This is a premium quality Microsoft Windows 7 Home operating system that comes with a key, OEM system builder pack, and SP1. It is compatible with 64-bit systems and has a minimum RAM of 1 GB. The operating system is in English language and has a model number of Windows 7. It is a standard license category and has a minimum hard drive space of 1 GB. The item length is 6 inches and the item height is 8 inches. The operating system is made in the United States and has a number of devices of 1.