Search  for anything...
Casio

Casio GGB100-1A3 Master of G Mudmaster Men's Watch Green 55mm Carbon

  • Based on 567 reviews
Condition: New
Checking for the best price...
$420.00 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 1 left in stock, order soon!
Fulfilled by Altivo Timepieces
Arrives Wednesday, Jul 8
Order within 14 hours and 25 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Description

From Casio G-Shock, the innovators of tough timekeeping, comes the GGB100 Master of G Mudmaster watch series that has been designed to endure the toughest environments. This watch features a carbon core guard structure case, in black with grey accents, that allows the internal mechanics of the watch to be protected from shock-induced damage. This watch is mud resistant with metal buttons that form a tight seal on the case, a dual back cover that consists of a stainless steel panel back and an outer cover made of shock resistant fine resin embedded with glass fibers, and the bezel has three layers of fine resin with carbon fiber inserts. The Quad Sensor capabilities provide instant access to a compass, altitude/barometer, thermometer, and an accelerometer that keeps track of your step count. Additionally, this watch connects via Bluetooth to a special G-Shock app that helps with the configuration, as well as records altitude data, route information, and step counts. These recordings are used to create an activity log you can use for tracking. Mode Switching Customization allows you to turn on and off individual modes and their sequence, for a personalized feel. This capable watch is finished with a olive green resin band. Features of this highly functional watch include:Shock ResistantMud ResistantCarbon Core Guard structure200 meter water resistanceOlive green resin bandCarbon and resin caseNeobriteDouble LED lightMobile link (Wireless linking using Bluetooth(R))Digital compassAltimeterAuto log data (High/low altitudes, cumulative ascent and descent)BarometerThermometerStep count using a 3-axis acceleration sensor: 0 to 999,999 step count display rangePower Saving: Auto sensor sleep state entry after fixed period of non-activityWorld time with 38 time zonesSunrise, sunset time display1/100-second stopwatchCountdown timer5 daily alarmsFull auto- calendar (to year 2099)12/24-hour formatAnalog: 3 hands (hour, minute (hand moves every 10 seconds), second)Digital

Item model number ‏ : ‎ GGB100-1A3


Department ‏ : ‎ mens


Batteries ‏ : ‎ 1 CR123A batteries required.


Date First Available ‏ : ‎ August 2, 2019


Manufacturer ‏ : ‎ Casio


Best Sellers Rank: #1,022,240 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #4,938 in Men's Wrist Watches #9,523 in Men's Shops


#4,938 in Men's Wrist Watches:


#9,523 in Men's Shops:


Customer Reviews: 4.6 4.6 out of 5 stars (567)


Display: Analog-Digital


Watch Movement Type: Japanese Quartz


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


Power Source: Battery Powered


Strap Type: Two Piece Strap


Water Resistance Depth: 100 Meters


Sport Type: Walking


Clasp Type: Buckle


Water Resistance Level: Water Resistant


Embellishment Feature: Crystal


Closure Type: Buckle


Style Name: Military


Shape: Round


Band Color: Green


Dial Color: Black


Theme: Military


Pattern: Solid


Face Style: Military


Character: Fashion


Brand Name: Casio


Model Name: Mudmaster


Included Components: Bio-based resin band


Model Number: GGB100-1A3


Series Number: 100


Global Trade Identification Number: 87


Manufacturer: Casio


UPC: 889232235387


Manufacturer Part Number: GGB100-1A3


Unit Count: 1 Piece


Age Range Description: Adult


Item Type Name: Sport Watch


Band Material Type: Resin


Case Material Type: carbon/resin


Crystal: Mineral Glass


Case Diameter: 55.4 Millimeters


Band Width: 24 Millimeters


Case Thickness: 19.3 Centimeters


Bands: 1


Warranty Type: Manufacturer


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 8

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Light weight, feature packed ... hands down great buy!!! Zero regrets. Light weight, feature packed ... hands down great buy!!! Zero regrets.
Review Image by Ed B.
Review Image by Ed B.
Review Image by Ed B.
BLUF: Great watch, worth every penny. While the watch is a BIG watch, make no mistake about that, it wears very well and is so light due to the carbon core, carbon fiber bezel, etc. that I really don't notice it at all. Not nearly as heavy as my Citizen E365 or EcoZilla dive watches ... love those too! At this price point, you won't find a more tech infused watch that really has all the functionality you need / want. Granted, you could step up to the MudMaster GWG-B1000 to add Solar and Multiband 6, but for me, it wasn't worth the additional $480.00, at least for now. Won't go into all the sensors that you know this has, but will say the Bluetooth connectivity with the Casio Watches App is a great feature. I'm starting to like that in my watches. Out of the G-Shock can, to my wrist, the watch was set up in a matter of minutes by simply pressing the connect button, quickly connecting the App, and since I already had my basic info in the App from my other BT Casio watches, I simply sent that info to the watch ... couldn't be any easier for such a tech infused watch. The durability, fit, and finish of this watch is exceptional! Not much else to say other than great bang for the buck! Fantastic add to my watch collection, don't think about it, just get it ... thank me later!! Very Highly Recommended!!! ... show more
Reviewed in the United States on June 6, 2025 Reviewed in the United States on June 6, 2025 by Ed B.
    • Updated review Updated review
Review Image by chris lopez
Review Image by chris lopez
Review Image by chris lopez
Review Image by chris lopez
Review Image by chris lopez
Review Image by chris lopez
Review Image by chris lopez
Now that I have had this watch for some time now I figured I would do a little bit better of a review. This G-Shock is really a stunning watch. It definitely isn’t as big as the GWG-1000 it is lighter on the wrist and does sit more comfortably on the wrist as well. It comes with the carbon core guard that the GWG-1000 doesn’t but I believe the 2000 does have. This has a quad sensor which more G-Shocks need to have. You get the compass, altimeter, barometer/temperature, and step counter. The watch also has the Bluetooth connected app capability, which is fine but I could go without it. In its place I would prefer atomic timekeeping. This watch is nearly perfect in my honest opinion. If it had the multiband 6 and tough solar this watch would be pretty much unbeatable. I don’t need this to be a fitness watch so all the functions it has is all that’s really needed.. If Casio ended up adding the atomic and solar in the future I would buy one in each color way. The domed glass is nice but if I remember correctly it is just the standard mineral crystal which is still fine. I have banged this watch almost on a daily basis on this stupid doorknob in our hallway, and not a scratch, crack, dent, or anything. This watch has also been on it’s fair share of adventures and has survived with ease. This watch is just as rugged and durable and capable as the GWG-1000 and just about any other G-Shock. This watch is lightweight, durable full of functions that can help you out in the right circumstances. With the connected app you can track your steps do mission logs and whatnot. With the app you have close to full control over the watch. You can’t go wrong with a Mudmaster. ... show more
Reviewed in the United States on February 28, 2022 Reviewed in the United States on February 28, 2022 by chris lopez
    • Great over all A/B/C watch
5-year update — original battery still going strong. In the first 30 days, the main board stopped syncing. It was replaced under warranty, and since then it’s been rock-solid. I’m honestly amazed the original battery has lasted this long. I only use the A/B/C functions maybe five times a year, strictly when needed. Ruggedness-wise, it’s hard to beat. I suspect the “one-year battery life” people often mention comes from frequent use of the A/B/C functions and leaving the backlight on auto. Daily syncing also seems unnecessary to me. Mine only drifts about two minutes per month. I sync once a month or only as needed. If you’re constantly syncing and using every feature like a toy, then yes—you’ll probably get around a year of battery life. But if you use it as a tool and not a gadget, I’d bet you’ll get five years or more. And if you do need to replace the battery, it’s easy. I would definitely recommend it. ... show more
Reviewed in the United States on February 8, 2026 by Michael C. Sasso
    • Bulky but nice looking Bulky but nice looking
Review Image by monica
Watch is really bulky so if you dont like large watches think it twice. Also, the large button that connects pushes pretty hard on your hand if bend your wrist up. It is rugged and very nice looking I get plenty of compliments. Other than that I recommend it.
Reviewed in the United States on February 11, 2026 Reviewed in the United States on February 11, 2026 by monica
    • An amazing piece of kit. Tech that's fun and useful, and t looks killer!
I own so many, too many watches. Most are three handed analog mechanical self-winding watches. But I have not abandoned digital. G-Shock is a range I cannot speak highly enough. Love love love their squares, but I had never been tempted by the well over 50mm+ sort like this MudMaster, and the like, until now. . Why did I wait, and deny a chance to enjoy these before? Kicking myself a bit, honestly. I have a 7.5" wrist, so their bulk is easily manageable for me. The features and ease of use on this one is very impressive, particularly with the phone app. No need to get into it all, go to YouTube for all the specifics. It rocks! Okay, no solar recharge. I saved a good $100 to not have that, and a new battery every few years is $2 As bulky as it is, the light weigh, fit, and comfort is better than most of my other watches. I happen to love its bad a$$ looks to boot. Go G! ... show more
Reviewed in the United States on November 16, 2023 by Erik Ewald
    • Best watch, best Price! Best watch, best Price!
Review Image by M. Girgis
Review Image by M. Girgis
By far one of the best time pieces I own, very easy to read and to adjust, it combines great looks with durability, and functionality. I absolutely LOVE this watch and I would highly recommend it.
Reviewed in the United States on September 10, 2025 Reviewed in the United States on September 10, 2025 by M. Girgis
    • Rather large, but with fantastic features!
I've had this watch for a little more than a year, now, and love it. It's one of the few G-Shocks that has a step-counter in addition to the ABC+T (altimeter/barometer, compass, thermometer). I only have two complaints. First, in my experience, Casio treats lume (glow-in-the-dark) as an afterthought on all "entry-level" G-Shocks (those priced below ~$800 to ~$1000, and higher). What little lume there is, lasts only a few minutes and, despite huge index marks, only a tiny, little "dash" in the chapter ring is actually lumed. And those tiny, little dashes have no differentiation between them; there's no way to tell which one is 12 o'clock. If it's not on your wrist at night, you could be holding it upside down with no way to know. If you want to see the time in the dark, you need to be prepared to be blinded by the ridiculously intense LED light. On the upside, the LED light doubles as a decent flashlight, if you're into that sort of thing. The long and short of it is that if you're a "lume monster" and want lume galore - not an LED light - that is as good as radioactive, without a slow, painful ending, this GGB100 won't scratch that itch. You would be better served by most Seiko watches, some Citizen watches, or any number of micro-brands like Wise, Erebus, Islander, Phoibos, San Martin, Addiesdive, Steeldive, Berny, etc., or look to Tritium watches from Luminox, Deep Blue, Aragon, Marathon, Protek, Isobrite, Epoch, etc. Tritium watches do contain radioactive components, but the radiation is too weak to escape from the Tritium tubes, much less the watch case, so they're very safe, when inside the watch. My second complaint is that the watch is not solar powered. I knew that going in, but it's one of the only 2 things I don't like about the watch. Obviously, the conventional battery (approx 2 years, estimated by Casio) did not stop me. Otherwise, this GG-B100 has all the bells and whistles you could ever want. Want to know how far away "home" is, and in what direction, (as the crow flies) it can do that! Want to see the trip you just took around town, on a map, it can do that too. I'm pretty sure it does everything, except wash the dishes. And it automatically gets time from an atomic clock (via Bluetooth) four times a day... Rated at ±15 seconds per month without sync, the watch is never more than ~⅒ second from atomic time while it's in range of your smartphone. Very nice, indeed! This is a rather large, chunky watch. Personally, I like that because I have gargantuan 8¼” to 8½” wrists and any watch smaller than 44mm starts looking small on me. Below 40mm, it starts to look like I'm wearing women's watches. I know some men are very aware of their "small" wrists and prefer smaller watches (≤39mm) - nothing wrong with finding a good-fitting watch that you like. Just keep in mind this GGB100 is a whopping 51.3mm wide, with an enormous 55.4mm lug-to-lug. No two ways about it, it's huge! Like many other G-Shock watches, the lugs and watch bands are proprietary, so you're "almost" locked into genuine Casio parts. "Almost" because some on-line merchants, including some here on Amazon, have lug adapters for this and many other G-Shocks. The upside is that you can use just about any watch strap or bracelet on your G-Shock. The downside is that if you think a 55.4mm lug-to-lug is way too big, strap in, 'cause you ain't seen nothin' yet! The other important thing to me is that this watch is damn near indestructible. The carbon fiber weave pattern in the bezel isn't just for show; it's actual, woven carbon fiber. And, the screws around the bezel are not decorative, either... The bezel can be replaced if it becomes too damaged. I'm never very careful with any of my watches - dings off door knobs, tables, chairs, etc. are a way of life for my watches. I don't worry with this tank of a watch on my wrist. If you're into largish G-Shocks, you'll love this one! ... show more
Reviewed in the United States on July 22, 2025 by John
    • Most watches I look forward to taking off this one I want to keep on
I’m impressed with this watch so far . I recently purchased a rangeman g shock quad sensor but it wasn’t a watch I wanted to wear and I returned it . This watch I love an guess I’m more of an anolog guy then digital . This to me is a gorgeous watch that I want to wear , I’m in my fifties an it’s safe to say I’ve only had a watch on my wrist for a total of 15 yrs in all of my life . I don’t like wearing a watch period . I got this watch simply as a useful devise in the backcountry an thought I would use it just for that . That being said I thought this would serve as a tool maybe 30 days out of a year an sit on the self the rest of the time . I like this watch so much I an want to wear it everyday , this is to my amazement ! So I love the looks an feel . The features are great an the Bluetooth app makes it easy an a no brainer for someone like me . I connected it to the app an everything was so easy to set up . Yeah I wish it was solar but I’ll except that I’ll have to change the batterie in it every 2_3 years ,oh well my hearing aids needs battery’s every 4 days so no Biggie ... show more
Reviewed in the United States on July 23, 2020 by R W.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...