The Targus W575 Wireless Mouse is designed for a comfortable fit in your hand. Its 1,600 DPI optical sensor provides a precise response to mouse movements and its 2.4 GHz wireless technology reducesinterference, delays, and signal drops for excellent tracking. Use the scroll wheel for quick, confident navigation and customizable buttons for one-click access to your go-to docs and music. Just keep the small receiver plugged into your computer's USB port or tuck it away into the convenient storage compartment inside the mouse for those of you always on the go.