This product contains a retail license. A retail license may be installed on new and used computers. Since it is a retail license you're able to transfer the license from your old computer to your new computer. You're able to transfer the license whenever you purchase a new computer or laptop. The license may be installed on 1 computer. To transfer the license you'll have to remove the license from your old computer before you are able to install it on your new computer.
Windows 10 summarized:
Includes:
Delivery Terms for Physical items DVD/USB/SSD/HDD etc:
UK TRACKED DELIVERY
WORLDWIDE TRACKED DELIVERY