With 500 pre-programmed tide locations in graph or detailed display, the Rifles Tide watch is the perfect combination of function and value. An alarm, stopwatch, countdown timer and light put all the data you need right at your fingertips. The lightweight polyurethane construction is durable and tested for water resistance. Pre-Programmed Tide Function (500) - Electronically Stored Tide Charts For 500 Preset Locations Worldwide. Case Width: 41Mm 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 Stop Watch Dual Time Light Countdown Timer ABS Case - A Tough Lightweight Plastic with a High Impact Strength. Used in Case and Strap Construction. Depth Tested to 100M Polyurethane - Repels Water, Withstands Dramatic Temperature Changes and is Highly Tear Resistant.