It comes with a dongle to connect to your remote control. It lets you select the plane or Helicopter you want to fly from a broad selection of fixed wing aircraft… propeller, jets and gliders. In addition, you can scan in photos of a model plane you’d like to fly, feed in its parameters, and using the included Reflex RMK Model Editor construct a custom model. (Info from here)

http://www.reflex-sim.de/

Details at http://www.helihobby.com/html/reflex_sim.html