The seven-button Wizard Wireless Mouse With Coating includes a built-in USB receiver that makes it compatible with all major operating systems. Simply plug in the USB receiver and the mouse is ready to use. No set-up needed. The mouse features three adjustable DPI levels (800, 1200, & 1600). The ergonomic design of the mouse makes it easy to be used throughout your day. One AA Battery is included. Premium giftbox is included as the standard packaging option. This product contains a preservative applied as a coating only to protect the product. Antimicrobial properties are built in to inhibit the growth of bacteria that may damage this item. The antimicrobial properties do not protect users or others against bacteria, viruses, germs, or other disease organisms.