This traveling, retractable, optical USB/PS2 mouse provides a great solution for the mobile professional. Take it on the road, and use its optical precision on virtually any surface--anywhere you happen to be using your laptop! Using optical technology, the mouse will track every motion with digital accuracy. The retractable cord makes it easy to move and pack. Say goodbye to long, messy cords. Click on Overstock.com and save big on high performance computer accessories. Features include: Optical technology USB or PS/2 interface High resolution 800 dpi Retractable cable PC/Mac compatible