A new generation of square design with shock-resistant full-metal structure.

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G-SHOCK was born in 1983 as the first and only tough watch. Since then, the DNA of the first model DW-5000C has been passed down through the generations. Like the shock-resistant structure comprising the core technology of that original G-SHOCK, the square design adopted as its proud final form has been transmitted unchanged to the successive models as a symbol of its enduring tough spirit. And today, in its 35th year, G-SHOCK has realized renewed fulfilment with the model GMW-B5000, a Bluetooth®-equipped, radio-controlled, solar-powered timepiece with a full-metal shock-resistant structure. Technological innovation in pursuit of improved materials, structures and functionality has achieved a new level of toughness merging the basic G-SHOCK concepts of Constancy × Evolution.



Newly developed structure

Full-metal shock-resistant structure

The new shock-resistant structure

Fine-resin cushioning parts are inserted between the bezel case and the inner case. Besides achieving a highly accurate fit, this structure responds with reactive force to ease shocks when tiny protrusions in the cushioning material are compressed.

Fortification of moving parts.

Band connection structure

The double-lug structure conventionally used to connect the band to the case has been redesigned to create a three-pronged lug structure. Shocks to the connecting pipes and button shafts are dispersed, and the band attachment is reinforced.

Protecting the button shafts from shocks

Button structure

The specially developed button structure combines large cylindrical forged buttons with internal pipes that guard the vulnerable button shafts from the inside against lateral shocks.

Increased airtightness specifications

Screw-lock case back

The airtight, heavy-duty screw-lock case back replicates the first model’s. The slanted surfaces are mirror-finished, and DLC (diamond-like carbon) treatment is applied overall for enhanced wear resistance.

Achieving G-SHOCK’s unique shock-resistance capabilities in full metal required a complete redesign of the external structure, including the case, band and buttons. A new internal structure employing fine-resin cushioning material was developed to offset the more powerful dropping shocks resulting from weight added by using high-strength stainless-steel parts.


Our commitment to quality

A fusion of strength and beauty.

Bezel case

After sculpting the form through repeated forging, cutting and polishing, artisans apply mirror polishing and hairline finishing to the surfaces in pursuit of flawless beauty. The case back surface is finely machined to remove any unevenness and assure an accurate fit with the cushioning parts.

Solid feel and superior wearing comfort.

Metal band

The design of the first model’s resin band is reproduced by applying dimple-processing to the stainless-steel band pieces. Each piece is alternately pressed and polished in an unstinting effort to assure beautiful finishing that extends to the bottoms of the dimples.

Extending attentive workmanship to unseen parts

Inner case

After a process involving 10 or more forging and cutting steps, a complex form with integrated lugs and complicated shapes comprising various fitted and cushioning parts takes shape. Precision parts facilitating smooth, accurate assembly are produced.

Maintaining G-SHOCK's origins without change

Original square design

The design of the first G-SHOCK model has been maintained continuously from the origin. Casio’s efforts in pursuit of universal usability have encompassed the structure with its undivided attention to shock resistance, the large LCD offering excellent visibility and the minimalist form that eschews any interference with wearing ease and comfort.

The use of metal material requires the most advanced processing technologies to reproduce the design of the first G-SHOCK model. We apply leading-edge forging and cutting technologies in our commitment to evoking the beauty of finely inscribed details and to attaining a finish that maximizes the beauty of the metal textures. The result is a level of quality that sets a new standard for tough watch design.


Progression to a new-generation engine

The heart of a multifunction watch.

LSI layout

The mounting position of the standard time radio wave antenna is calculated to ensure stable radio reception sensitivity inside a full-metal case. In this and other ways, the highly precise LSI design has solved the problems associated with a metal exterior and multi-functionality.

Breakthroughs in functional innovation.

Dedicated design module

We have leveraged our proprietary high-density mounting, miniaturization and power-saving technologies to install multiple functions without increasing the watch’s size. This innovative functional evolution has included such achievements as simultaneous installation of Bluetooth® communications and radio-controlled, solar-powered timekeeping.

Challenging absolute accuracy

Bluetooth® + Radio-controlled, solar-powered timekeeping

Time correction is conducted by either Bluetooth communications or standard time radio wave (Multi Band 6), depending on the circumstances. Reception of the most recent time zone and Daylight Saving Time information assures that the correct time is displayed at all times.

Evolving dial-lighting technologies

Full-auto LED backlight (Super illuminator)

An LED backlight illuminates the LCD with high-brightness light. It detects ambient light in the surroundings automatically and switches on with a tilt of the wrist in the dark. New features such as fade-in/out and white/orange lighting add further versatility.

Advanced digital display


An STN LCD has replaced the conventional TN LCD to take advantage of its higher contrast and wider viewing angle. The face, including the logo and function display, is completed in a design mirroring the layout of the first model.

Enhanced visibility

Film solar panel

The material employed for the solar panel has been changed from glass to an easily processed film. An aperture is opened in the center of the panel to suppress reflections of external light and improve the LCD’s visibility

Legacy of the universal ratio

Display aspect

The LCD’s approximately 16:10 aspect ratio approaches the angle of human vision. Adopted in pursuit of clear visibility, this ratio has been handed down from one model to another since the origin to benefit from its closeness to the Golden Ratio, which is considered to represent the most beautiful proportions in nature.

G-SHOCK has introduced one pioneering functional innovation after another. These have included light functions to enhance the visibility of the dial, Tough Solar power supporting stable operation of multiple functions, standard time radio wave reception for accurate timekeeping and Bluetooth® communications for versatile multifunction control. The countless challenges we faced in our mission of functional evolution have now been overcome. The new GMW-B5000 represents the culmination of G-SHOCK’s solutions.