The Wireless Keyboard and Mouse 850 Desktop gives you wireless freedom at an affordable price. Enjoy the freedom and convenient of wireless technology. Confidentry 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. Reliable wireless connection: Enjoy the 2.4-gigahertz (GHz) wireless technology which delivers a reliable connection with up to a 15-foot range, with virtually no interference. Advanes Encryption Standard (AES) 128-Bit Encryption:This keyboard features Advanced Encryption Standard (AES) technology which is designed to help protect your keystrokes. Each keyboard is permanently paired with its receiver at the factory-no key information is ever shared over the air. Windows Shortcut Keys:Quickly access frequently used tools, like the calculator zoom and audio control by using shortcut keys.Designed for comfort-in either hand:Superior comfort that is designed to fit your right or left hand. Microsoft optical technology: Precise optical tracking technology provides high responsive cursor control. Snap-in transceiver: Plug the wireless receiver into your computer's USB port when you are ready to work. Then snap it into the bottom of your mouse when you travel and the mouse will automatically turn off.Battery life indicator: Avoid getting caught with a dead battery. The battery indicator glows red when the battery is running low.Scroll wheel :Move through documents and webpagesture quickly. Power switch :Turn off your mouse to extend battery life. Windows start screen key:Simply press the window start screen key to view your apps and start screen. Longer battery life :Experience fewer interruption with up to 15 months of battery life for your keyboard.