This desktop set combines a spill-resistant keyboard and optical mouse to deliver all the features you need-and more-with Microsoft quality and reliability. Enjoy plug-and-play setup, Windows Vista integration, Quiet Touch keys with quick access to media controls and calculator, and a comfortable ambidextrous mouse. **Mouse Features:** - Windows Start Button: Press to launch your Start menu and search your PC or the Web if you have Windows Vista installed - Plug and Play: No software needed. Just connect the keyboard to your PC and go! - Comfort for Either Hand: Use your mouse with your left or right hand--ambidextrous design makes it comfortable either way - Optical Technology: Navigate with better speed, accuracy and reliability--the optical sensor tracks movement on nearly any surface without the hassle of clogged mouse parts - Scroll Wheel: Move through your documents quickly without having to click on the on-screen scroll bar **Keyboard Features:** - Media Center: Four hot keys let you control the most-used media activities (play/pause, volume up, volume down, and mute) - Quiet-touch Keys: Quiet, responsive, thin-profile keys - Calculator Hot Key: With the touch of the button, you can quickly access the Calculator - Spill-Resistant Design: Enjoy a drink while you work--this keyboard is designed to withstand an accidental spill - Warranty: 3-Year Limited Hardware Warranty