Advanced Encryption Standard (AES) 128 bit encryptionQuiet-touch keysEasy reliable plug-and-play transceiverEasy-access hot keys 2 year average battery lifeSystem requirements - requires a PC that meets the requirements for and has installed one of these operating systems Windows 10 8 7; Mac OS X v104 107Item is UK layoutMicrosoft Wireless Desktop 900 Keyboard and Mouse - BlackThis sleek desktop is contemporary and minimalistic It has quiet-touch keys for a serene typing experience and a full-size mouse that provides comfortable precise navigation The Wireless Desktop 900 also includes Advanced Encryption Standard (AES) which is designed to help protect your information by encrypting your keystrokesBox Contains1 x Wireless desktop 900 (keyboard and mouse)2 x AAA batteriesand 2 x AA alkaline batteries