The Microsoft 850 wireless desktop keyboard and mouse provides reliable mouse and keyboard control with a range of up to 5 metres. The tiny transceiver conveniently snaps into the bottom of the mouse when it’s time to pack up and go. Setting up the keyboard and mouse is simple—just insert the batteries, plug in the tiny transceiver, and start typing! This keyboard also has Advanced Encryption Standard (AES), which is designed to help protect your information by encrypting your keystrokes.