Microsoft Office Office 2021 Pro Plus - 1PC B.ind Key to MS Account/ Transferrable Genuine Retail Key

Strictly for Windows OS
1 PC - Perpetual Use
Transferrable
Genuine Retail Key
Global Activation Supported
Instant Key Delivery via Email

Key aspects and their implications:
"1PC One Time Bind Key to MS Account": Genuine retail keys for Office 2021 are indeed designed to be redeemed at setup.office.com and linked permanently to your personal Microsoft account.
"Perpetual Use": This is accurate. A one-time purchase provides a perpetual (lifetime) license, not a subscription.
"Transferrable": Because the license is bound to your Microsoft account, you can transfer it to a different PC (after uninstalling it from the previous one). Microsoft permits transfers every 90 days (except in cases of hardware failure).
"Genuine Retail Key": This term is used in the description of legitimate products. However, the market is flooded with "grey market" keys (often volume licenses sold illicitly) that sellers may misrepresent as genuine retail keys.
"Global Activation Supported": Legitimate retail keys are typically global, though some regional restrictions can exist.
"Instant Key Delivery via Email": This is a common practice for digital license sales.