GPS made simple. Package Includes: 1 D-Tour GPS unit, 1 Quick Start Guide, 1 USB Cable. Runs on Windows (XP SP1 or later) and MAC (10.4.9 or later). Weather Resistant Construction. Stores and locates up to five locations. Includes Time (military or civilian)/Temperature (Fahrenheit or Celsius)/Altitude. Distances in Yards/Miles or Meters/Kilometers. Latitude and Longitude coordinates. Logs up to 48 hours of trip data.