Mogo Presenter Mouse Pc Toggle between mouse function and presenter function at the touch of a buton Centre touch pad works like a scroll wheel on a normal mouse, scroll down pages, or for changing slides, ending slide show etc Centre touch pad works like a scroll wheel on a normal mouse, scroll down pages, or adjust volume Charges in your PCMCIA slot on your laptop and never needs batteries, completely wireless via bluetooth connection Requires PCMCIA slot for charging, (or cable- not included), Windows operating system compatible. Bluetooth, either built in or via dongle (not included)