The Microsoft Wireless Mouse 1850 is a three-button wireless mouse with a scroll wheel for easy navigation of documents and web pages. It connects to your computer or tablet through a small transceiver which plugs into the USB port of your device. The transceiver can be stored inside the mouse when not in use. For convenience, it is powered by one included AA battery. The mouse is designed to be compact and can be used in your right or left hand. It's compatible with Mac and Windows operating systems.