How to check if a Smart TV was used and then factory reset?

Hello guys, I have a smart Android TV which is claimed to be brand new but I have my reasons to suspect that it was used for a short time and then factory reset. Is there any relatively simple way to check if it’s the case?
I am not an expert, obviously I don’t have any forensic equipment and not going to go anywhere near that far anyway. I am not interested in what might be still stored on this TV in the slightest, all I need is a simple not really intrusive way to check if it is indeed brand new or it was used even if just shortly.