The development of the G-Shock began in 1981, Casios head of watch design was engineer Kikuo Ibe. Ibe pulled together a project team of just three members and called them Team Tough. The designers were really Guided by a Triple 10 development concept : withstand a 10 meter drop, withstand 10 atmospheres of water pressure, and have a battery life of ten years. It would take over two years to release the first G-Shock, the DW-5000C. Ibe and his team had to work through some serious difficulties on the way.

As the number of prototypes passed 200, Team Tough was still far from the design solution they sought. It was then, on a chance visit to a playground, that Ibe got his stroke of inspiration: a bouncing rubber ball. Ibe finally visualized the shock-resisting system that forms the basis of all G-Shock watches. He reasoned that the center of the ball doesnt suffer the shock that the exterior does. He and his team set out to design a watch to resist shocks in a similar way.

Now there are many different G-shock series, depending on your needs:

And more.