The Casio G-SHOCK GA2100-1A1 watch is shock resistant and powered by a quartz movement contained within a 48.5mm x 45.4mm black case. The black dial has both analog and digital time displays. Features include world time, 1/100-second stopwatch, a countdown timer, five daily alarms, and a full-auto calendar. The black resin strap includes a tang buckle. Water resistant to 200 meters.