Targus W574 Wireless BlueTrace Mouse features 6-Key function (Left Button / Right Button / Scrolling Wheel / Forward / Backward / DPI Adjustment) with Blue-Trace technology, it combines the power of optical technology with the precision of laser for remarkable tracking on almost any surface including wood, granite and carpet. And its 3 Levels DPI adjustment (800/1300/1600) provides flexibility for specific usage. Offering wireless freedom and built-in USB receiver storage for ultimate mobility. Comfortable to use with either hand and a scroll wheel for easy navigation, you can move through documents and webpages quickly. Enjoy a clutter-free workspace at your desk or on your coffee table with this 2.4GHz wireless mouse.