Invicta Men&#39;s 5285 Russian Diver Collection Akula Chronograph Watch Precise and high-quality Swiss-quartz movement Durable mineral crystal; stainless steel case; gray Rubber strap Chronograph functions with 60 Second, 30 Minute and 1/10 of a Second Sub-dials; date function Russian Diver's Professional Instrument; gray dial; luminous hands and hour Markers Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving