By making full use of high-density mounting technology, Casio has developed the slimmest module for a G-SHOCK solar chronograph. To address the all-new shock-resistant structure required by this new thin module, CASIO delivered an even more advanced Dual Core Guard structure. The newly developed guard structure protects the module with a carbon-reinforced resin case and encloses the exterior with metal components, retaining the metal look and texture while reducing the weight, and further protecting the module with a case back featuring raised sides.