Note: You will receive 2 Keys:

Windows 10 Pro Professional Key Global *1
Microsoft Office 2019 Home & Business Key Global *1

Windows 10 Professional Key Global
Get the new and improved Windows when you upgrade to Windows 10. You'll soon discover that it is familiar to Windows users, but a more personalized experience that takes everything you already love about prior versions like Windows 7 and 8 to the next level. Your apps will work great in all modes, on all Windows enabled devices. Browse Microsoft Store and you'll find plenty of amazing devices that are designed to work perfectly with the latest version of Windows.

Microsoft Office 2019 Home & Business Key Global
The essentials to get it all done. Office Home and Student 2019 is for students and families who want classic Office apps including Word, Excel, and PowerPoint for Windows 10. A one-time purchase installed on 1 PC or Mac for use at home or school.

What is difference between Office Professional Plus 2019 and Office Home and Business 2019?
Includes the core applications, Word, Excel, and PowerPoint, and powerful email management with Outlook. This is the same as Home and Business. It includes core applications plus Outlook. The big difference is this one is available for volume licensing, making it perfect for large businesses.
The core difference between these two editions is that Outlook 2019 is included in Home & Business 2019 while it is not included in Home & Student 2019. Office 2019 Professional is only available for PCs that run Windows 10 whereas Home & Business 2019 and Home & Student 2019 are available for Windows 10 PCs and MACs.