Casio G-Shock GA-2100 Octagon Series Watches

Taking toughness to the limit. G-SHOCK, the watch that bought the new concept of toughness to the timepiece. It began with a reckless challenge to the conventional wisdom of the day, a developer's belief that it was possible to construct a watch that wouldn't break, even if dropped. Project Team Tough was formed to build it in 1981. The team created over 200 prototypes one after another over a period of about two years. They finally arrived at a shock-resistant structure. This marked the birth of a technology that is tough to the core.