FeaturesUp to 2 years battery lifeAdvanced Encryption Standard (AES) 128-bit encryptionQuiet-touch keysFull-size mouse provides comfortable, precise navigationRequired operating systems: Windows 10/8/7 or Mac OS X v10.4-10.7This sleek Microsoft 900 Wireless Keyboard & Mouse Set 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 keystrokes. Both the keyboard and the mouse have an average battery life of 2-years and provide easy access to commonly used Windows features to keep you productive and efficient. Advanced Encryption Standard (AES) 128-Bit EncryptionThis keyboard features Advanced Encryption Standard technology, which is designed to help protect your information by encrypting your keystrokes. Each keyboard is permanently paired with its receiver at the factory—no key information is ever shared over the air.Quiet-touch keysQuiet-touch keys provide comfortable, responsive typing.Easy, reliable plug-and-play transceiverTransceiver lets you set up in seconds and offers a reliable connection with a wireless range of up to 30-feet.Easy-Access Hot KeysQuickly access frequently used tools, like the calculator and audio controls by using shortcut keys.Full-size mouseLarger mouse size is designed for greater comfort and more precise navigation.2-year average battery lifeLow power consumption provides 2-year average battery life for both the keyboard and mouse based on normal usageAmbidextrous mouse designMouse is designed to fit comfortably in your right or left hand.Customizable buttonsCustomizable buttons give you access to the Windows features you use most.Dimensions for KeyboardLength: 16.77\" / 425.9mmWidth: 6.09\" / 154.6mmDimensions for mouseLength: 4.46\" / 113.3mmWidth: 2.49\" / 63.12mm