This system is not compatible with X5's with comfort seats. This system

includes a single disc DVD player that mounts on the floor between the
rear passengers for easy operation and loading of movies. - Two seven
inch Active Matrix Screens mounted in color matched headrests (by BMW
so you know it will match) - Two wireless headphones are supplied with
the system and are equipped with a battery saving feature that turns
power off if they have not received a signal after 15 minutes. In
addition, each headrest is equipped with headphone jacks for wires
headphones. - A wireless remote has an easy to use layout and can be
used from either headrest - An extra input is included to connect other
devices, such as game systems. Because the system is two channel, one
headrest can play a movie while the other plays a game.

A PDF document on the functionality on this system can be downloaded at http://www.bmwmotorsports.org/pdf/Re...ent_System.pdf

Pictures of the system: