The Kensington Wireless Presenter with Green Laser Pointer works up to 65 feet away from the source of the presentation. Just plug the included USB receiver into your device displaying the work and you can roam around the room and use the Rubber textured grip device to laser point and highlight key items. The USB receiver works on a 2.4GHz wireless connection then stores inside the presenter. Details: http://us.kensington.com ___ Contact Gregg Ellman at email@example.com. ___ (c) 2010, Gregg Ellman. Distributed by McClatchy-Tribune Information Services.