The Innovera Hyper-Scrolling wireless mouse lets you quickly and accurately scroll through documents and web pages with the simple flick of a finger. Scroll lock button for precision scrolling. Works accurately on most any desktop surface. The ergonomic design and rubber surfaces ensure all day comfort and productivity. The 2.4 GHz plug-and-play dongle conveniently stores in the base of the mouse. Easy to reach forward and back buttons for easier document or web browsing. Includes two AAA batteries.