The product is a new, sealed Microsoft Windows 7 Professional 64-bit DVD with product key. This operating system is designed for use with a minimum of 2 GB of RAM and 20 GB of hard drive space. It is compatible with Microsoft Windows 7 and Vista operating systems, and comes in English language format. The DVD includes the Windows 7 Home Premium model and is valid for use on one device. Made by Microsoft in the United States, this operating system is a reliable choice for those looking to upgrade or replace their current system.