbon / Resin 
Resin Band
Double LED light
LED light for the face (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
Mobile link (Wireless linking using Bluetooth®)
Digital compass
Measures and displays direction as one of 16 points
Measuring range: 0 to 359°
Measuring unit: 1°
60 seconds continuous measurement
Hand indication of north
Magnetic declination correction
Direction calibration (2-point calibration, figure eight calibration, auto calibration)
Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.)
Measuring unit: 1 m (5 ft.)
Hand indication graph of altitude differential
Manual memory measurements (up to 14 records, each including altitude, date, time)
Auto log data (High/low altitudes, cumulative ascent and descent)
Others: Relative altitude readings (±100 m /±1000 m), selectable measurement interval: 5 seconds or 2 minutes (1 second for first 3 minutes only)
*Changeover between meters (m) and feet (ft)
Measuring range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
Measuring unit: 1 hPa (0.05 inHg)
Hand indication of pressure differential (±10 hPa)
Atmospheric pressure tendency graph (last 20 hours or last 56 hours)
Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure)
The atmospheric pressure tendency graph can show the last 20 minutes or last 56 minutes of measurements. The hand indication of pressure differential shows values in units of ±1 hPa.
*Changeover between hPa and inHg
Measuring range: –10 to 60°C (14 to 140°F)
Measuring unit: 0.1°C (0.2°F)
*Changeover between Celsius (°C) and Fahrenheit (°F)
Step count using a 3-axis acceleration sensor: 0 to 999,999 step count display range
Power Saving: Auto sensor sleep state entry after fixed period of non-activity
World time
38 time zones (38 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
Sunrise, sunset time display
Sunrise time and sunset time for specific date
1/100-second stopwatch
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 second to 24 hours (1-minute increments and 1-hour increments)
5 daily alarms
Hourly time signal
Hand shift feature
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second)
Digital: Hour, minute, second, am/pm, month, date, day
Accuracy: ±15 seconds per month (with no mobile link function)
Approx. battery life: 2 years on CR2025


average rating 4.8 out of 5
Based on 4 reviews
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100% of reviewers would recommend this product to a friend
Review posted
Reviewed by Lindsay S.
Verified Buyer
Rated 5 out of 5

Great Watch

I really love my g-shocks they look good and their tough. I have 25 of them now so they must be good . I'm happy with how quickly their. I recommend this product and seller.

I recommend this product
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Review posted
Reviewed by Rick Le G.
Verified Buyer
Rated 4 out of 5

My new Casio G-Shock Mudmaster GGB100-1A

Nice update to my previous Casio G-Shock watch. However, found out, one week after I purchased this that this was a run out model 🙄. The strap tends to bias the watch outwards (maybe that’s specific to my arm but I have a normal arm), making it awkward to view the watch face. Otherwise, love it.

I recommend this product
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Review posted
Reviewed by Brendan J.
Verified Buyer
Rated 5 out of 5

Mudmaster magic

Looks good , works well

I recommend this product
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Review posted
Reviewed by Jatin G., from Australia
Verified Buyer
Rated 5 out of 5

Pretty good watch. I luv

Pretty good watch. I luv it..

I recommend this product
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Shipping & Returns

Free Shipping Anywhere In Australia

    • Most orders ship within 24 hours.
    • Same Day Delivery available in Sydney, call us on 1300 725 644 for details.
    • Signature on Delivery is included on all shipments within Australia.  We ship with AusPost and StarTrack.
    • DHL Express is available for fast and secure international shipments.

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    Easy 30 Day Returns
    To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

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