Targus W615 Wireless BlueTrace Mouse features 6-Key function (Left Button / Right Button / Scrolling Wheel / Forward / Backward / DPI Adjustment) with BlueTrace 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.