The full size layout and whisper quie keys of the Logitech Wireless Combo MK520 allow you to type comfortably, the concave keys position your fingers properly, and their softly rounded edges invite your fingertips to glide from key to key, hour after hour. One-touch media controls on your keyboard let you mute your computer or skip to the next song instantly without using your mouse. Together with the contoured sides and soft rubber grips of the laser mouse your hands are comfortable, supported, and in control. You’ll enjoy smooth, precise tracking on virtually any surface (not including glass or mirrors). With a battery life of up to three years for the keyboard and one year for the mouse the need to replace batteries is practically eliminated. The tiny 2.4Ghz wireless receiver stays in your laptop, there’s no need to unplug it when you move around and connects both the keyboard and mouse. The long-range wireless connection virtually eliminates delays, dropouts, and interference. The adjustabl tilt legs alow you to increase the keyboard tilt to 8 degrees to address your personal ergonomic needs and for easy keyboard storage you can store the keyboard standing up to free up desk space when you aren't using it.