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Philosophy - G-SHOCK 40th Anniversary | CASIO

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40 Years of Toughness

In 1983, G-SHOCK established a new genre of toughness in watches by embodying the idea of ​​breaking the common sense of shock-resistant structure with the first model DW-5000C.
The history of constant evolution finally reaches the milestone of the 40th anniversary.
Structure, function, materials and design. We stick to all of them without compromise and pursue further toughness.
The aim was robustness that could be used in any environment.
Practicality that works reliably under any circumstances.
All to fulfill the ultimate goal of being almighty tough.
Now and in the future. Proud to be tough.
Aiming for even greater heights, G-SHOCK's challenge continues.
Real toughness inherited beyond the times is here.


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40th Anniversary Since 1983

Challenge The Limits

Kikuo Ibe at meeting table
Damaged G-SHOCK parts in a container
Illustration of man dropping a watch out of a building window



Seeking greater strength, aiming for greater heights.
Endless challenge to support the evolution of G-SHOCK.


Toughness structure that can withstand the extreme.

cutaway illustration of a digital G-SHOCK watch


Impact resistant structure

Hollow structure, omni-directional guard structure, and cushioning material protection for important parts improve durability against drop impact and vibration.

G-SHOCK digital MUDMAN watch


Mud resist structure

All buttons are covered with urethane material, and a dust-proof and mud-proof structure that shuts out dirt and dust is adopted.

Cutaway illustration of a G-SHOCK watch



A reinforced structure that withstands three types of gravitational acceleration: impact force, centrifugal gravity, and vibration. Uses α-Gel®, which has excellent vibration absorption, as a measure against vibration.

Metal bezel of G-SHOCK watch


Core guard structure

The frame consists of a bezel, back cover, and stainless steel pipe to protect the inner case. The concept of a hollow structure is realized with a metal exterior.

Exploded view of watch crown parts


Cladding guard structure

The crown, buttons and guard parts are integrated to improve impact resistance. The head cover part of the crown unit is lined with α-Gel®.

Exploded drawing of G-SHOCK watch


New layer guard structure

We have developed a new structure that places resin cushioning parts inside the case, pioneering a new frontier in toughness design.

Exploded view of watch parts


Full-metal 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.

Exploded view of watch body


Carbon core guard structure

Offering strength, lightness, and excellent durability, the carbon fibre-reinforced resin case protects the module. 

Watch strap with detach mechanism


Slide lever changeable band

The band can be replaced easily by operating a lever at its base.


Ongoing pursuit of new materials

Black square faced digital G-SHOCK watch


Urethane resin

Adoption of lightweight, easy-to-process urethane resin as a case material, significantly expanding the range of possibilities for form, design and color.

Silver digital MR-G G-SHOCK watch


Full-metal Case

Development of an elaborate exterior design and reinforcement of the module to realize a shock-resistant full-metal case structure.

Analog G-SHOCK watch


Metal Twisted Design

Completion of a tough design of remarkable “functional beauty” that combines strength and beauty in a case constructed of both metal and resin.

Digital square faced G-SHOCK watch with multi-band 6


Carbon-fiber Insert Band

Realization of a remarkably tough band by inserting a carbon-fiber material with superior tensile strength into resin.

close up of G-SHOCK crown and tough looking bezel


Titanium 64 Bezel

Adoption as the bezel material of titanium 64, which boasts greater strength than pure titanium while retaining titanium’s characteristic lightweight and corrosion resistance.

G-SHOCK carbon bezel


Carbon Bezel

A bezel constructed of a lightweight, high-rigidity carbon material produced by applying microstructure control technology to combine state-of-the-art carbon fiber with resin.

Exploded view of watch parts


Carbon fiber reinforced resin case

The shock-resistant structure unique to G-SHOCK protects the module, with a carbon fibre-reinforced resin case offering strength, lightness, and excellent weather resistance.

Mud on a blue watch band


Fluoroelastomer Band

The fluoroelastomer material provides an excellent fit on the wrist with its soft feel, not to mention exceptional resistance to staining and hydrolysis.

Multi-colored G-SHOCK watch band links


Titanium Alloy

An entirely new alloy developed for G-SHOCK with a hardness exceeding that of pure titanium offers excellent processability and suitability for mirror finishing.

Biomass materials and G-SHOCK FROGMAN watch bezel and band


Biomass plastic

Using renewable organic resources such as castor oil plants and corn helps reduce the ecological footprint.


Advanced functions enabled
by digital technologies

Multi function sensor display on G-SHOCK watch


Sensor Technologies

Practical application of various miniaturized sensors, beginning with a temperature sensor, to take measurements of such environmental phenomena as directions, atmospheric pressure, altitude and water depth.

G-SHOCK Fox fire watch with branded backlight


EL Backlight

Development of the EL backlight, a highly practical dial lighting function.

G-SHOCK digital watch


Solar-powered Timekeeping

Simultaneous installation of the Tough Solar recharging system that converts light into power and a standard time radio wave reception function that corrects the time automatically.

G-SHOCK with Bluetooth and mobile device


Smartphone Link

A function enabling linkage with a smartphone via Bluetooth® communication that expands the possibilities for watch functions to include simplified setting and automatic time correction.

G-SHOCK watch in front of radio tower and satellite cutout


GPS Hybrid Radio-controlled,
Solar-powered Timekeeping*3

A system that receives both GPS satellite time-calibration signals and standard time radio waves and uses them to display the correct time at the current location anywhere in the world.

*3 A system driven by Casio's original solar power system that employs GPS (Global Positioning System) satellite signals to determine the current location and correct the time.

Analog Digital G-SHOCK watch with satellite and mobile device illustration in the background


Built-in Bluetooth®
+ GPS Hybrid Radio-controlled, Solar-powered Timekeeping

A function integrating GPS Hybrid radio-controlled, solar-powered timekeeping*3 with Bluetooth® communications to keep the correct time automatically based on accurate time information.

*3 A system driven by Casio's original solar power system that employs GPS (Global Positioning System) satellite signals to determine the current location and correct the time.

Black G-SHOCK GAB2100 analog digital watch with mobile device in the background


BLE Solar

Solar-powered timekeeping with Bluetooth® for enhanced accuracy and reliability


Trajectory of the tough design

Black digital square faced G-SHOCK watch


Square Design

Adoption of a square design that prevents the buttons from contacting flat surfaces. Ongoing functional evolution has remained a constant standard ever since.

Analog Digital G-SHOCK watch


Analog Design

Realization of a shock-resistant structure with hands mounted on the dial that expanded the range of design possibilities to include analog/digital combinations.

Digital G-SHOCK FROGMAN watch


Asymmetrical Design

Adoption of a bilaterally asymmetrical design with the case and band offset to prevent interference from the back of the wrist.

Yellow digital square faced G-SHOCK watch


Bumper Protector

A design of watches with a protector installed to protect the glass from external shocks that gained popularity primarily on the street scene.

Black and green analog digital G-SHOCK watch


3D Face Design

Development of a dial comprising a complex assembly of 3D parts in a large, high-impact case.

G-STEEL  analog watch with tough solar


Disc Dial Chronograph

Adoption of a disc dial capable of analog display of multiple functions on a complex combination of 3D dials.

Iridescent multi-colored MT-G G-SHOCK watch


Rainbow IP

Applied with teqniques such as vapor deposition and coating.

Multi-colored MT-G G-SHOCK watch


Multi color carbon

Hewn from laminated carbon and colored glass fiber, the bezel design expresses the mystical coloration and multilayered patterning. No two watches feature exactly the same coloration. Each shines with a radiance all its own.

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