The live flight radar shows live flight data recieved from the aircrafts transponders as they are approching the Canary Islands in real time. You will notice the aircraft are actually moving.
You can zoom the map in and out to get a closer view or a broarder view, or drag the map and move its location. Hovering your mouse over the aircraft will show the flight number, if you click on the aircraft it will display more live flight information about that flight.
Also available are the Tenerife airport arrivals and Tenerife airport departures live information boards.