Casio Men's SGW400H-1B Sport Multi-Function Grey Dial Watch Multi-function watch with silver-tone luminous hands featuring altitude measurements function and world time display for 31 time zones and 48 cities 47 mm resin case with mineral dial window Japanese quartz movement with analog and digital displays Features resin band with buckle closure, date display, and thermometer function Water resistant to 100 m (330 ft): In general, suitable for swimming and snorkeling, but not scuba diving.