Swiss Legend Men's 10125-11-BB Challenger Analog-Display Swiss-Quartz Silver-Tone Watch Luminous round watch with textured black dial featuring contrast Arabic numerals, date window at 4 o'clock, covered pushers, tachymeter at unidirectional bezel, and chronograph with 60-second, 30-minute, and day of the week sub-dials 48 millimeter stainless steel case with synthetic-sapphire dial window Swiss quartz movement with analog display Stainless steel five-link bracelet with deployant clasp and push-button closure Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving