Palm Sized Mini 2.4GHZ RF Wireless Windows Media Center MCE Keyboard/Remote Control with Mouse Track for Windows XP/Vista/7 PC/HTPC Xbox 360/PS3 2.4GHz wireless technology range up to 10M Center positioned mouse track and touch scrolling function Left and right click buttons on top Includes 78 keys for efficient data input Include 11 hot keys and 12 embedded MCE function hot keys