The Sonos CR200 is the wireless touchscreen remote control that's included with the Sonos Digital Music System BU250. It replaces thethat was available with earlier iterations of the Sonos bundle.
Additional CR200s can be purchased for $350 each (with included charging cradle), providing the ability to control the Sonos multi-room audio system from additional locations throughout the house. However, it's important to note that the--a free download from the iTunes App Store--will deliver much of the same functionality of the CR200 to any iPhone or iPod Touch.
For more information on the Sonos CR200, see the full review of the.