From the Seiko 5 Sports collection and the Automatic (with manual winding) movement. This Men's watch has a stainless steel case with a black ion finish and a case diameter of 39.4mm. This watch also has a black dial with a 24 hour inner ring, luminous (LumiBrite) hands and markers, and a black nylon strap. Other features include a screwdown see-through caseback, and a day/date calendar. Water resistance is 100 meters.