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G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black
G-Shock Mudmaster gg-b100-1a Black

G-Shock Mudmaster gg-b100-1a Black

$228.52

(3,349 reviews)

The Casio G Steel Solar Bluetooth is designed for athletes and outdoor enthusiasts who need a watch that can keep up. Crafted with bluetooth capabilities, so that you can connect your smartphone and keep time from anywhere in the world. Tough Solar technology also means that this timepiece has a stable supply of battery. This G-Steel watch is highly durable, especially with 200m water resistance. Not only is this timepiece one of the most dependable on the market, its pure steel look is impressive, giving it a fashionable edge.

The Casio G Steel Solar Bluetooth is designed for athletes and outdoor enthusiasts who need a watch that can keep up. Crafted with bluetooth capabilities, so that you can connect your smartphone and keep time from anywhere in the world. Tough Solar technology also means that this timepiece has a stable supply of battery. This G-Steel watch is highly durable, especially with 200m water resistance. Not only is this timepiece one of the most dependable on the market, its pure steel look is impressive, giving it a fashionable edge.

G-Shock Mudmaster gg-b100-1a Black

(3,349 reviews)

The Casio G Steel Solar Bluetooth is designed for athletes and outdoor enthusiasts who need a watch that can keep up. Crafted with bluetooth capabilities, so that you can connect your smartphone and keep time from anywhere in the world. Tough Solar technology also means that this timepiece has a stable supply of battery. This G-Steel watch is highly durable, especially with 200m water resistance. Not only is this timepiece one of the most dependable on the market, its pure steel look is impressive, giving it a fashionable edge.

The Casio G Steel Solar Bluetooth is designed for athletes and outdoor enthusiasts who need a watch that can keep up. Crafted with bluetooth capabilities, so that you can connect your smartphone and keep time from anywhere in the world. Tough Solar technology also means that this timepiece has a stable supply of battery. This G-Steel watch is highly durable, especially with 200m water resistance. Not only is this timepiece one of the most dependable on the market, its pure steel look is impressive, giving it a fashionable edge.

$228.52 - $877.29

in 40 offers

The lowest price for G-Shock Mudmaster gg-b100-1a Black right now is $228.52 at eBay.com.au, compared across 29 retailers.

The all-time low was $119.99 on 26 May 2026 — today's price is 90% above the lowest ever. It has been notably cheaper before — worth setting a price alert.

Prices last updated 20 Aug 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 20/08/2026 13:36:00

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
eBay.com.au

$228.52

Casio G-shock Gma-s2200-1a Gma Black Analog Digital Ladies Casual

Delivery $153.17

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$231.21

Casio G-shock Gma-s2200-1a Gma Black Analog Digital Ladies Casual

Delivery $56.50

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$280.51

Casio G-shock Gg-b100-1a Mudmaster Carbon Core Guard Quad Sensor Watch

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

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Casio G-shock Gg-b100-1a Mudmaster Quad Sensor Bluetooth Watch 200m

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Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

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Casio G-shock Men's Watch - Ggb100-1a Bluetooth Mudmaster. Black

Delivery $15

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$300.00

Casio G-Shock Men's Watch - GGB100-1A

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

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Casio G-shock Steel Gg-b100-1ajf Mens From Japan

Delivery $30.94

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$434.99

Casio G-shock Mudmaster Gg-b100-1a Black Quad Sensor Bluetooth Mens

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$569.36

Casio G-shock Mudmaster Carbon Core Bluetooth Men's Watch Gg-b100-1a

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$642.64

Casio G-shock Gg-b100-1a Rugged Mudmaster Quartz Watch From Japan

Delivery $53.90

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

27 September 2022Dave D.

originally posted on watchshop.com

Really, really nice watch. Functions for days and very stylish. It's chunky so might look silly on a slimmer wrist but the new design and carbon core means even though it's a big piece it does wrap nicely around the wrist. Love the slightly domed glass on the face and the light is so bright you could use it to find your way in a dark room. Very nice layout which means everything so clear and easy to read. Fan of a sporty watch, G-Shock Mudmaster then I will definitely recommend this piece to add to your collection.

A great experience all the way!!
20 July 2021Rick

originally posted on dillards.com

One of the many things I love about this watch is it's ability to display the temperature very accurate. I've checked it many times with my phone's weather app and it has been consistently on track. Last summer I got a little too hot while mowing ( I own a landscaping company) and had to recuperate for a couple days before getting back to work. With this watch, I can set it to the "Temp" position and keep a close eye on it during the hottest time of the day. It helps me to remember to take breaks often and rehydrate. It's also tough. The carbon fiber bezel takes a beating and keeps on ticking (sorry Timex).Also, with Dillard's being an authorized dealer, I didn't have to worry about a fake or gray market item. All the paperwork, warranty information is in the box. ... MoreOne of the many things I love about this watch is it's ability to display the temperature very accurate. I've checked it many times with my phone's weather app and it has been consistently on track. Last summer I got a little too hot while mowing ( I own a landscaping company) and had to recuperate for a couple days before getting back to work. With this watch, I can set it to the "Temp" position and keep a close eye on it during the hottest time of the day. It helps me to remember to take breaks often and rehydrate. It's also tough. The carbon fiber bezel takes a beating and keeps on ticking (sorry Timex).Also, with Dillard's being an authorized dealer, I didn't have to worry about a fake or gray market item. All the paperwork, warranty information is in the box. Shipping was quick and I was kept in the know concerning delivery. I appreciate Dillard's due diligence.I'm very satisfied with this purchase and would not hesitate to purchase again.

Awesome look
15 August 2021Disappointed in Jax

originally posted on REI

Purchased this watch for the look. Looks great with great features. I was like a kid at Christmas waiting for it to arrive. The watch after setting up would only stay connected to Bluetooth for three minutes then disconnect . The only way to get it to reconnect was to unpair it, delete the app, download the app again, re- pair the watch and completely set the settings up all over again. Did this seven times. Even tried it on my wifes iPhone 12 same issue. Spoke with Casio customer service tried a full reset to no avail. Determined defective. For $380 you would think you could get a watch that works, very frustrating. REI was great and took the return to be returned to Casio. Love REI !!! I’ve read a similar review on another model which adds the heart rate monitor ... MorePurchased this watch for the look. Looks great with great features. I was like a kid at Christmas waiting for it to arrive. The watch after setting up would only stay connected to Bluetooth for three minutes then disconnect . The only way to get it to reconnect was to unpair it, delete the app, download the app again, re- pair the watch and completely set the settings up all over again. Did this seven times. Even tried it on my wifes iPhone 12 same issue. Spoke with Casio customer service tried a full reset to no avail. Determined defective. For $380 you would think you could get a watch that works, very frustrating. REI was great and took the return to be returned to Casio. Love REI !!! I’ve read a similar review on another model which adds the heart rate monitor so I’m hesitant to try another. G Shock.

Specification

Batteries1 Lithium Ion batteries required. (included)
Product dimensions21.5 x 1.9 x 5.1 cm; 92 Grams
Country of originJapan
Display typeAnalog-Digital
Band material typeResin

Price comparison

Updated 5 days ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
eBay.com.au

$228.52

Casio G-shock Gma-s2200-1a Gma Black Analog Digital Ladies Casual

Delivery $153.17

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$231.21

Casio G-shock Gma-s2200-1a Gma Black Analog Digital Ladies Casual

Delivery $56.50

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$280.51

Casio G-shock Gg-b100-1a Mudmaster Carbon Core Guard Quad Sensor Watch

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$299.00

Casio G-shock Gg-b100-1a Mudmaster Quad Sensor Bluetooth Watch 200m

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

eBay.com.au

$300.00

Casio G-shock Men's Watch - Ggb100-1a Bluetooth Mudmaster. Black

Delivery $15

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

27 September 2022

Really, really nice watch. Functions for days and very stylish. It's chunky so might look silly on a slimmer wrist but the new design and carbon core means even though it's a big piece it does wrap nicely around the wrist. Love the slightly domed glass on the face and the light is so bright you could use it to find your way in a dark room. Very nice layout which means everything so clear and easy to read. Fan of a sporty watch, G-Shock Mudmaster then I will definitely recommend this piece to add to your collection.

Dave D. originally posted on watchshop.com
A great experience all the way!!
20 July 2021

One of the many things I love about this watch is it's ability to display the temperature very accurate. I've checked it many times with my phone's weather app and it has been consistently on track. Last summer I got a little too hot while mowing ( I own a landscaping company) and had to recuperate for a couple days before getting back to work. With this watch, I can set it to the "Temp" position and keep a close eye on it during the hottest time of the day. It helps me to remember to take breaks often and rehydrate. It's also tough. The carbon fiber bezel takes a beating and keeps on ticking (sorry Timex).Also, with Dillard's being an authorized dealer, I didn't have to worry about a fake or gray market item. All the paperwork, warranty information is in the box. ... MoreOne of the many things I love about this watch is it's ability to display the temperature very accurate. I've checked it many times with my phone's weather app and it has been consistently on track. Last summer I got a little too hot while mowing ( I own a landscaping company) and had to recuperate for a couple days before getting back to work. With this watch, I can set it to the "Temp" position and keep a close eye on it during the hottest time of the day. It helps me to remember to take breaks often and rehydrate. It's also tough. The carbon fiber bezel takes a beating and keeps on ticking (sorry Timex).Also, with Dillard's being an authorized dealer, I didn't have to worry about a fake or gray market item. All the paperwork, warranty information is in the box. Shipping was quick and I was kept in the know concerning delivery. I appreciate Dillard's due diligence.I'm very satisfied with this purchase and would not hesitate to purchase again.

Rick originally posted on dillards.com
Awesome look
15 August 2021

Purchased this watch for the look. Looks great with great features. I was like a kid at Christmas waiting for it to arrive. The watch after setting up would only stay connected to Bluetooth for three minutes then disconnect . The only way to get it to reconnect was to unpair it, delete the app, download the app again, re- pair the watch and completely set the settings up all over again. Did this seven times. Even tried it on my wifes iPhone 12 same issue. Spoke with Casio customer service tried a full reset to no avail. Determined defective. For $380 you would think you could get a watch that works, very frustrating. REI was great and took the return to be returned to Casio. Love REI !!! I’ve read a similar review on another model which adds the heart rate monitor ... MorePurchased this watch for the look. Looks great with great features. I was like a kid at Christmas waiting for it to arrive. The watch after setting up would only stay connected to Bluetooth for three minutes then disconnect . The only way to get it to reconnect was to unpair it, delete the app, download the app again, re- pair the watch and completely set the settings up all over again. Did this seven times. Even tried it on my wifes iPhone 12 same issue. Spoke with Casio customer service tried a full reset to no avail. Determined defective. For $380 you would think you could get a watch that works, very frustrating. REI was great and took the return to be returned to Casio. Love REI !!! I’ve read a similar review on another model which adds the heart rate monitor so I’m hesitant to try another. G Shock.

Disappointed in Jax originally posted on REI
Great everyday watch.
29 January 2023

This is a great watch! For its' size---it dominates my wrist---it is very light weight. I am still learning the various features but , so far, my favorite feature is the large white hands on the black background. A quick glance (as opposed to reading) is all it takes to know the time. I am sure it will become more impressive over time but so far it is very much liked. I highly recommend this watch.

schr-95643 originally posted on ebay.com
Junk I wouldn't buy again
28 September 2022

I bought this product so I had a watch for everyday use, had the watch a week and it self adjusted the time to an incorrect time zone and wouldn't allow me to adjust it back to my current time zone. So I disconnected the watch from my phone, then reconnected it. It still never adjusted the watch to the correct time zone. So I deleted the watch completely deleted the watch from the app. Then I went through the setup for the watch again and still no changes to the time issue. So I bought a different watch to replace the now $400 paper weight I have. I would NOT buy this watch again.

Disgruntled customer 65 originally posted on kay.com
Men's Casio G-Shock - Mudmaster Orange Strap Watch Gifts For Him
29 December 2022

What a brilliant watch, functions are brilliant, the watch looks great, definitely a great comfortable watch to wear. Why only 3 stars, the strap. I decided to buy the orange strap watch as it stood out but unfortunately this is the issue. In a short space of time the strap has become discoloured, dull and looks dirty. I cleaned the strap after wearing the watch every time but no joy. I contacted Casio who told me this is what happens. So overall an outstanding watch but just dont buy the orange strap version.

Mike originally posted on fhinds.co.uk
Men's Casio G-Shock - Mudmaster Watch Gifts For Him
5 June 2022

A very lightweight and wearable G-Shock. The usual host of functions for the brand, plus Altimeter, Barometer, Compass and step counter. The watch is navigation focused with location indicator enabling easy pinpointing to your campsite, car park etc. The accuracy of this function is very impressive using Bluetooth link to your smartphone to log the location point. The watch can also be set up using the G-Shock app and the modes can be customised. Build quality is very good, carbon fibre bezel looks attractive too. To sum up, a wearable daily beater with a host of functions that looks at home in the office as does in the great outdoors.

Remus R originally posted on fhinds.co.uk
Outstanding Mudmaster!
17 August 2021

This is an outstanding Mudmaster! Especially as the entire unit is sealed w/o any crown to unscrew for setting adjustments. The dial's light is incredibly bright! The Step Counter is a nice addition. Plus, the included Sunrise-Sunset, Step Counter, Route Tracking Mode, and more, are nice to have (if you use them); although I am more accustomed to use my pre-existing Android smartphone's apps for these metrics. Features absent from this Mudmaster -- as compared to Casio's top of the line far more costly GWG-1000 are Tough Solar, Anti-Reflective Sapphire Crystal, and at a glance Mode Subdial.

mu_3726 originally posted on ebay.com
Review Title
19 December 2019

Well, what to say about this watch... other than it is pretty awesome!I have a few G-Shock watches now, ranging from the tiny Pikachu Baby-G to the beast that is the GWG-1000 MudMaster, the GG-B100 sits on my wrist more than the others now and is very worthy of the MudMaster name. It shares a lot of the features with it's big brother but has plenty more on top, in some cases it even betters its brother! For example, the barometer function, this watch can show you over 2 days worth of data (the GWG only shows 1 day), much better to see changes in the weather. I also find the thermometer to be better as you don't have direct contact with a metal case back as it has a resin cover. Then of course there is the step tracking function that can record your daily steps ... MoreWell, what to say about this watch... other than it is pretty awesome!I have a few G-Shock watches now, ranging from the tiny Pikachu Baby-G to the beast that is the GWG-1000 MudMaster, the GG-B100 sits on my wrist more than the others now and is very worthy of the MudMaster name. It shares a lot of the features with it's big brother but has plenty more on top, in some cases it even betters its brother! For example, the barometer function, this watch can show you over 2 days worth of data (the GWG only shows 1 day), much better to see changes in the weather. I also find the thermometer to be better as you don't have direct contact with a metal case back as it has a resin cover. Then of course there is the step tracking function that can record your daily steps when using the G-Shock app on your phone. And when you do pair up with your phone a whole new bag of tricks is opened up for you.. from regular timekeeping updates to being able to record your location and then finding your way back using the watch, showing which direction and how far away, without having to take your phone out of your pocket/rucksack. Not to mention how much easier the app makes setting nearly all of the watch functions. I suppose I had better talk about how it looks.. I chose the orange version (1A9ER iirc), it looks stunning, then again all 3 versions do. It fits in nicely with the MudMaster range but slightly smaller than it's big brothers and the carbon fibre bezel looks very swish, the glass is domed which helps with any sunlight reflecting. Lume is pretty good, but should you need more light, the led light is amazing, it is literally the equivalent of shining a torch on the watch face! Fit wise, I have 8 inch wrists and the strap is plenty long, long enough that the tail end can still be held neatly down by the keeper. I barely notice the weight on my wrist, it is very comfortable to wear.tl;dr .... buy it now, it is awesome... oh and delivery was top notch, next working day and VERY well packed! Thanks!

originally posted on firstclasswatches.co.uk
The Swiss Army Knife of Watches
7 June 2021

I've had the GG-B100 for two weeks now and I'm more impressed that I ever could have expected. I've worn it to work, the gym and on days out and it has withstood all kinds of impact. The build is robust, the light is extremely powerful for such a small watch and the glow in the dark feature has proven to be useful on several different occasions. Generally, all the functions seem to be quite accurate, including the step counter. The display is visible without fail during the day, but can get a bit difficult to see in darker environments, which the light more than makes up for. My only issue is that it can be a bit uncomfortable to wear for extended periods of time, but that's a small price to pay for a nigh-indestructible watch band. Overall fantastic quality, the ... MoreI've had the GG-B100 for two weeks now and I'm more impressed that I ever could have expected. I've worn it to work, the gym and on days out and it has withstood all kinds of impact. The build is robust, the light is extremely powerful for such a small watch and the glow in the dark feature has proven to be useful on several different occasions. Generally, all the functions seem to be quite accurate, including the step counter. The display is visible without fail during the day, but can get a bit difficult to see in darker environments, which the light more than makes up for. My only issue is that it can be a bit uncomfortable to wear for extended periods of time, but that's a small price to pay for a nigh-indestructible watch band. Overall fantastic quality, the value for money is unparalleled, especially for a watch that will likely last longer than you will.

Eidi H. originally posted on g-shock.co.uk

Specification

Batteries1 Lithium Ion batteries required. (included)
Product dimensions21.5 x 1.9 x 5.1 cm; 92 Grams
Country of originJapan
Display typeAnalog-Digital
Band material typeResin

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