Microsoft Wired Desktop 600 K&M USB Black Mouse & Keyboard Combo - Spill Resistant, Retail Pack Great value in a sleek desktop 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, Quiet Touch keys with quick access to media controls and calculator, and a comfortable ambidextrous mouse. 1Media centerFour hot keys let you control the most-used media activities (play/pause, volume up, volume down, and mute). 2Quiet-touch keysAppreciate a keyboard with quiet, responsive, thin-profile keys. 3Calculator hot keyWith the touch of the button, you can quickly access the Calculator. 4Spill resistantEnjoy a beverage while you work. This keyboard is designed to withstand an accidental spill. 5Windows start screen keySimply press the Windows start screen key to view your apps and start screen. 6Plug and playNo software needed. Just connect the keyboard to your PC and go! 7ComfortExperience comfortable use in your right or left hand. 8Optical technologyEnjoy high-performance optical technology. The 800-dots-per-inch (DPI) optical sensor delivers greater accuracy and control. 9Scroll wheelMove through documents and webpages quickly.