Connect with ease - You pop the tiny Logitech Unifying receiver in your notebook and leave it there | You can even add more devices.. Plug it.. Forget it.. Add to it | Do more, Faster! - With eight hot keys for instant access to music, e-mail and more | With intelligent power management, you can go years without replacing the batteries | Logitech Unifying receiver - The tiny wireless receiver stays in your laptop, there's no need to unplug it when you move around-and connects your keyboard | Advanced 2.4 GHz wireless - So you can work or play in more places-like your comfy couch-the wireless connection virtually eliminates delays, dropouts and interference and gives you range of up to 10 meters (33 feet) | 24-month battery life - You'll enjoy less hassle with a battery life of up to 24 months, Auto standby helps you save energy | Eight hot keys - The things you do most are right at your fingertips with eight hot keys for instant access to the Internet, e-mail, play/pause, volume and more | 3-year Limited hardware warranty