The quality of the image and audio are quite reasonable. The night vision was quite good also. But where this was really let down is in two ways - 1) The time it takes for the notification to come up, click on the notification then it opens the app and loads .. the person leaving a package has come and gone. Also when it said someone was at my front door to load from that notification to the app and it loads a different view than when someone presses the doorbell and oh my gosh it took way too long. 2) It just wasn't reliable enough. Some times the motion would have to be walked past 5 times before it would be picked up and other times it was quick. But also some times it would just circle for 20 seconds trying to load. Which really is why you buy it, to get a view of the door.
Please note the above reliability issues had nothing to do with wireless range or wifi vs mobile data as we did loads of testing and it would differ 7 minutes later.
I was really disappointed in the product. I expected such a big brand to have a better product. Sorry to say, do it recommend, am returning this and getting something else.