The Targus Wireless Calculator Keyboard and Media Mouse provide wireless freedom for a clutter free workspace. Not only does the keyboard have a built-in calculator and Internet hot keys but it also enhances multimedia functionality for users wanting to control music and video applications from their desktop.¤¤The 800 dpi media mouse has a tilt wheel and comes with a USB recharging cable ensuring that you never run out of power. 2.4 Ghz RF design allows a working range of 6 meters.