Seiko Men&#39;s SKA447 Sport Kinetic Black Ion Finish See-Thru Case back Watch Imported Men's kinetic , powered by the movement of your wrist , 3 hands Environmentally safe (No Suggestions) hands and markers, stainless steel black ion case and band, black dial One way rotating bezel hurdle crystal Double locking 3-fold clasp with push button release, see thru screw down case-back Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving