Nautica Men's Quartz Stainless Steel and Resin Sport Watch(Model: N28504X) Design inspiration from vintage, early 1900's deep sea diving helmets The screw down crown displays a red indicator through a window on the stem when the crown is screwed down tight into position. Chronograph movement Titanium Frame Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving