it's a bluetooth mouse & powerpoint presenter that you can put in an unused pcmcia or expresscard slot in your laptop for storage and recharging :
http://www.newtonperipherals.com/index1.html
I've been using one for a few months now and it works great....
note that it is a bit flimsy, so you do have to be careful not to break it [:)]
(it's not cheap though, I got mine from expansys http://www.expansys.nl/p.aspx?i=161463)
Marcel