The stylish Toshiba PA3844U-1ETB Nano Wireless Optical Mouse gives you precise cursor movement and accuracy without the wires. This mouse features a tiny nano receiver, convenient scroll wheel and programmable buttons in an updated design that offers comfort for extended use. It also includes a low battery indicator to prevent those unpleasant surprises should the battery need replacement. The Toshiba Nano Wireless Optical Mouse sets a standard for comfort and dependability and is great for both home and business users for amazing performance. Experience dependable accuracy with smooth cursor action by using the1600 DPI resolution or slow down the action and select 1200 DPI. The Nano receiver is small enough to be left in the USB port and uses wireless RF technology to connect to your computer. For added convenience, the Nano receiver can also be stored inside the mouse when not in use. Work comfortably all day whether you're right-handed or left-handed with the balanced and weighted design. Everything you need is included in the package (USB Nano Receiver & batteries) to give you an easy start.