https://www.firstclasswatches.co.uk/blog/2017/08/g-shock-infographic/

The first G-SHOCK was born in 1983 and was the brainchild of Casio engineer Kikuo Ibe, he set out with an aim to create a timepiece that would still work even when dropped. His new timepiece shattered the reputation of a watch as a fragile piece of jewellery and fused function with design to create the uniqueness that is G-SHOCK