The Project Nursery Baby Monitor System has a 4.3" video monitor and includes 2 digital zoom cameras. It has a range of up to 800 feet with clear line of sight--I imagine that means it is less than that through walls. It has preloaded sounds and lullabies, including Mozart, Brahms' Lullaby, Twinkle Twinkle, waves and white noise. The cameras have infrared night vision and the audio is two-way, so you can hear the baby and, when you want, the baby can hear you, or you can communicate with the adult that's in the room with the baby. The box includes all instructions and cables.