Enjoy stylish, compact comfort and reliable wireless freedom at your fingertips. Curve it comfortably for use. Then smoothly glide your finger up or down the scroll pad to navigate through a page and the Microsoft Arc Touch Mouse responds precisely to the speed of your movement. Use it just about anywhere, even on a rough wood surface or your living room carpet, relying on Microsoft BlueTrack Technology. While giving a presentation or surfing the Internet, roam 30 feet away and retain reliable wireless control of your computer. When you pack up and go, you`ll travel in style. Keep the tiny transceiver plugged into your computer`s USB port, or tuck it into the underside of the mouse. Flatten the Arc Touch Mouse to turn it off, and slip it into your pocket or bag as easily as a cell phone.BlueTrack Technology does not work on clear glass or mirrored surfaces.Flexible DesignCurve for comfort, flatten to pack. A perfect fit for your hand and your mobile lifestyle.Power On and OffCurve to turn on. Flatten to turn off. No button to switch. A green light flashes to show the battery is working, and then turns off to save battery life.Touch to ScrollClick. Tap. Flick. Control. Quickly brush up or down with your finger to flick into hyperfast vertical scrolling for smooth, intuitive navigation. Scroll slowly with a gentle swipe or quickly with a flick of the finger, then tap to stop.BlueTrack Technology