These are the ultimate tough watches. The developers sat down and created the watch from scratch, guided by a development concept they called "Triple 10". The new watch needed to survive a 10-meter free-fall, offer 10-bar water resistance and have a 10-year battery life to meet this stringent criteria.

Engineers at Casio made more than two hundred prototypes. The development of the watches took two years, the test data gathered piece by piece by testing the watches to destruction.

After a long, hard process of trial and error, the new watches finally launched. They contained a shock-resistant structure that overturned conventional thinking about watches. This was realized thorough breakthrough thinking, introducing the ideas of a hollow-structured case, an all-directional protective covering and the use of cushioning material to protect critical parts.

Even the strap of the watch is shock resistant. In models with metal bands, the band is made of scratch-resistant pieces and has a structure that defends against shocks by employing wide intervals at the connection points between the band pieces, and adopting a flexible, 150-degree range of band movement.

G-Shock – Key Design features

The G-shock case employs a hollow structure. The watch mechanism is “floated" to protect it from shocks. A full urethane bezel provides all-directional enclosure to prevent direct shocks from striking the glass and buttons. Cushioning material provides extra protection for the key parts such as the quartz oscillator of the G-Shock watch. Many of the watches in the range also feature automatic time calibration. The watch receives time calibration signals and corrects the time automatically.

The design has continually improved and evolved for 25 years, carrying on the toughness of spirit and uncompromising passion that led its developers to persist in their unshakable belief that they could build a better watch.

The watches have proved popular with anyone living an active life, be that surfers, wing suit pilots and rock climbers or the slightly more sedate atmosphere of a recording studio or the concert stage.