Our Classic tide watch - an evolution of technology and development from the leaders in tide. 500 pre-programmed global tide locations, Tide display including precise tide height, next tide time, direction and future forecasting. Water resistant up to 100 meters (330 feet) and backed with a limited five-year worldwide warranty. Module Features: Pre-Programmed Tide Function (500) - Electronically Stored Tide Charts For 500 Preset Locations Worldwide. Versatile Tide Display - Switch Between Graph View and Detailed View Menu Based Interface - Extremely Easy to Use and Set - Say Good Bye to Instruction Booklets Alarm, Stop Watch, Countdown Timer, and Light Future Tide Case: Case Width: 41mm ABS Case - A Tough Lightweight Plastic with a High Impact Strength. Used in Case and Strap Construction. Waterproof Tested to 100M Band: Polyurethane* - Repels Water, Withstands Dramatic Temperature Changes and is Highly Tear Resistant.