Invicta Men's 5363 Pro Diver Chronograph Watch Precise and high-quality Swiss-quartz movement Sapphire-coated-mineral crystal Case diameter: 42 mm Stainless-steel case; white-and-black dial; unidirectional bezel; date function; chronograph functions Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving