The Noteworthy Optical Mouse features a patented cord storing design that retracts the 2.5 foot USB cord completely inside of the mouse for easy travel. The cord can also be adjusted to any length and the ergonomic, ambidextrous design helps prevent palm strain. Utilizing the latest 1,000 DPI optical technology for precise tracking, the Retractable Optical Mouse helps keep the workspace neat without the clutter of excess cables.