I bought 2 of these a month ago and non stop used it to keep an eye on my new puppy. The image quality both in the day time and using night vision are impeccable, even over the wifi. The speaker can go really loud so when talking to the pet its nice and clear, and at the same the mic is nice and sensitive and clear, I talk in the living room 2 rooms away and it picks it up nice and clear. With the small build and easy install ... I'd buy more. The only single down side to these is there isn't any internal memory, SD card is optional but required to save recorded data.