FULL-SIZE FUNCTIONALITY - Have the functionality of a full-size keyboard without sacrificing form or function. The MK520 includes a stylish and streamlined keyboard and ambidextrous mousePRECISION MOUSE WORKS IN EITHER HAND - The M310 wireless mouse features soft rubber grips and can be used in either hand. It provides the precision needed for fine applicationsLONG BATTERY LIFE - Tired of short battery life? The MK520 package boasts significant battery run time. Using 3 regular batteries, the keyboard will last for up to 3 years, and the mouse for up to 18 monthsSIMPLE SETUP - Simply plug the Logitech Unifying receiver into your computer and you're ready to work-nothing else is neededENCRYPTED CONNECTION - Enjoy the flexibility of working wirelessly with an encrypted connection. The MK520 utilizes 128-bit AES encryption and a 2.4GHz signal to keep your connection fast and secureSystem Requirements: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10,USB port,Internet connection (for software download),Chrome OS