Swiss Legend Men's 10125-BB-11-SA Challenger Analog Display Swiss Quartz Black Watch Round watch featuring luminous hands/markers, tachymeter at outer dial, and numbered unidirectional bezel Also features screw-down crown, date window, and chronograph functions with 60-second, 30-minute, and day-of-the-week subdials 48 mm stainless steel case with synthetic-sapphire dial window Swiss quartz movement with analog display Stainless steel band with deployant-clasp closure Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving