Equipped with a USB transceiver and utilizing 2.4 GHz wireless technology, the Wireless Desktop 850 from Microsoft is a wireless keyboard and mouse combo that allows users to move up to 15' away from their PC and still maintain a wireless connection. Its other features include Windows shortcut keys, a Windows start screen key, an ambidextrous design, Microsoft optical technology, Advanced Encryption Standard (AES) 128-Bit encryption, and a battery life indicator. Additionally, the mouse features a scroll wheel and a power switch.
The Wireless Desktop 850 is compatible with Windows 10, 8, and 7, as well as Mac OS X 10.4 - 10.7. It requires 150MB hard drive space for software downloads and updates, and includes 2 x AAA alkaline batteries, 1 x AA alkaline battery, and is protected by a limited 3-year warranty.