The wireless Asten and nine F-keys are comfortable, practical and dvanced 2.4 GHz technology from Logitech provides a fast, reliable connection up to m distance for a fast, reliable connection with virtually no delays or dropouts. Wherever you go with your computer - the compact mouse comes with you. Work for months without without changing batteries. The on/off switch helps... save power. Everywhere work and play. The wireless connection remains virtually free from delays, dropouts or interference and gives you up to 10 m of range. Take the mouse with you. When your computer travels, this comfortable this comfortable mouse in your notebook or jacket pocket. with you. The 36-month battery life for the keyboard and 12-month battery life for the mouse 12 months for the mouse, as well as the practical on/off switch. on/off switch, you can spare yourself the hassle of changing batteries for months. One press of a button and and you have immediate access to media control: films, music, Internet, e-mail, play/pause, volume, etc. The full-size keyboard with numeric keypad, arrow keys