1.Microsoft Wireless Optical Desktop 3000 offers a complete desktop solution. Rest your hands easily on the sleek, responsive Comfort Curve keyboard, and use the Media and Hot Keys for one-touch access to the commands and programs you use most. 2.Scroll side-to-side - Scroll four ways for greater efficiency and comfort with 4-Way Scrolling. 3.Use on nearly any surface - Navigate with better speed, accuracy, and reliabilitythe optical sensor tracks movement on nearly any surface without the hassle of clogged mouse parts. 4.Enjoy fast access to your media - With the touch of a button, you can easily access your favorite music, video clips, and media programs. 5.Work in greater comfort - The stylish, curved design of this ergonomic keyboard helps your hands and wrists rest more naturally for greater comfort.6.Comfortable in either hand.