The Targus AMW600AP Wireless Optical Mouse features a compact design, wireless USB receiver and convenient scroll wheel for controlling the scroll bar. Its ergonomic curved design adds grip while operating the mouse and is 1600 dpi cursor adjustable, which means it has a high mouse sensitivity so you can easily move the cursor. You can fit the wireless USB receiver into your computer's USB port effortlessly and when you are not using it, you can keep it in the space provided at the bottom of the mouse. Switch over to this cool 2.4 GHz wireless mouse and enjoy the freedom and comfort of wireless control. It includes two energizer AAA alkaline batteries.