Adesso 2.4 GHz Wireless Ergonomic Trackball Keyboard
Adesso, Inc WKB-3500UB
Wireless Connectivity, RF, 30 ft, 2.40 GHz, USB Interface, 105 Key Next Track, Previous Track, Refresh, Search, Forward, Wake-up, Play/Pause, Volume Up, My Computer, Mute, Sleep, ... Hot Key(s), English (US), QWERTY Layout, Trackball, Membrane Keyswitch, Black