Freestyle Shark Tide Trainer Black/Olive Unisex Watch 10019170 Imported Japanese quartz digital movement, 100 hour chronograph, 200 lap memory counter, dated training log, 5 interval timers, preset heat timers, customizable alarms for training reminders (nutrition/hydration), 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 underwater), comfortable. Durable hardened mineral crystal protects watch from scratches, water resistant to 330 feet (100 m). Japanese quartz movement Case diameter: 38mm Water resistant to 330 feet