Type on a familiar keyboard! Full-size arrow keys: number pad: 6-pack keys and easy access to 15 Fn-keys. Go longer between battery changes with 36-month keyboard and 12-month mouse battery life. Simple set up -- just plug the tiny wireless receiver into USB port. No hassle with pairing or software installation. Wireless you can depend on -- Logitech Advanced 2.4GHz wireless technology that works even 10 meters / 33 feet away.