These listeners work well for the price. I use one from the basement when my little man is sleeping on the second floor of the house, so distance is pretty good. Compared to our old set (that died from being dropped to much) the sound is not nearly as clear, and you get a pretty good amount of static, but that doesn't stop you from hearing the kids.If you want to hear their breathing, this isn't the listener for you. In our house, we're only worried when the kid actually wakes up and starts to fuss, so these listeners work well.We bought some quality 950ma rechargeable batteries for ours. If you are using the listener without a plug-in nearby, it will eat through batteries rather quickly. The rechargeable batteries are a real money saver.If the price were higher, I probably would only give these a 3. But they are pretty low cost, so they earn a 4.