The Logitech MK250 desk set includes a full wireless keyboard & mouse giving you freedom to work or play away from the desk. The flat keyboard creates a natural typing feel that keeps you relaxed hour after hour while the contoured mouse is designed to fit comfortably in your hand. The MK250 desk set is easy to set up with its plug and play feature that allows you simply plug in the mini-receiver into your computer and start using your keyboard and mouse right away. Batteries are included.