This is a complete set of Microsoft Office Windows version 4.2 on floppy disks. It includes 20 disks and is compatible with Windows operating systems. The software is in English language and has an unlimited number of devices. It is a vintage set manufactured in the United States between 1983-1994. The disks come in a floppy 3.5" format and are in good condition. This set is perfect for collectors or anyone interested in vintage software.