2.4GHz RF Mini Wireless Keyboard touchpad for computer Model No.: SW-K608RF Feature: To enjoy PC Multi-media Entertainment at home; Convenient & efficient for conference Presentation & lecturing; Multi-touch pad for moving cursor like real mouse working. OS required: Windows 2000/XP/Vista,Win CE,Windows 7; Linux (Debian-3.1,Redhat-9.0;Ubuntu-8,Fedora-7.0 tested) Mac. Specifications: 2.4G Hz RF Radio transceiver,30M/100feet Max,distance; Dimension:150mm x 80mm x 12.5mm//5.9'x 3.1'x 0.5'; Weight:110g/0.22 pound .