G-SHOCK has become a synonym for Casio watches. The greatest feature of this watch is shock resistance. Casio aimed to produce a watch that was tough enough not to break even when it was dropped. In 1993, ten years after product launch, G-SHOCK became a hit product around the world. It got wide attention for being resistant to breakage and damage during vigorous exercising and when diving undersea.
Excellent shock resistance was achieved by use of hard plastic, an outer urethane cover, and a hollow structure inside the case designed to suspend the module inside.(Photo: The first G-SHOCK)