This listing is for a genuine Microsoft Windows 7 Professional OEM software package. It includes two DVDs: one for the 32-bit version and one for the 64-bit version, both with Service Pack 1 integrated. This software is intended for distribution with a new or refurbished PC, as indicated by the OEM license. A Certificate of Authenticity (COA) is included, which contains the product key. This is a full operating system designed to provide a stable and professional computing experience. Ideal for system builders or those looking to reinstall Windows 7 Professional on a compatible PC.