9 MB North American basemap of highways, major roads, parks, waterways, marine navaids. 23 MB of built-in-memory for downloading detailed maps from MapSend software (sold separately), 9 navigation screens

32 MB of built-in-memory WAAS enabled 3-meter accuracy with 12 parallel channel Let's you set waypoints or go to a preset destination at the touch of a button Additional 23 MB of uploadable memory 9 user-configurable navigation screens and will store up to 20 routes, 500 waypoints, 2,000 track points User data backup is indefinite, stored in nonvolatile flash memory Advanced quadrifilar helix antenna for tracking in dense forests Large easy-to-read display for easy visibility in low-light environments Waterproof and floats