Casio G-SHOCK GM-S2100 Series 20 Bar Water Resistant GM-S2100PG-1A4JFProduct Highlights Introducing a model featuring a metal material from the GA 2100 series, which inherits the "octagonal form" adopted in the first generation model "DW 5000C" of G SHOCK, a brand that has been pursuing toughness and evolution since its inception in 1983. Based on the GMAS2100, which has been thoroughly downsized and slimmed down to fit any occasion within the GA 2100 series, this model enhances its texture by incorporating a tough