95% new, used seldomly with original receipt.
*Trackball Mouse with Scroll Ring for comfort and precision
*Customizable 2-Button design via TrackballWorks software
*Compatible with Windows (including Windows 8) and Mac OS Computers
*Scroll ring allows fast, easy scrolling of web pages and documents
*Uses far less desk space than a mouse
*Optical technology for precise tracking - no cleaning required
*Click-free scrolling
*USB connectivity