MK850 Performance Wireless Keyboard and Mouse Combo, 2.4 GHz Frequency/33 ft Wireless Range, BlackProvides a better way to type and manipulate your mouse with a cushioned palm rest, a wrist pad, contoured mouse and curved keyframe that encourages the proper hand positioning. Adjustable legs allow you to alter the typing angle based on your comfort level. Switch among three different connected devices thanks to the Logitech Unifying USB receiver or with Bluetooth technology, while both the mouse and keyboard sync together with customizable