Seiko Men's SPC003 Sportura Retrograde Chronograph Watch Quality Japanese-Quartz movement 1/100 Second Retrograde Chronograph, can measure up to 40 minutes in 1/100 second increments repeatedly up to 120 minutes, chronograph can measure split time Titanium Carbon Nitride plated bezel; Lumibrite hands and hour marker Screwdown crown and caseback; Analog Chronograph measures split time Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving