Get to know the "Full Metal" G-SHOCK! A watch that embodies Casio's challenging spirit and technology

The "Full Metal" G-SHOCK collection literally uses "metal" for the exterior, which previously was made of resin. To ensure shock resistance while also making the exterior fully metal, the design of the case and shock-absorbing parts had to be revised. In this article, we will summarize the background to the creation of the "Full Metal" G-SHOCK, the technology used, and introduce some representative models.

What is a "Full Metal" G-SHOCK?

A "full metal" G-SHOCK is a G-SHOCK that literally uses metal for its exterior. The original G-SHOCK, the DW-5000C, released in 1983 and often referred to as the "origin," was a groundbreaking watch characterized by its ability to withstand impacts. This shock resistance was inspired by the bouncing of a rubber ball, featuring a hollow structure that supported the internal module with several small points, while the resin case played a key role, with the entire bezel and strap acting as shock absorbers. This characteristic may have given the impression that G-SHOCK is synonymous with casual, resin-based models. However, in 1996, Casio Computer Co., Ltd. introduced the first full-metal G-SHOCK with the MRG-100. Following the success of the GMW-B5000 in 2018, metal has since become an essential material for G-SHOCK.

　So how did Casio achieve the shock resistance of a resin case with a full metal case? While maintaining the shock-absorbing design of the "Origin," Casio Computer implemented a fine resin cushioning material between the bezel and case. This combines the hard texture of a full metal exterior with the shock resistance of G-SHOCK.

　Furthermore, with the shift to metal exteriors, surface finishes have become more diverse. By dividing the exterior parts into parts and creating complex shapes, it is now possible to achieve exterior finishes not possible with conventional resin models, such as polished finishes, hairline finishes, recrystallization, and deep hardening processes.

　Currently, the main lineup includes the GMW-B5000 and the octagonal GMW-B2100. Equipped with Bluetooth, it can connect to smartphones and automatically adjust the time and set the world time on the smartphone, and G-SHOCK also supports phone search, making it a convenient default feature.

Introducing our recommendations from the "Full Metal" G-SHOCK!

　We will introduce some representative models from the current "full metal" G-SHOCK lineup. All of them have a full metal exterior and are shock-resistant based on the G-SHOCK design philosophy. The key point to consider when choosing is that the differences in exterior materials reflect the individuality of each model.

GMW-BZ5000GD-9JF

The GMW-BZ5000GD-9JF is a "full metal" G-SHOCK model from the GMW-B5000 series, released in 2025, and is a generative design model created through collaboration between humans and AI. Based on over 40 years of G-SHOCK shock-resistant structure data, it features a new full-metal structure, connecting the bezel and center case at the top and bottom, with a resin inner protector that absorbs shock through elastic deformation. This new structure allows for a completely new exterior look, including a side view of the complexly shaped interlocking metal parts and the front screw that connects the two parts.

　Another notable feature is that it is equipped with a memory-in-pixel (MIP) LCD, ensuring visibility from a variety of angles and under various light sources.

"GMW-B5000D-1CJF"

The GMW-B5000D-1CJF is a model with a classic design in the series, dressed in the coloring of the "Origin" model that debuted in 1983. The square exterior design has been reconstructed using stainless steel, and the case, bezel, and band have a unified finish that creates a sense of texture throughout.

　Shock resistance is ensured by a cushioning structure with resin parts placed inside the case. In addition, the part where the case and band connect has a three-pronged structure, which disperses the impact on the connecting pipe, covering this part that is susceptible to impacts.

　In terms of functionality, it is equipped with Bluetooth, Tough Solar, and standard radio wave reception, allowing you to obtain accurate time in a wide range of areas.

This is a one-of-a-kind piece that allows you to enjoy the texture of "full metal" and the atmosphere of "Origin."

GMC-B2100D-1AJF

　The 2100, also known as the "Casioak," features an iconic octagonal bezel. The GMC-B2100D-1AJF is a 2100 model with a full analog display and chronograph design, combined with a full metal exterior. Equipped with a slim yet highly functional module, the watch boasts a compact size of 51.3mm x 46.3mm x 12.4mm, while still offering the usual high-performance features, including a chronograph (stopwatch), Tough Solar, dual timekeeping, and Bluetooth connectivity for smartphones.

　With its not-too-large size and "full metal" texture, this G-SHOCK is easy to match with a business suit.

Summary: The symbol of Casio technology: the "full metal" G-SHOCK

　The Full Metal Series realizes the shock-resistant structure that G-SHOCK has cultivated with a "full metal" metal exterior. Because metal transmits shocks easily and increases weight, the case and bezel are designed with a multi-layered structure and plastic cushioning parts inside. This structure maintains the concept of the original model while ensuring shock resistance that matches the characteristics of the material. In addition, the finishes for the metal exterior are diversified, including mirror, hairline, and IP treatment, giving the watch a different look from the plastic models. With the expansion to both the 5000 and 2100 series lines, there are more options, making it a watch that allows you to enjoy both high quality and the character that is characteristic of G-SHOCK.