Great value in a sleek desktop This desktop set combines a spill-resistant keyboard & optical mouse to deliver all the features you need more Microsoft quality & reliability Enjoy plug-&-play setup Windows Vista integration Quiet Touch keys with quick access to media controls & calculator & a comfortable ambidextrous mouse KEYBOARD Style Business Interface USB (Universal Serial Bus) Number of Keys 109 Multimedia Keys Yes Key Type Quiet-touch keys Material NA Colour Black Backlit No MOUSE Size Type Full Size Ergonomics Ambidextrous Interface USB (Universal Serial Bus) Buttons 3 Scroll Wheel Yes DPI 800 Tracking Optical Colour Black GENERAL Additional Features Plug & play Spillproof Windows start button