Seiko Men's SNQ099 Perpetual Calendar Black Ion Finish Case and Bezel  Strap Watch Perpetual calendar, 3 hands, date blue minute hand markers Environmentally safe (No Suggestions) hands and markers ,calendar automatically adjusts for odd even months and February leap years Hardlex crystal, buckle clasp, screw-down case-back Black strap, blue stitching, black ion finish case and bezel Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving