I don't have this exact one but I have another digital MBP model (sorry I forget the exact model) that has two handheld pieces. I love ours! It plays music, doesn't interfere with any other devices, you can hear very clearly, and the LED light isn't too bright or distracting. Just don't get too close with two of the monitors because it'll make a very loud noise.
We love it too! Very clear especially when the room is dark. I love the zoom in feature. We don't have issues with batteries but we did move the charger so that its plugged in all night rather than using the battery otherwise it will barely last all night.
Re: Baby Monitor
I don't have this exact one but I have another digital MBP model (sorry I forget the exact model) that has two handheld pieces. I love ours! It plays music, doesn't interfere with any other devices, you can hear very clearly, and the LED light isn't too bright or distracting. Just don't get too close with two of the monitors because it'll make a very loud noise.