This USB Optical Mouse with 800 DPI is an excellent tool for professionals. The 800 dpi resolution offers twice the accuracy of standard mice, and is ideal for graphics and web designers who demand pinpoint accuracy. It is stylish, lightweight, extremely comfortable, works on most surfaces, and needs just inches for accurate movement. The ergonomic contour design offers comfortable use for hours; moreover, its greater speed reduces excessive and potentially harmful arm movement. Its optical technology provides precise tracking on almost any surface. Just plug into the USB port and its works within seconds. This unit is USB ready, Plug-n-Play, and Hot Pluggable.