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Casio G-Shock GG-1000-1A5 Mudmaster Watch Review

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

Beyond the 5000 and 5600 lines, of all relatively affordable G-Shocks it is the Mudmaster collection that speaks to me the most. This led me to review the Casio G-Shock GG-1000-1A5 Mudmaster, curious to find out if it could justify its considerable price premium over this reviewed 5600 that I love and wear often.

Our Zach has reviewed the bigger brother of this piece, the GWG-1000-1A3, which, for a bit over twice the price of this $320 GG-1000 range, offered a slew of functionality in a bigger size that I figured I could live without – including an altimeter, barometer, “Smart Access,” and the considerably larger and heavier case.

Zach has given a solid run-down on where the Mudmaster fits into the somewhat confusing hierarchy of Master Professional and Twin-Sensor ranges of purpose-built G-Shock watches, so I’ll just briefly focus on what makes the Mudmaster stand out in general and quickly get to the nitty-gritty of the Twin Sensor GG-1000-1A5.

About The Mudmaster Collection

The professionals who rock a Mudmaster are some of the best brand ambassadors I can think of – certainly many will find them more relatable and convincing than millionaire golfers and actresses. I remember how I was surprised to learn that G-Shocks named after a given field of use were specifically designed for relevant scenarios – admittedly, perhaps my cynical side got the best of me before.

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

The video above was done with a USAR (Urban Search and Rescue) team and it gives one a good idea about the circumstances the Mudmaster was designed to work well under. There’s plenty of tough impacts as these guys climb through ruined buildings, tunnels, and river banks – further worsened by powerful vibrations through extended and repeated periods when using power tools, as well as, you guessed it, a generous amount of abrasive and intruding mud and high velocity water.

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

Here’s how the higher-end GWG-1000’s case is constructed. The GG-1000 in some critical ways is similar.

To be fair, a very well-built, ordinary quartz watch and especially a lower-end G-Shock could withstand a lot of these elements. But, it would be only a matter of time before the cumulative effects of such a wide range of hardships would destroy either the seals, the movement, or any of the functionalities.

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

The specially developed Alpha-Gel that provides G-Shock’s famed shock absorption.

As much as I respect the GWG – the most expensive variant that Zach reviewed – I find it a bit too large and too complicated to believe it to be actually useful in the field. It’s more of a high-tech gadget version of the useful GG-1000-1A5 that we are looking at today, than a real alternative. This neatly leads us to…

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

The Casio G-Shock GG-1000-1A5 Mudmaster Exterior

You don’t have to be looking at – or even wearing – the Casio G-Shock GG-1000-1A5 Mudmaster to get a solid impression of its truly purpose-built design. Beyond its rather powerful proportions, I presume it is the five buttons that will stand out upon first interaction with the watch: the wide, easy to find and press-checkered surface pushers feel confidence-inspiring in that you immediately are confident that they won’t break if you use them under water, when they are muddy, or if they endure a few hard knocks.

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

The bulky bezel has a surprisingly soft, rubbery feel to it – it’s a tough old sod of a material, so don’t get fooled into thinking it will peel or dent easily. Strange as it may sound, to my eyes the exterior has a somewhat organic look to it, for its colors, touch, and looks. It’s like an unusually tough bug that lives in the undergrowth and does unthinkably nasty stuff to its peers or survives massive rocks falling on it. You and I may end up with a different analogy, but what I think we’ll agree on is that this watch has a personality to it.

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

Once again, the more complex GWG-1000 is shown – Casio remains far from amazing when it comes to making high-resolution, relevant images accessible.

The integration of the strap, the tactile feel of the thing, the kind of natural evolution-inspired protective bulges on the bezel and around the “crown,” the almost laughable thickness, the sturdy looks and touch, as well as the relative lightness of the thing do all add up for a long list of likable aesthetic elements.

With all this in mind, looking at the Casio G-Shock GG-1000-1A5 Mudmaster makes me think it will work brilliantly either as an actual tool for those rescue workers and others doing comparably tough physical work out in the wild… Or as a fun-looking, quirky cool watch that is, well, fun to work. I don’t see it however as something that will have your non-watch-savvy, non-rescue worker friends and gals impressed by it in the least. It’s just too big and brash for that – those fun elements will likely be only appreciated by watch and/or gadget enthusiasts. If you want to look cool and stay within Casio territory, I suggest you just get yourself a colorful 5600 series or some other quirky Casio.

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews


As I said, the thickness is beyond what anyone in their right mind would simply want to call “considerable.” Its 17.3 millimeters is somewhere beyond the implications of that word, a situation worsened by the protrusions on the bezel that have a tendency of getting caught on sleeves and other places. They are rugged alright, but make the GG-1000 even more unlikely to slide under or out from under a sleeve. When looking for stuff in bags or in cubby holes in your car or wherever, the watch will likely get caught on one of those edges. Needless to say, the watch takes it without a morsel of a grumble – it is just annoying.

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

Casio G-Shock GG-1000-1A5 Mudmaster Watch Review Stopwatch Wrist Time Reviews

If you know you are – or expect to be – fine with tolerating thick watches, the GG-1000 will reward you with excellent wearability in all other aspects. The integration of the straps combined with intelligently designed lugs and a flat caseback means the watch will sit nice and flat on your wrist and won’t wobble about. The double-pin buckle I presume helps, though, truth be told, I would suggest picking up a second loop for the strap if you have narrow wrists like I do and end up with a long overhang of the other end of the strap. The GG-1000-1A5 measures a whopping 56.2 by 55.3 by 17.3 millimeters, and yet is more comfortable to wear than many of the expensive Swiss watches that come with tragically stiff straps and poorly designed lugs. In other words, when you’re not wearing any sleeves and are not rooting through your bags or other confined spaces, the Casio G-Shock GG-1000-1A5 Mudmaster feels super light and comfortable on the wrist. Few watches sit this settled and flat on the wrist, which is the exact of opposite of what you’d expect from a watch like this.



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  • Good Gene 42K18

    Two g-shocks in a row! I Am loving abtw so much right now! Double-noice, bredan ftw

  • IG

    Casio should create a G-Shock Sludgemaster collection for manual scavengers.

  • Yan Fin

    No solar for such a device means no-go. All the features would be very impressive – in 1980s.

  • Jon Snow

    Can you stop using child labour? It’s against UN laws. By this, I mean the infant who you use as your wrist model. Put the watch on a grown man, please.

    • David Bredan

      We tried doing that but then we got inundated with fan mail from you and your friends.

      • Jon Snow

        Was that a homophobic response, Bredan? My, my, the pressure is showing.

        • David Bredan

          You have enjoyed enough of my attention, Snow.

          • Jon Snow

            You’re not my type, cupcake.

    • Tempvs Mortvvs

      That wrist does look puny and highly contrasting with the watch. But if he likes it, he should wear it nonetheless. ?

  • Raymond Wilkie

    I don’t believe it.

  • Nice review David.

    “I do miss Multi Band 6 and Tough Solar.” That’s why I went with the GWG-1000. Although it is larger and has some functionality I never use.

    I just wish I could get a khaki strap for it………..

    • David Bredan

      Haha, that’s a good one! This already looks ridiculous on me but is actually comfortable – the GWG would definitely wobble about. I wonder if the GG’s strap would fit – I saw replacement straps on ebay 😉

      • From what I’ve been able to learn; no, they will not. Casio makes a tan camo strap for the GWG, but I simply do not like the way they executed it. Bad pattern.

  • Omegaboy

    I’ll bet an Xacto knife could take care of those pesky protrusions.

    • David Bredan

      No doubt!

  • SuperStrapper

    Yesterday’s rangeman is just a better “G”. There just something not right about ani-digi Gs. Theyre just better watches when all digital.

    • ProJ

      Legibility (of time reading) is better with ani-digi.

      • SuperStrapper

        Not that reading hands is difficult, but how is it easier than just seeing numbers that say 10:10?

        • ProJ

          Sorry, maybe my comment wasn’t very clear. I meant visibility of hands versus digital screen, specially in low light settings. I have a ProTrek PRW-3100Y-1B and I find reading time in low light is difficult unless of course I use the background light.

  • Ranchracer

    Guess it’s ugly G-Shock weekend.

  • I like the tone of the review, lighthearted and quick… That is until I read “y’all”. What is this, TheCHIVE?


    • David Bredan

      Thanks for the feedback… Although I don’t know what the chive is, I’ll make sure y’ll never have to suffer that again. Oh, there it is again. Darn it! …Share buttons are among the countless things we’ll improve soon! SIHH in the day, website calls and work in the night!

    • #The Deplorable Boogur T. Wang

      Y’all need to calm down.

    • Earl Long

      What’s wrong with y’all?

      • I don’t know; nothing wrong with me!

  • No solar, no radio, completely illegible (not only the negative LCDs, but the dial is a mess). They 80s called and they want their watch back.

    Analog G-Shocks are an abomination to the eyes of god.

  • Mike Wilensky

    I bought the Casio 1000 G-Shock model at my local Macy’s store, but returned it the very next day . It is a beautiful big watch, but far too complicated for everyday use, in my opinion. Instead, I opted for the less expensive G-Shock Mudmaster/twin sensor model at about half the price. It is far easier to work with on a daily basis , is very good looking, and only one mm smaller in diameter, as I love big watches.

    • David Bredan

      Rather confusingly, they’re both 1000s…. So I presume you purchased the GWG and ended up with this, the GG. It’s smaller and more competitively priced for sure.

      • Jamie McKay

        I don’t know if you did it deliberately in the article that those technical pics of the Alpha-Gel, the button, the O-ring all are of the GWG not the GG that’s in the review. That can be misleading to many, since I’m not sure if the GG has the Alpha-Gel and the double O-ring like the more expensive GWG.

      • Mike Wilensky

        Yes, David, you are right. I got the smaller version, but so much easier to use and see the fine details. Sometimes, Casio and other brands pack so much info. into a watch that one needs to carry the manual around with them just to remember how everything works! I once had a Suunto watch that was the very much same way. Thanks for your reply!

  • Mike Wilensky

    …I only wish it was solar and R/C too, as is its bigger brother; however, I still love the smaller Mudmaster, especially its basket weave style resin strap. It is so cool looking!

  • Playboy Johnny

    Wow, a couple of new G-Schlocks………. has it been a week already?

  • Mischa

    Gs are always cool. This fella is no exception. But honestly, I would have thought that by now all Gs came with default solar and radio.
    What a great review, David!

  • Swipster

    What an ugly looking thing.

  • Ildefonso García

    I have several G-shocks: Rangeman (my favorite), Protek, and two others (I do not know by heart the references numbers). The four of them have one thing in common, they are solar powered. I love the Casio G-Shock GG-1000-1A5 Mudmaster but I never have pulled the trigger because I think the whole ritual to go to your AD to have the battery change is, as your Presidente would say, SAD!

  • Tea Hound

    Needz moar buttinzes

  • HectorAsuipe

    You gotta have solar power! Negative display is a big negative. But count me in as a G-Shock fanboy forever.

  • David Rolls

    Nice watch for sure. Being a pure tool watch it’s not designed to be beautiful, worn with a suit, under a cuff, or on formal occasions so comments posted by the WIS about it being ugly, too big etc. are completely irrelevant.

    I agree the digi G-Shocks are easier to use, analogue G’s are just a pain to set up and remember how to use.

    This GG-1000-1A5 is nice with two LCD displays, but the lack of tough solar is a deal breaker for me. So when I’m down the shooting range or out in the field I’ll stick with my GWG-1000DC-1AF Mudmaster, which has tough solar (and also has the desert camo resin band 🙂 and when I want to go digi only I’ll pull out my Rangeman GW-9400DCJ-1 instead (again tough solar and desert camo resin band). I’d love to get a Mudman GW-9300DC-JF (tough solar, negative digi display, desert camo band), but they’re getting hard to find 🙁

  • Pete L

    Great review David and I am in complete agreement. The white on black display is next to useless most of the time and the light is in the wrong place. Would benefit from the multi band and solar too but I just fell in love with it and have no regrets! Just too cool on that khaki strap!

  • msbav8r

    I’m not paying that much money for a watch that is made by a company that won’t honor their warranty.
    Casio’s warranty has an exclusion for ‘circuit boards’ which makes it useless.
    They should stick to what they know- cheap, disposable watches.

  • Very good article!

  • Chris Brill

    I have an assortment of G-Shocks including a Protrek and I thoroughly abuse mine in many outdoor and indoor activities, from rock climbing, hiking, mountain biking, trail running, snowboarding, swimming, etc. I send them to an authorized service center for battery replacements (with the exception of the Tough Solar models) and pressure tests. Some are close to 10 years old. They’re virtually indestructible. Super dependable, reliable and built for my endeavors. After reading your excellent & thorough review covering many of the points that matter to me, I purchased the 1A5 model here to add to my collection.

  • SSgt. J D. Herrington

    Wearing one now. Adequate for the job.

  • SSgt. J D. Herrington

    Used Casio watches for years as a Marine Raider and Zodiac coxswain. Never once a malfunction. Other Marines report same. Good to go.

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