Enjoy wireless freedom with this wireless keyboard combo The WS770 uses 2.4GHz wireless technology to deliver a solution that is as reliable as using a cord with virtually no delays or dropouts. The receiver is so tiny you can plug it in once and forget about it. The combo also features a mouse. Furthermore both the keyboard and mouse are fitted with auto-sleep on/off functions that saves you battery life. The keyboard with its stylish and ergonomic design has the enhanced multimedia keys to allow you to open documents reply to e-mails and control the multimedia programs on your PC all at the touch of a button with the enhanced multimedia keys.The mouse has been ergonomically designed to be used in either the left or the right hand along with the 3D scroll wheel function making it easy to use when using your favourite program. The nano wireless receiver is the Plug and Play technology so there is no need to constantly remove the adapter if it is used on a notebook computer.