Genuine MC Saite 81-Key Portable 2.4G Wireless Keyboard w/ Trackball Mouse & Receiver (2*AA)
Color: Black - Operation distance: 10m (32.8feet) - Features 81-Key - Resolution: 400/800/1600 dpi adjustable - 2.4GHz wireless transmit - Plug and play - No software installation required - Support Windows 95/98/2000/XP/ME/NE/Vista - Powered by 2 * AA batteries (included) - Receiver & English manual included