Good image/sound. The battery in the monitor used to last for about 4.5 hours when new. I bought it in 2015. Now (2019) we are waiting for the second baby so I replaced (I had to disassemble it and assemble it again) the batteries and is like new (ready to use). We used it everywhere we went and had no problems with the signal (good range). It's a good quality device and well designed.