The Core. You’ve probably heard it in fitness and workout articles, or when you’re watching YouTube videos about planking. Your core supports the rest of your body and so strengthening it is crucial to your physical health. In watchmaking, the core refers to the movement within the watch case, which drives all of its operation. The more powerful the movement, the more functions the watch can perform. With quartz movements, it’s all about the precision of the quartz oscillator and the chip that controls the rest of the movement’s operation.

Watch cases are designed to support and protect the movement of a watch while displaying its functions, but within the case, there are still opportunities for the movement to be damaged, through shock, heat and cold environments, water and dust, among other factors. When Mr Kikuo Ibe invented the G-Shock series of timepieces, he had the aim of creating a watch that would meet the requirements of a 10-metre drop onto a hard surface, and 100-metre water resistance. Casio’s G-Shocks have more than met this expectation, and deliver greater performance than the original G-Shock watch, with Bluetooth and other functionality built in.