The 810 is compatible with optional detailed street or TOPO maps including BirdsEye Satellite Imagery, so it can guide cyclists for touring, commuting or extended activities where they might need onboard maps and navigation.
On a hunt or on a hike: Using a separate TOPO U.S. 24K DVD or microSD card brings you the highest level of topographic detail available, with maps comparable to 1:24, 000 scale USGS maps, featuring terrain contours, topo elevations, summits, routable roads and trails, parks, coastlines, rivers, lakes and geographical points.