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 mouse PRECISION 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 applications LONG 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 months SIMPLE SETUP - Simply plug the Logitech Unifying receiver into your computer and you're ready to work-nothing else is needed ENCRYPTED 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 secure System Requirements: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10,USB port,Internet connection (for software download),Chrome OS The Logitech MK520 Wireless Keyboard and Mouse Combo provides the functionality of a full-size keyboard with a stylish and streamlined design. The combo includes a Logitech K520 wireless keyboard and an M310 wireless mouse. It’s perfect for both the home and office. The included M310 wireless mouse is full-size and works well in either hand. It was precision-engineered to feel great even after hours of use. Tired of short battery life and continually having to charge your devices? The MK520 combo has a seriously long battery life. The K520 wireless keyboard lasts for up to 3 years and the M310 wireless mouse for 18 months between battery charges, using smart battery power management. Easily connect to your computer using the included Logitech Unifying receiver. Plug it into your computer and you’re ready to work without any lengthy installation processes. Have all the functionality of wireless connectivity without putting your information at risk. The MK520 uses 128-bit AES encryption and a 2.4GHz signal to keep your information safe.