AUDIO / VIDEO QUALITY

The eufy S120 is an 2K model so as expected image quality is quite inferior to that of the S330 (also also rarely goes over 250-300K/s but at a much lower resolution).

That being said the S120 is not the same as the S330 in where you'll place it and so for very small areas such image (and audio) quality should suffice, at least during the day.

Digital zoom (should be around 4X) is as expected not very good (luckily for this specific model that shouldn't matter much).

Again, at long distances image quality is bad at night (zoom included) but as already mentioned this isn't a model aimed for such use (and for a few meters away image quality should suffice).