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G-Shock

G-Shock Casio Mudmaster Master of G Watch GGB100

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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Apr 13
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Color: Black/Grey


Description

This is a model from the G-Shock Mudmaster Series, designed for use in extreme environments scattered with rubble, dirt and debris, and uses carbon materials. The use of high rigidity carbon on the case keeps damage and deformation at bay, and ensures a high level of airtightness and shock resistance. This model also features a construction that protects against the invasion of mud, a stainless steel panel back, and a back cover made of shock- resistant fine resin embedded with glass fibers, giving it a high level of resistance to dust and mud. The bezel also uses three layers of fine resin with carbon fiber inserts and is designed to resemble a portable gasoline can that could be found on off-road vehicles. Function-wise, this model comes with compass, altimeter/barometer, temperature reader and pedometer. In addition to being able to easily correct the time using the dedicated CASIO WATCHES app, there are lots of other useful features including the Mission Log feature, which automatically records in the app altitude data obtained from the watch and route data obtained by your smartphone. This is a toughness watch that supports you in taking quick decisions and accurate actions.

Product Dimensions ‏ : ‎ 5 x 5 x 5 inches; 3.25 ounces


Item model number ‏ : ‎ GGB100-1A


Department ‏ : ‎ mens


Batteries ‏ : ‎ 1 Lithium Metal batteries required.


Date First Available ‏ : ‎ August 5, 2019


Manufacturer ‏ : ‎ Casio


Product Warranty: For warranty information about this product, please click here


Best Sellers Rank: #281,744 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #1,087 in Men's Wrist Watches


#1,087 in Men's Wrist Watches:


Display: Analog-Digital


Watch Movement Type: Quartz


Additional Features: Accelerometer, Barometer, Compass, Shock Resistant, Thermometer, World Time


Power Source: Battery Powered


Strap Type: Two Piece Strap


Water Resistance Depth: 200 Meters


Sport Type: Walking


Clasp Type: Buckle


Water Resistance Level: Waterproof


Embellishment Feature: Crystal


Closure Type: Buckle


Style Name: sport


Shape: Round


Band Color: Gray


Dial Color: Black


Theme: Plain


Pattern: Solid


Face Style: Plain


Character: Fashion


Brand Name: G-Shock


Model Name: Mudmaster


Included Components: G-Shock app, User Manual


Model Number: GGB100-1A


Item Weight: 92 Grams


Global Trade Identification Number: 86


Manufacturer: Casio


Manufacturer Warranty Description: 1 Year Manufacturer


UPC: 889232235486


Manufacturer Part Number: GGB100-1A


Unit Count: 1 Count


Band Material Type: Resin


Case Material Type: 55.4 mmx 53.1 mm


Crystal: Mineral Glass


Case Diameter: 55.4 Millimeters


Band Width: 24


Case Thickness: 6 Millimeters


Bands: 1


Warranty Type: Manufacturer


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Apr 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Love the watch, app not so much.
Color: Black/Grey
The Casio Men's G-Shock Mudmaster GGB100-1A is a true masterpiece of engineering and design, combining rugged durability with advanced features to create a watch that exceeds expectations in every way. From its robust construction to its innovative technology, this timepiece sets a new standard for performance and reliability. One of the standout features of the Mudmaster GGB100-1A is its Carbon Core Guard structure, which provides exceptional durability while keeping the watch lightweight and comfortable to wear. This watch is built to withstand the toughest conditions, making it the perfect companion for outdoor adventures, extreme sports, or everyday wear. Equipped with Quad Sensor technology, including a compass, altimeter/barometer, thermometer, and step tracker, this watch offers a wealth of useful information for outdoor enthusiasts and professionals alike. The connected features allow you to sync the watch with your smartphone for enhanced functionality and customization, adding a new level of convenience to your daily routine. The design of the Mudmaster GGB100-1A is both rugged and stylish, with a grey resin band and case that exude a sense of strength and durability. The large, easy-to-read display is protected by scratch-resistant mineral crystal, ensuring that the watch remains looking great even after years of use in challenging environments. Whether you're a hiker, explorer, or simply someone who appreciates high-quality watches, the Casio Men's G-Shock Mudmaster GGB100-1A is sure to impress. With its exceptional build quality, advanced features, and rugged design, this watch is a five-star product that delivers on all fronts. I highly recommend it to anyone looking for a reliable and feature-packed timepiece that can stand up to whatever challenges come its way. My only drawback is the app. No connectivity for AppleHealth for steps and calories which is ridiculous in 2024. ... show more
Reviewed in the United States on March 18, 2024 by D. Couse
    • Indestructible
Color: Black/Orange
Review Image by Joe Dively
Love this watch. G shock is the greatest watch for work. I don’t have to worry about snacking it off things and it looks great. Well worth the money.
Reviewed in the United States on January 19, 2026 by Joe Dively
    • My favorite watch.
Color: Black/Orange
Review Image by Kevin
Review Image by Kevin
Review Image by Kevin
Review Image by Kevin
Edit - 9/25/25 - it's $245 now. I paid more for my All Black Rangeman. Now almost $60 cheaper then what I paid. EDIT - this is listed for $258 right now. If you’ve been waiting - ive never seen it that low. I bought this to splurge on something for myself, and I’m really happy with it. My favorite G shock and ive been looking at mudmasters for a while now. It does a whole bunch of things that ill never use, but having the app to change alarms and settings on the watch by using your phone is much easier then not having it.. The step counter is also kinda fun. Its not very heavy either which is really nice. The solid construction and quality of build is very obvious. I like the orange band which i wasnt sure i would. Most of my other watches are all black and the orange color adds some nice detail and makes it stand out. I was originally planning on buying an all black model, but I’m glad i didnt. Ive added a screen protector to mine, which you might notice in the pictures. Yours will not come with that. I work a labor job and I’m not planning on beating the hell out of it, so i do take it off if i know ill be doing something destructive - but it does get bumped every now and then - so if it does get scarred up the bezel is replaceable. I have many G shocks and this is the most expensive one out of them so far. They make plenty of other options if you want something you don’t have to care about. I recommend the square face model if thats what you want. Its a basic watch, easy to read, small, thin, practically weightless and only about $40. This mudmaster is not that. While I’m sure it will hold up to real abuse - i for one dont plan on finding out. I dont wear this everyday since i have others, but so far the screen protector has also held up nicely. That is available on Amazon too. I think i paid $303 for this watch, and now its down to about $280 in the ever changing amazon prices - so keep an eye on the prices if youre not in a rush. ... show more
Reviewed in the United States on May 13, 2023 by Kevin
    • G Shock quality
Color: Black/Orange
Exactly as expected and even better looking in person
Reviewed in the United States on March 11, 2026 by Michael Jenkins
    • A great watch at a very fair price!
Color: Black/Orange
The delivery went off without a hitch! The delivery man was courteous, knocked on the door to alert me that there was a delivery and I appreciated his demenior . He did a good job,The Casio G-Shock is the typical first class product that they all are, I set it to the correct time with the Bluetooth between the watch and the Smart Phone in a few minutes. It's a great time piece, I'll have it forever! ... show more
Reviewed in the United States on February 9, 2026 by Terry N.
    • G-Shock the best
Color: Black/Orange
Comfortable to wear. Works in all weather conditions.
Reviewed in the United States on March 3, 2026 by J Kitts

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