We're expecting our second child soon, and we wanted to update our monitor, as our current one is only a single camera, and the parent unit's battery life is maybe 3 hours. Not a huge issue, but it's usually beeping to be plugged in by the end of naps, and well before heading to bed.I looked around at a number of monitors, but nothing really seemed right, or had enough bad reviews to make me wary of them. So in the end I decided to go with two security cameras, coupled with these audio only monitors. This way we have instant feedback from the audio monitors, and can check the cameras if needed.First thing I noticed was the size/design, both the parent unit and the baby units are nice and small, and have a nice rounded asthetic which I like a lot. Included are cables and outlet adapters for all of the units, which I was actually really surprised and happy to see, as so often these days companies don't provide the outlet adapters, leaving you to use ones from other devices or buy them separately. The units come paired already, so literally all you need to do is charge them up (manual instructs you to charge them before use, regardless of plugging them in) and then turn them on.When they detect sound, it sort of "turns on" and plays all sound for the next 10-15 seconds or so, before reducing the sound again. What I mean by this, is if you have an ambient sound machine in the room to help your child sleep, you wont constantly hear it over the monitor. The monitor will "activate" when a new/louder sound like crying occurs, and then you'll hear everything for a short time, including that ambient noise machine, before "deactivating" if it doesn't hear any more crying. I should note that the sound quality is great, very clear, which I think is a benefit of having a device that does one thing rather than two.The parent unit has two indicators on it's screen for each monitor, you can set a name for each one and when sound is detected they flash to indicate which one it is. Each monitor also has the room temp on there, which is handy because we had to put a separate thermometer in our first's room, which wasn't easy to check and often ran out of batteries. You're able to speak into the parent unit, but the one time I used that feature with our old monitor, it scared our first, so... wont be doing that again, but I know it can be helpful for some kids.Overall I'm a big fan of these monitors, once our second arrives it'll be great to keep tabs on both of them with one unit.