For flawless presentations, Logitech Trackball Offers a radio wireless solution that lets you control presentations from up to 30 feet from the computer without pointing the device at the system. Infrared devices don’t come close. Uses 2 standard AAA batteries.

Feature Descriptions:
Cordless freedom for more interactive presentations.

* Digital radio technology works up to 30 feet away
* Customizable buttons for previous slides, ESC, or other functions
* Highlight important points
* Uses 2 standard AAA batteries
* Works without pointing at your computer
* Move presentations forward or backward with ease

System Requirements:

* Min Window 98 or Xp
* Mouse port (PS/2)