The leading watch designer for Casio Kikuo Ibe founded a project team consisting of just three members whose aim was to realize an indestructible watch. The members understood, after many attempts and researches that their target was still out of sight. However, Kikuo Ibe was watching kids playing, as he came to the realization that the inside of a rubber band remains completely unaffected by the impact. His team then developed a watch with a hollow design in which the interior module of the watch is floating after this observation. The watches are perfect for everyday use or for sport and leisure activities thanks to their robustness. Falls and knocks are not a problem for the G-Shock watches.