The eTrex Summit comes on the heels of the extremely popular eTrex®, which was designed for both marine and recreation use. This new all-in-one navigation device for the outdoor enthusiast is the first combination GPS, altimeter, and electronic compass. The electronic compass provides bearing information when you're standing still and the altimeter determines precise altitude, so you can tell how high you've climbed and your rate of ascent Total Price 13000 Waypoints/Icons: 500 with name and graphic symbol Tracks: Automatic track log; 10 saved tracks let you retrace your path in both directions Route: 20 reversible routes with up to 50 waypoints (available only by the free update offered on this website) Trip computer: Current speed, average speed, time of sunrise/sunset, resetable maximum speed, trip timer, and trip distance Map datums: More than 100 Position format: Lat/Lon, UTM/UPS, Maidenhead, MGRS and other grids Accuracy: ±2 degrees with proper calibration (typical); ±5 degrees in extreme northern and southern latitudes Resolution: 1 degree Accuracy: 10 feet with proper calibration (user and/or automatic calibration) Resolution: 1 foot Range: -2,000 to 30,000 feet Elevation computer: Current elevation, resetable minimum and maximum elevation, ascent/descent rate, total ascent/descent, average and maximum ascent/descent rate Pressure: Local pressure (mbar/inches HG), 12-hour automatic pressure trend recording Receiver: Differential-ready, 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites to compute and update your position