Is there any data stored on Airpods? Do you need to do anything before giving them to someone else aside from a reset and unpair?

Is there any data stored on Airpods? Do you need to do anything before giving them to someone else aside from a reset and unpair?

Curious if there is any sensitive data stored on Airpods that I'd need to worry about before giving them to someone else.

If so, how do you delete/overwrite this?