Enjoy the freedom and convenience of wireless technology. Confidently roam up to 15 feet away from your PC while maintaining a strong wireless connection. Or,take the mouse separately to use with a laptop while traveling - 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,which is designed to help protect your information by encrypting your keystrokes.