In Windows, you can set to add a watermark on the bottom right corner of the desktop that displays the currently installed Windows edition, build, and version for easy reference.
This tutorial will show you how to add or remove the Windows build and version watermark on the desktop for your account or all users in Windows 7, Windows 8, and Windows 10.
Read more: Customization - How to Add or Remove Windows Build and Version Watermark on Desktop | Windows Questions