Product Description Low-Profile Wireless Keyboard and BlueTrack Mouse Desktop Set - USB From the Manufacturer Microsoft Wireless Desktop 3000 Low-profile keyboard Stylish, Modern Keyboard and a Comfortable Mouse That Works on Virtually Any Surface Work more places with style and performance. This advanced desktop combines an eye-catching keyboard and a BlueTrack Technology™ mouse that works in more places than either optical or laser mice. The compact keyboard design and a mini-transceiver that snaps into the bottom of the mouse make it easy to be productive on the go. BlueTrack Technology™ Digital Media AccessMedia Center - Control media playback from your keyboard.Hot Keys - One-touch access to Windows® Media Player, e-mail, Home, calculator, My Documents, Zoom, instant messaging, and photos."My Favorites" Keys - Customize these 5 keys to instantly bring up the photos, folders, files, and Web pages you use most. Simply push and hold to set.Enhanced F Keys - Perform common commands from your keyboard.Spill-Resistant, Quiet Touch KeysIntegrated water channels drain the liquid away.Quiet, responsive, thin-profile keys. BlueTrack Technology™ Works on Virtually Any Surface Works more places than ever before, including on granite countertops, living room carpet, and rough wood tables.Reliable 2.4 GHz Wireless - Up to a 30-foot range and less clutter on your desktop.Snap-in Mini-Transceiver - Stows conveniently under the mouse; automatically turns the mouse on and off for up to 12 months of battery life.Tilt Wheel and More - Fully featured mouse with 5 programmable buttons, rubber side grips, and Magnifier. What is BlueTrack? Microsoft’s proprietary BlueTrack Technology™ works on more surfaces than both optical and laser mice. It uses high-angle imaging optics to generate an accurate picture of the surface.Now track more accurately on: Granite Carpet Wood Windows® 7, Windows Vista®, Windows XP (excluding Windows XP 64-bit)Mac OS X 10.4-10.7100 MB30 MB4 AA alkaline batteries (included)You must accept License Terms for software download.Internet access may be required for certain features. Local and/or long distance telephone toll charges may apply.Software download required for full functionality of all features.