Casio G-Shock Mudmaster GG-B100-1A black
Casio G-Shock Mudmaster GG-B100-1A3 green on wrist
Casio G-Shock Mudmaster illuminated
Casio G-Shock Mudmaster GG-B100-1A3 green, back
Casio G-Shock Mudmaster GG-B100-1A3 green
G-SHOCK Mudmaster Carbon Fiber Watch

Item #: 10835-BLK

G-SHOCK Mudmaster Carbon Fiber Watch

5 reviews
Regular price $380.00
Up To 20% Off
Free Shipping: USA Orders $85+, Worldwide $99+ (more details)

Product Description

Video Overview

Made with Real Carbon Fiber

The GG-B100 G-Shock Mudmaster uses real carbon fiber in what they call the Carbon Core Guard Structure. The idea is an airtight case that protects the modules and filters against the protrusion of mud.

Casio G-Shock Mudmaster exploded view

Mud, Dust and Shock Resistant

The G-Shock Mudmaster was designed and engineered to withstand rough land environments. The case is made of high-rigidity carbon material to protect against damage and deformation due to impact and other rough treatment, while metal button pipes ensure a tighter seal against the external environment. A filter further protects against the invasion of mud, for the high level of dust and mud resistance required when in severe environments. In addition, the dual back cover consists of a stainless steel panel back and an outer cover made of shock-resistant fine resin embedded with glass fibers. The bezel is formed of three layers of fine resin with carbon fiber inserts. The top layer is transparent, resulting in a bezel that shows the embedded carbon material.

Dirty Casio G-Shock Mudmaster

Technology Out The Wazoo

This may be as smart as a non-smart watch gets. The Mudmaster has quad sensors which can do the following on the dial:

  • Thermometer
  • Barometer
  • Altimeter
  • Digital Compass
  • Step Counter

It has a super illuminator using a high brightness LED so you can see in the dark.

Finally, it has Bluetooth to connect to your phone through the G-SHOCK Connected app (iOS and Android). The app allows you to extend the capability of your watch even further.

Casio G-Shock Mudmaster with app


Case Size: 55.4 mm. x 53.1 mm. x 19.3 mm.

Actual Item Weight

92 grams (3.25 ounces)

Full Specifications

  • Shock Resistant
  • Mud Resistant
  • Carbon Core Guard structure
  • Mineral Glass
  • Spherical Glass
  • Neobrite
  • 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)
  • Altimeter
    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)
  • Barometer
    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
  • Thermometer
    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
  • LED:White
  • Very strong in certain applications
  • Ultra lightweight
  • Modern, high-tech look
  • A next-generation luxury material
  • Used in really cool applications like exotic cars (Ferrari, Lamborghini), NASA/Aerospace, high-end sporting equipment, yachts and more.

Learn More


USA: Orders $85+ ship free, otherwise rates start at just $5. Express options also available. For more details, please read here.

Canada, Australia, Europe: Orders $99+ ship free, otherwise shipping starts at just $7.49 for many small and lightweight items. See our international page for more information.

Other Countries: Due to Covid-19 related issues, free/standard shipping for shipments outside the USA have been temporarily disabled. We are offering express only at this time. For more details, please read here.


For our full shipping policy and method explanations, click here.


At Carbon Fiber Gear, we take great pride in the quality of our products. We offer a 30-day return policy for any unused and unopened items unless otherwise stated on the product page or if the item is a special order/customized item. See our full return policy here.

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Customer Reviews
5.0 Based on 5 reviews
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Filter Reviews:
Derrick H.
United States United States
Great looking and functional

I like how the watch syncs with my phone and tracks my steps and position if needed..It nice looking and chunky..

United States United States
Rugged and Stylish

This is one of my favorite G-Shocks. The Matte Carbon Fiber Bezel provides great looks and true function. I have owned this watch for a while and continue to discover features and little details that set it apart from others. The Single Anodized Gold Button is one example. I was also very impressed with the output of the light- it will truly light up an entire room if needed.

United States United States
G Shock Mudmaster / Carbon Fiber / CASIO GG-B100

Amazing look. It feels perfect on my wrist. The features are incredible cool and practical. The Bluetooth feature is sick. Both cellphone and watch sync to perfection. Extremely please with this piece.

Carbon Fiber Gear G-SHOCK Mudmaster Carbon Fiber Watch ReviewCarbon Fiber Gear G-SHOCK Mudmaster Carbon Fiber Watch ReviewCarbon Fiber Gear G-SHOCK Mudmaster Carbon Fiber Watch Review
Aref K.
Australia Australia
G Shock Mudmaster with Carbon Fiber Bezel

Awesome Watch, lots of functions and easy to use. Beautiful carbon Fiber inlaid bezel really makes the watch pop.

Arless S.
United States United States
Exactly what I wanted

The watch came properly packed. There are many features to this watch, gonna take time to learn all of them. Excellent watch

Carbon Fiber Gear G-SHOCK Mudmaster Carbon Fiber Watch Review