Casio Men's G-SHOCK G-STEEL Solar Radio Wave Mid-Size - GST-W300G-1A2JFProduct Highlights While maintaining the traditional Layer Guard structure and functions, we have achieved a downsizing of approximately 90% for the entire case. By significantly reducing the module size, we were able to downsize and slim down the case, resulting in a mid size design. We pay attention to detail in the finishing, with the resin made indexes that withstand impact, achieved through laser cutting of the vapor deposited film on the