The HP Wireless 3-Button Optical Mouse is the affordable wireless desktop optical mouse solution that combines functionality with style. Stylish design: High-tech piano black finish and sculpted edges gives this mouse a distinctive style Ultra-comfortable design: Symmetric design for right or left handed comfort and textured sides gives you enhanced control feel. Rubber scroll wheel improves grip and feel. Wireless freedom: no wires to tangle or limit movement Optical Performance: high-precision sensor provides precise, smooth and responsive tracking. No ball and no cleaning. Smooth and Accurate: Smooth and fast scroll wheel for optimum control and accuracy. Teflon feet for smooth and accurate movement on most surfaces. Save energy: the integrated on/off button at the bottom of the mouse allows you to conserve batteries. 2AA batteries included. LED indicator: The convenient LED on the top of the mouse shows connectivity and battery level. Easy setup: USB dongle connectivity, standard 3-button operation, and no driver or CD installation required for fast and easy plug and play use.