Who invented the g shock in the 90?

The G-Shock watch was invented by Casio's engineer Kikuo Ibe in the 1980s, with the first model, the DW-5000C, released in 1983. The G-Shock line became particularly popular throughout the 1990s due to its durability and innovative features. While Ibe was the key figure in its creation, many designers and engineers contributed to its evolution and various models during that decade.