

⏱️ Tough Tech for Trailblazers & Trendsetters
The G-Shock Casio Mudmaster GGB100 is a rugged, mud-resistant watch featuring a carbon core guard structure for superior shock protection. It integrates Bluetooth connectivity for syncing with the G-Shock app, enabling altitude, route, and step tracking. Equipped with Quad Sensor technology—compass, altimeter/barometer, thermometer, and accelerometer—this 55.4mm analog-digital timepiece combines durability with advanced outdoor functionality, making it ideal for professionals who demand resilience and smart features in extreme environments.
| ASIN | B07W43VGYC |
| ASIN | B07W43VGYC |
| Additional Features | Accelerometer, Barometer, Compass, Shock Resistant, Thermometer, World Time |
| Band Color | Gray |
| Band Material Type | Resin |
| Band Width | 24 |
| Bands | 1 |
| Batteries | 1 Lithium Metal batteries required. |
| Best Sellers Rank | #282,809 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #1,002 in Men's Wrist Watches |
| Brand Name | G-Shock |
| Case Diameter | 55.4 Millimeters |
| Case Material Type | 55.4 mmx 53.1 mm |
| Case Thickness | 6 Millimeters |
| Character | Fashion |
| Clasp Type | Buckle |
| Closure Type | Buckle |
| Crystal | Mineral Glass |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,075) |
| Date First Available | August 5, 2019 |
| Department | mens |
| Dial Color | Black |
| Display | Analog-Digital |
| Embellishment Feature | Crystal |
| Face Style | Plain |
| Global Trade Identification Number | 00889232235486 |
| Included Components | G-Shock app, User Manual |
| Item Weight | 92 Grams |
| Item model number | GGB100-1A |
| Manufacturer | Casio |
| Manufacturer | Casio |
| Manufacturer Part Number | GGB100-1A |
| Manufacturer Warranty Description | 1 Year Manufacturer |
| Model Name | Mudmaster |
| Model Number | GGB100-1A |
| Pattern | Solid |
| Power Source | Battery Powered |
| Product Dimensions | 5 x 5 x 5 inches; 3.25 ounces |
| Shape | Round |
| Sport Type | Walking |
| Strap Type | Two Piece Strap |
| Style Name | sport |
| Theme | Plain |
| UPC | 889232235486 |
| Unit Count | 1 Count |
| Warranty Type | Manufacturer |
| Watch Movement Type | Quartz |
| Water Resistance Depth | 200 Meters |
| Water Resistance Level | Waterproof |
D**E
Love the watch, app not so much.
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.
J**Y
Indestructible
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.
K**N
My favorite watch.
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.
M**K
Great watch.
Great rugged look, very nice watch.
T**.
A great watch at a very fair price!
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!
J**S
G-Shock the best
Comfortable to wear. Works in all weather conditions.
C**K
Another awesome Casio
Absolutely love this watch it looks so much better in person yes it is a big watch but very comfortable to wear and it is not heavy at all.
A**Z
muy bueno
R**1
Very happy with the watch. At first I'm having second thoughts if this is fake or genuine casio watch due to its low price compare to other seller, but when it arrived, it was a genuine casio G SHOCK GGB 100 Mudmaster. And lastly, received the item two days after I placed the order, and it comes in good packaging. I will definitely recommend and buy from this seller ozdigitalwatch.
K**A
Ho riparato 2 volta mila rotto di nuovo .. ! Non ha ne meno garanzia
B**O
Problem with changing battery
J**N
Just an awesome watch!!!! It looks even better in person, a butt load of features and its built like a tank. I own many watches and this is my second G-Shock Mudmaster, but I think this one might be my favorite out of them all. Tough as nails and really eye catching time piece!
Trustpilot
2 weeks ago
1 week ago