Freestyle Unisex 10022918 Mariner Tide Digital Display Japanese Quartz Blue Watch Imported Japanese quartz digital tide movement, providing a valuable asset to the boating/sailing/fishing/diving communicates worldwide with: 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: 48mm Water resistant to 330 feet