I would market it as a security camera.

Just “camera” implies I might take this to the colosseum or to take family photos.

But without a view finder and with deleting old photos I don’t think that is the use case.

It is super niche though. Most security cam buyers would at least want cellular or wifi to capture the images “so far” before the thief steals the cam itself.

So this is for situations where small is the main thing, I suppose almost for spying.