I purchased this on Amazon. I wanted to see what my parakeet does when it sleeps, and I can view it linked to my smartphone (by installing an app). I could see even in the dark. I can also hear the sounds. However, I can only use it while charging, so I'm selling it because I wanted a wireless type. The Amazon website stated it was wireless. I'm not sure if I'm using it incorrectly. Includes the instruction manual, box, and the main unit.