A G-SHOCK like work of art, featuring sword designs throughout. A hands-on review of the "MRG-B2000KT Kuroganetsuba"

G-SHOCK's "MR-G" series has many fans worldwide as a high-quality, tough watch for adults. This time, we'll be reviewing the new model, the "MRG-B2000KT Kurogane Tsuba (Iron Guard)." This is a noteworthy model that follows the "MRG-B2000BK Kurogane Iro (Iron Color)," which was released in May 2025 and was inspired by the color of iron used in ancient military equipment. Boasting the pinnacle of the "Iron Series" with its meticulous craftsmanship and perfection, this limited edition model will be limited to only 800 pieces worldwide.

Will G-SHOCK's "MR-G" "Kuroganetsu Tsuba" become a modern-day talisman?

FEATURES

Pay attention to the engraved bezel, crafted by a "contemporary master craftsman"

The "MT-G" series fuses traditional Japanese craftsmanship with cutting-edge technology, resulting in some of the most original and high-quality G-SHOCK models. The "MRG-B2000BK Kurogane-iro" model, released in May 2025, features a titanium exterior reminiscent of the deep blue-green color that appears when the iron used in traditional Japanese armor is heated. The new "MRG-B2000KT Kurogane-Tsuba" model, released in November, further explores the concept of military equipment, incorporating Japanese design elements and the unique ornamentation found on Japanese swords. While this unique watch boasts many appealing features, its most notable feature is the engraved bezel crafted by traditional artisans.

　This is a limited production model of 800 pieces, and each and every bezel is hand-engraved. And yet, of course, it also fully incorporates the advanced convenience of the MR-G, such as shock resistance, solar charging, and Bluetooth connectivity with smartphones. In other words, it is a watch that combines the quality of a work of art with the highest level of functionality. This is truly intriguing.

　Let's start by looking at the exterior. The most eye-catching feature is the titanium decorative bezel. Elements of the phoenix, a type of auspicious bird, are engraved in two places, making it extremely striking and beautiful. What's more, it was created by metal ornament maker Kobayashi Masao, who has also received the Medal with Yellow Ribbon as a "Contemporary Master Craftsman." Upon closer inspection, the flow of the phoenix's feathers, among other things, is made possible by the use of an artisan technique called "shishi aibori," resulting in a finish that gives a realistic sense of three-dimensionality. The organic beauty of the design, which sets it apart from automated products, is truly worth seeing.

　The bezel is said to be decorated like the tsuba (guard) of a sword, and the case also imitates the unique aesthetic of swords. Inspired by the nie (boiling) patterns found on the blade of a sword, the case has been recrystallized using pure titanium and then brown AIP added to achieve a copper color reminiscent of the sword's koshirae (attachment) (Editor's note: koshirae is the term used to refer to the exterior of a Japanese sword).

　The reason why samurai of the time sought special decorations for their self-defense tools was because they were the anchor of their souls. So what possessions do modern-day samurai-like businessmen entrust their pride to? There are many, but there are surely many who view watches as special and cherish them as a "weapon" for punctuality.

　Furthermore, this model features four screws set with lab-grown emeralds on the bezel. Emeralds have been a symbol of wisdom since ancient times, and are said to have the power to discern the truth. For 21st century weapons, the owner will benefit more from the protection that shows them the right path than from a sharp blade.

A powerful presence, excellent usability and advanced features

　Next, we checked the fit and operability. The previous model, the "MRG-B2000BK Iron Color," came with a titanium bracelet and weighed 150g. This new model, the "MRG-B2000KT Iron Tsuba," comes with a rubber strap and weighs 138g. Considering the case size of 54.7mm long x 49.8mm wide x 16.9mm thick, it is quite heavy, but it doesn't feel too heavy when worn.

　The thick, firm Durasoft rubber strap provides stable support for the large, impressive case, and if it fits properly, it won't wobble even when you swing your wrist. The D-buckle, which is the same color as the case, is easy to fasten and remove. The buttons open and close easily without any force. The titanium buckle has a satin-like finish with a subdued sheen. It does not have the ni-e (boiled) finish used on the case, giving it a modern and understated look.

　The crown is large and has knurling on the side similar to a Clous de Paris pattern. Compared to the typical horizontal knurling, it seems less slippery when operating the watch. There is also a crown guard, but it is not too large and is chamfered so it does not cover the crown and does not interfere with turning the watch.

　The crown is screw-down and can be pulled out in two stages for each operation. When pulled out, there is little play in the winding stem and no extra force is required. It is light and has a click sound that confirms it has been pulled out, making adjustments easy without any preparation.

　Each push button is surrounded by a circular guard, rather than being a separate button, so it may not be possible to press it fully with the pad of your finger. If you want to operate it as intended, it's better to press it with the tip of your finger. In other words, if you understand that you can use it hard and safely thanks to this guard, you should avoid pressing it too deeply with your fingernails.

　The dual coil motor movement of the hands is what makes it a Casio product. The high-speed movement of the hour, minute, and world time hands allows for breathtakingly quick adjustments. It goes without saying that a mechanical watch cannot match this, and it's amazing that even a battery-powered watch can be this fast.

　One of the benefits of battery-powered watches is the super illuminator, which boasts high brightness. The dial lights up with a single push of a button, even in complete darkness, so you can check the time with confidence. I personally like the fact that it doesn't just light up while you press the button, but instead lights up for a set period of time with a single push and then gradually turns off.

Dial design that balances visibility and aesthetics

　Next, let's move on to my impressions after wearing it. I usually wear vintage watches with a case diameter of around 35mm. Therefore, this watch, with a diameter of just under 5cm, feels quite large on my wrist. However, the flexible durasoft rubber strap fits well, and even when walking and swinging my arms, I sometimes forget I'm wearing it. However, the buckle is about 9mm thick, and when working on a PC while wearing it, it sometimes touches the desk, which I found a little uncomfortable.

　The function button for selecting each function is located at the 8 o'clock position, and a single press puts the watch into stopwatch mode. An electronic sound notifies you of the mode change, but no sound is emitted when the stopwatch starts. Because the hands move in steps, it was sometimes difficult to tell whether the stopwatch had started or not.

　Also, to return from stopwatch mode to regular clock mode, you press the function button three times, and only when returning to clock mode does the tone of the electronic sound become a little higher. This sound change is likely to allow for no-look operation, but this high tone easily blends in with everyday sounds, and there were a few times when I couldn't hear it. However, this may be due to my "aging ears."

　As for visibility, it is impeccable. The dial, finished with an arrow feather pattern, allows you to read the time without too much glare, even under strong sunlight. The three-dimensional indexes have a curved top, and the way they glide and shine beautifully in the light is beautiful. In addition, the outer edge of the dial is intentionally designed to be reflective. When exposed to light, it sparkles like a mirror, adding a touch of glamour. And as mentioned above, visibility in dark places is also good.

Adult coordination doesn't just focus on rugged elements

　Now, the "MRG-B2000KT Kuroganetsuba" is a limited edition piece packed with highlights, including an engraved bezel handcrafted by a modern master craftsman, a nie (nie) case, an arrow feather dial and emerald points. This time, I wanted to wear it fashionably, so I tried putting together the following outfits.

　Since this work is inspired by military equipment, the military style of clothing matches it well. However, military jackets such as the M65, which is an actual US military jacket, are too rugged. A style that incorporates rugged elements into street wear is more realistic for MR-G. Therefore, the main piece chosen is a down vest in military green with military uniform details.

　A beige shawl collar sweater in a nie case adds a touch of early winter. Pants can be chosen depending on the occasion, whether it's blue jeans, gray slacks, or chinos. The key is your feet. If you're heading out into the city, you should choose dress shoes, but since I'm expanding my impressions to a suburban park, I chose boots. These American Browning boots are a pair used for hunting, so they go well with the "iron guard."

　

　

　In other words, a pair of shoes this hard would be a good balance to go with a distinctive, decorative watch. That's right, if you're coordinating an outfit centered around the MRG-B2000KT Tetsu-Tsuba, an active, casual style for off-duty is best.

　Finally, I looked over the "MRG-B2000KT Iron Tsuba" one more time, and noticed dust and dirt everywhere on the body after a period of wear. It seems that models with various decorations and uneven surfaces are more likely to pick up such foreign matter. Dust that gets caught in the gaps between the uneven surfaces is difficult to remove with a cloth such as a glasses cleaner. This reminded me of a scene in a period drama where a lord draws his beloved sword in his room and pats it.

　After some research, I found out that it's called "dusting powder," and is one way of maintaining a sword, removing old oil that has accumulated there. It can't be used to clean a watch, but it would be good to have a "dusting powder" specifically for watches to remove dust and dirt. Of course, like a proper "dusting powder," it doesn't need to be filled with whetstone powder; as long as it has a brush function, that's sufficient. After wearing the "tetsu-tsuba" for a few days, I'll spend some time alone in my study patting the powder on the sword. It will help maintain its beauty, and it'll also give me a chance to appreciate the intricate finish once again. I think it will deepen the joy of owning a sword, what do you think?