Secured Wireless Connection: Enjoy the 2.4-gigahertz (GHz) wireless technology, which delivers a reliable connection with up to a 30 foot range, with virtually no interference.Easy Access Hot Keys: Quickly access frequently used tools, like the zoom and audio controls by using shortcut keys. Quickly access frequently used tools, like the calculator and audio controls by using shortcut keys.Microsoft Optical Technology: Benefit from responsive cursor control that takes advantage of 1,000-dots-per-inch (DPI) tracking.Snap-in Transceiver: Plug the wireless receiver into your computer's USB port when you're 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 status indicator glows red when the battery is running low.Designed for Comfort: Experience comfortable use in your right or left hand.Scroll Wheel: Move through documents and web pages quickly.Power Switch: Turn off your mouse to extend battery life.Longer Battery Life: Experience fewer interruptions with up to 15 months of battery life.Windows Start Button: Simply press the Windows start button to launch the start menu.