G-SHOCK "Gravitymaster" Ref. GWR-B3000 Wear Review! Optimized toughness structure combined with a new movement.

In 2026, G-SHOCK introduced the new "GWR-B3000" to its Gravitymaster pilot watch series. Designed for use in the harsh conditions of a cockpit, this ambitious model incorporates new technologies in its exterior and movement to ensure visibility, toughness, and superior timekeeping accuracy. This article provides a wear review of the Ref. GWR-B3000A-2AJF, a model belonging to this series, ahead of its release.

"Aerial G-force" inspired by high-performance jet aircraft challenging Mach speed.

　The G-SHOCK "Gravitymaster" is a pilot's watch belonging to the "MASTER OF G" professional line, which specializes in various fields such as land, sea, and air. Designed for use in the cockpit where split-second decisions are required, all models in the lineup feature excellent visibility and operability, as well as a shock-resistant structure called "Triple G Resist" that can withstand loads such as impact force, centrifugal force, and vibration.

　The "GWR-B3000" series, which we will be reviewing here, was released in 2026 as part of this collection. Its development concept is "Supersonic." The design is inspired by the overwhelming sense of speed displayed by supersonic jet aircraft, and it boasts outstanding functionality to match.

　Another noteworthy aspect of this series is the incorporation of numerous new technologies. In addition to a shock-resistant structure utilizing topology (simultaneous optimization analysis), it features a highly legible dial and a new movement with a mechanism to maintain accuracy, representing a complete overhaul both internally and externally compared to previous models. Furthermore, it utilizes MIM (metal injection molding), which enables complex metal shaping, resulting in a tough watch that brings together Casio's advanced technologies.

　The watch comes in three variations, each based on either dark blue or black. This article focuses on the dark blue model, "Ref. GWR-B3000A-2AJF." Below, we'll examine its functionality, design, and the new approach taken to ensure shock resistance and visibility.

A newly developed dial that maximizes visibility, the essential feature of a pilot's watch.

　First, let's talk about legibility, which is essential for pilot watches. Pilot watches are a popular genre that is supported by a wide range of age groups, but in reality, there are no globally standardized performance or design criteria. In other words, the design is left to the discretion of each brand, but one thing that is common to almost all pilot watches is that they have excellent legibility.

　To ensure legibility, this model features a newly developed dial based on light diffusion technology, in addition to three-dimensional indices and large hands. Its surface is not only covered with countless specially shaped textures, but also has a matte finish, resulting in a structure that reflects almost no light. Furthermore, a scratch-resistant, highly transparent sapphire crystal with an anti-reflective coating ensures a clear view. Combined with the contrast in textures, this allows for reliable time reading even in bright sunlight.

　Furthermore, it's worth noting that the details on the dial are adorned with separate, three-dimensional parts. Not only the various sub-dials, but also the interfaces used for radio wave reception and alarm functions stand out clearly. Although this model is priced at over 10 yen, placing it in the higher price range for a G-SHOCK, the level of craftsmanship is undeniably commensurate with its price.

Optimized "dual hollow structure" and three-dimensional exterior finish

　Now, my personal highlight of this model is the newly developed shock-resistant structure, the "Dual Hollow Structure." This is the latest exterior design, reconstructed through topology optimization based on the Triple G Resist, which is synonymous with the Gravitymaster. By creating a "floating" structure that supports the core module at only four points, it is an extremely logical design that does not directly transmit external shocks.

　In this context, topology optimization refers to a cutting-edge engineering technique (computer analysis) that optimizes part shapes by comprehensively simulating three stresses: impact force, centrifugal force, and vibration. This technology is used in this work to construct a new structure composed of multiple parts, achieving both excellent durability and three-dimensional aesthetic beauty.

　And supporting this complex design is the MIM molding used for the metal parts of the outer case. By mixing metal powder and resin, filling a mold, and then removing only the resin after molding, it is possible to achieve precise molding that allows for structural optimization, as well as high density and high strength befitting a tough watch.

　The surface finish is primarily satin, with polished areas subtly incorporated on the edges and sides of the screws, resulting in a finish that emphasizes three-dimensionality. The bezel is colored in a dark blue tone that matches the dial, and features a circular finish. When viewed from the front, it gives a stoic impression with no gloss, but when viewed from the side, the polished areas create a contrast in texture, highlighting the three-dimensional design of this piece.

Despite its large case size, it offers a lightweight feel and excellent operability.

　My wrist circumference is 16.5cm, and the watch's substantial case, measuring 56.7mm vertically and 47.3mm horizontally, is somewhat oversized for me. However, for a tool watch aimed at professionals, this volume also adds to its appeal and charm.

　On the other hand, the weight has been reduced to just 102g, and the thick, flexible soft urethane strap fits snugly around the wrist, making it feel much lighter than its heavy appearance might suggest. The topology optimization likely minimizes structural waste. I didn't feel much stress even after wearing it for extended periods.

　Another thing that surprised me when I actually used it was how easy the resin pushers were to handle. In typical G-SHOCK watches, the pushers are protected by a raised guard around them, but in this model, the pushers themselves are embedded in the case, so that shocks are not directly transmitted to them. In fact, when viewed from the front, the tops of the pushers hardly protrude at all and blend in perfectly with the shape of the case.

　Nevertheless, the pusher in this game is quite large, and the opening for gripping it is generously sized, making it very easy to use. This is a point I would definitely recommend many people pick up and try out.

"TOUGH MVT.2" that thoroughly maintains precision, and a suite of professional functions.

　While we've mainly looked at the exterior and dial so far, one of the highlights of this model is the inclusion of the new "TOUGH MVT.2" movement. This movement incorporates a newly introduced "shock-detection automatic hand position correction function" and "magnetic field detection function," ensuring thorough accuracy even in harsh environments.

　For example, if the watch is subjected to a strong impact, it is immediately detected, and the position of the hour, minute, and second hands is automatically corrected to ensure reliability. On the other hand, when the built-in magnetic field sensor detects an external magnetic field, the movement of the hands is temporarily paused to prevent deviation from the reference position. When the magnetic field disappears, the hands return to the correct position and resume movement, demonstrating extremely sophisticated control.

　Of course, it is not recommended to actively expose the device to strong magnetic fields or shocks, so we were unable to test its true capabilities in this impression. However, the combination of its ability to detect and correct external factors such as shocks and magnetism, and its new shock-resistant structure, will be a very reassuring feature for pilots.

　Furthermore, this model boasts a full range of practical features for pilots. By connecting to the dedicated "CASIO WATCHES" app via Bluetooth® communication, it can obtain accurate time information and record flight logs. In addition, it is equipped with a high-brightness LED light (Super Illuminator) that brightly illuminates dark places, and a direct UTC (Coordinated Universal Time) call function.

Summary

　This timepiece combines an advanced dual hollow structure achieved through topology optimization, a three-dimensional aesthetic reminiscent of aircraft instruments, and a newly developed movement that ensures ultimate reliability. Its uncompromising professional specifications, along with its stoic and large appearance, made it incredibly appealing to me, someone whose heart is strongly drawn to gadgets and tools.

　Actually, this was the first time I'd had such a close look at a Gravitymaster, and my impression of the actual watch gave me a real sense of the difference in design philosophy between a regular G-SHOCK and the MASTER OF G. It is a bit pricey, but I highly recommend getting one for yourself and stepping into the deeper world of tough G-SHOCK watches.