Microsoft Windows 7 Professional 64bit DVD and Product Key Sealed Packed UK is an Operating System that comes with a License and Media. It is compatible with Microsoft Windows 7 64-bit Operating Systems and requires a minimum of 2 GB RAM, 1 GHz Processor Speed and 20 GB Hard Drive Space. This Unit includes a DVD format with a Language option of English and a Product Key to activate the Operating System. The Country/Region of Manufacture is Ireland with only 1 Device allowed per Unit Quantity. If you are looking for an Operating System that is reliable and easy to use, Microsoft Windows 7 Professional 64bit is a great choice.