Kensington Wireless Presenter $20.71

The Kensington Wireless Presenter lets you remain in control of your presentation. Conveniently portable and easy-to-use, it frees you from distraction and allows you to focus on what matters most - your presentation. 2.4GHz of wireless technology let's you concentrate on your presentation and forget about wires and cords. Palm-sized design features a convenient, one-touch start button

Buy.com is carrying this Wireless Presenter for $20.71