G-Shock is the ultimate tough watch. It was born from a developer's dream of "creating a watch that never breaks." Guided by a "Triple 10" development concept, the design teams sought a watch with 10-meter free-fall endurance, 10-bar water resistance and a 10-year battery life. The number of experimental prototypes built for endurance testing reached over 200. Structural development & parts improvement took approximately two years. After a long process of trial and error, G-Shock was finally launched.