Swiss Legend Men's SL-10125-01 Challenger Stainless Steel Watch with Black Band Round stainless steel watch with unidirectional bezel featuring tachymeter and black dial with chronograph functions, date window at four o'clock, and luminous hour markers at three and nine o'clock 49 mm stainless steel case with synthetic-sapphire dial window Swiss quartz movement with analog display Silicone band with buckle closure Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving