Taking the G-Shock toughness to a new level, the GST-W300 and W310 series uses an innovative layered guard structure of blue ion plated stainless steel and resin, to give the watch 200m water resistance, shock resistance, dust and vibration resistance, in a newer midsize 44mm case, without losing any of the impressiveness and functionality. Inside the watch is an ana-digi movement with multi-band 6 radio controlled time keeping, tough solar power, and backlight, as well as world time, alarm, chronograph and countdown timer. Fitted on a black rubber and resin strap for maximum resistance.