Beside the GPS receiver, the eTrex Vista has an electronic compass and a barometrical altimeter. In addition, it has 24 MB of built-in memory to store even more detailed information, such as local roads, restaurants and points of interest. 15 seconds after a warm start, meaning there are valid coordinates of the satellites available, or approx.
Water resistant up to approx.
Where no movement is not possible, a compass is needed. Even though a GPS provides accurate elevation information, the value slightly varies continuously. A barometrical altimeter is therefore more accurate, especially when summarizing elevation changes. Time To First Fix, time until the first information about the current position is acquired. Find waypoints, favorites, cities and exits Extended search function for points of interest, addresses and intersections , if there is a MapSource map available in memory.