The Targus Cord-Storing Optical Mouse features a patented cord storing design that retracts the 61cm long USB cord completely inside of the mouse for easy and tangle-free travel. The cord can also be adjusted to any langth and the ergonomic, ambidextrous mouse design helps prevent palm strain. Utilizing the latest 1,000 DPI optical technology for precise tracking, the Cord-Storing Optical Mouse helps keep the workspace neat without the clutter ao excess cables.