Magellan eXplorist 210 Waterproof Hiking GPS (Discontinued by Manufacturer) Compact 14 channel WAAS GPS receiver with rugged, outdoor-sports design 22 MB available memory for downloading optional MapSend maps and digital content 10 MB built-in basemap includes roads, parks, waterways and more Includes Magellan Geocache Manager software 2.2 x 4.75 x 1.3-inches (W x H x D); 6.1 ounces; and 2.3-inch backlit display