GPSMAP76: Detailed basemap with cities, highways, interstates, exit info, rivers, lakes; preloaded with worldwide cities, navaids, Americas and USA tide data. WAAS capable GPS gives greater location accuracy. Large, sharp, four-level grayscale screen for excellent separation and contrast. 500 waypoints with names and graphic symbols. 50 reversible routes with up to 50 points each. Automatic track log. Trip computer gives current speed, average speed, resettable max. speed, trip timer and trip distance. Alarms: anchor drag, approach and arrival, off-course, proximity waypoint, shallow water and deep water. Built in celestial tables . 100 plus user map datums. Position format: Lat/Lon, UTM/UPS, Maidenhead, MGRS. Loran Tds and other grids, including user grid.