Pulsar Men's PF3183 Tech Gear Flight Computer Watch Quality Japanese-quartz movement Strong mineral crystal protects watch from excessive wear on dial Flight computer, bi-directional slide rule bezel, 1/5 second stop watch, records elapsed time up to 60 min., split time measurement Stainless-steel case; black dial; date function Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving