Product Description Since Casio invented the first electric calculator in 1957, it has been a leader in digital communications and advanced technology. Among Casio's most notable achievements is the first shock-resistant watch. The Casio G-Shock watch was first designed in 1983 by a Casio engineer named Keiko Abe. Who strived to create a watch that never breaks and thus the G-Shock is a staple in the sports watch category