The Microsoft PN9-00001 Wireless Desktop 850 Business Keyboard & Mouse is the perfect accessory for any professional setup. Featuring 2.4 GHz RF Wireless Technology with a 15' range and 128-Bit AES Encryption for added security, it's ideal for work. Enjoy seamless typing and precision mouse tracking with Microsoft Optical Technology. Enjoy convenience and reliability with the Wireless Keyboard and Wireless Ambidextrous Mouse in any setting.