kit that allows you to have fun and portability at hand - thanks to 11 access keys and portable mouse.you can instantly open pages amazon and msn 11 through the access keys that allow instant control and access to your favorite websites - and music and films you love.thanks to low profile, quiet keys will be writing instant messages, e-mails and everything else nice and easy.portable, comfortable mouse - thanks to the easy nano-receiveri you can take it anywhere you use your computer.system requirements:windows xp, windows vista or windows 7usb portwarranty information:three-year limited hardware warrantycontents:keyboardmouseusb receiverusb device range extender2 aa batteries (keyboard) and 1 aa battery (mouse) (installed)user documentation