Taking the G-Shock toughness to a new level, the GST-W300 and W310 series uses an innovative layered guard structure of 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.