Microsoft Wireless Desktop 850 Keyboard and Mouse - Black Enjoy the 2.4 GHz wireless technology which delivers a reliable connection with up to a 15 foot range Advanced Encryption Standard (AES) 128 bit encryption Quickly access frequently used tools, like the calculator, zoom and audio controls by using shortcut keys High level comfort that's designed to fit your right or left hand Precise optical tracking technology provides quickly responsive cursor control Snap-in transceiver stows conveniently in the bottom of the mouse
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