Nixon Men's A316180 Supertide Digital Quartz Black Watch Custom digital with pre-programmed tide information - 230 beaches Case diameter: 45mm Stored tide information until 2020, future tide, dual time, wave counter with chronograph 30-25mm custom injection molded polyurethane tapered band Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving