Fortis Men's 630.10.92 M Cosmonauts Chronograph Stainless Steel Watch Round watch featuring tachymeter bezel, luminous dial accents, date window, and three chronograph subdials 38 mm stainless steel case with antireflective-sapphire dial window Swiss automatic movement with analog display Stainless steel bracelet with fold-over clasp Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving.