[Simple setup]: It's easy to started, just plug the receiver into a USB port and crunching numbers right . No drivers required. are easy and silent to press, greatly your productivity [Quiet soft Contact]: integrated ergonomic tilt provides added comfort which helps reduce strain, great for those working on spreadsheets, accounting files or financial applications.[ADVANCED 2.4 GHz WIRELESS]: You'll enjoy the reliability of a cord plus cordless and freedomfast data transmission, virtually no delays or dropouts. Allows the keypad to function up to 33' from the receiver by establishing cordless workspace with standard USB interface[ Friendly]: Battery indicator light lets you know when the keypad's AAA battery is running low. Conveniently located direction control can be used as joystick control, allowing you to feel the thrill of playing game using a wireless device[Compatibility]: Works with PC and desktop computers that have Windows 2000 or XP or Vista or 7 or 8 or 10 operating , numeric keypad is not fully compatible with system. (Function do not work, while Number part works fine. Because doesn't support external keyboards with function )colour:blackMaterial:plasticsize:14x8.6x2cmPackage Contents:1 x wireless keyboard1 x receiverOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.