Garmin Hand Held Receiver GARMIN eTrex Venture HC Hand Held Receiver w Built in GPS Patch Antenna. New high sensitivity GPS receiver. 24 Mbyte of internal memory for storing detailed maps. WAAS enabled, 12 parallel channel GPS receiver. Built in GPS patch antenna. Display 1.3 in W x 1.7 in H, 256 color, high resolution, transflective TFT 176 x 220 pixels. LED backlit display and keypad. Battery life up to 32 hours typical use using two AA alkaline batteries.Includes a built in Americas autoroute basemap with automatic routing capabilities including highways, exits and tide data USA only. 500 user waypoints with name and graphic symbol 20 reversible routes, 50 points per route.