ANNAPURNA REGION is the latest in an exciting new series of Garmin-compatible digital maps covering the major trekking and climbing regions of Nepal and the Himalaya. TrekMapGPS products install on a PC for uploading to your GPS unit. The maps can be previewed in Garmins MapSource (not included) or other compatible software for route planning or reviewing. Upload to your GPS using MapSource or an upload utility such as SendMap20 by cGPSmapper. Plan your trip using Garmins Trip & Waypoint Manager or other compatible software. Compatible GPS units include GPSmap, eTrex, Quest, Rino and zuno models.