Microsoft Wireless Desktop 850 - USB 2.0 Wireless RF - 104 Key - English (North America) - USB 2.0 Wireless RF - Optical - 1000 dpi - 3 Button - Scroll Wheel - Symmetrical - AA, AAA - Compatible with Computer, Notebook

Using featured scrolling wheel you can control text size, image zoom or open or close tabs in a swift Using RF wireless connectivity you can control devices and play games from a far distance Features optical 1000 dpi resolution for silky prominent movement