Freestyle Shark Classic Tide Navy/Grn/Blue Unisex Watch 10022917 Japanese quartz digital movement, chronograph, customizable alarms, sunrise / sunset and tide information for 150 beaches worldwide, dual time, countdown timer/stopwatch, standard digital functions and backlight, polycarbonate case with hyrdro-pushers (able to be pushed under-water), comfortable and durable canvas synthetic strap Durable hardened mineral crystal protects watch from scratches, water-resistant to 330 feet (100 m), and all with a limited lifetime warranty Japanese-quartz movement Case diameter: 38mm Water resistant to 330 feet