Improve your scrolling experience and work comfortably with this Logitech wireless keyboard and optical mouse. Increase productivity by controlling audio or video using special keys on this wireless combo. The four-year battery life for the keyboard and 18-month battery life for the mouse means working with the devices longer before replacing the batteries. For a better scrolling experience, the mouse has a wide wheel, and the keyboard lets you adjust its height, making it more comfortable while typing. The spill-resistant design prevents damage from liquids. Working with the mouse is comfortable to the wrist, thanks to the contoured grip. Equipped with advanced 2.4 GHz wireless connectivity, this Logitech keyboard and mouse delivers the speed and reliability of a corded connection.