Sound Amplifier, High Sensitivity Audio Ear Listening Device Amplifier Enhanced Microphone for Pipe Side Leakage, Floor Heating Detection

my neighbor said they fixed their problem with it satisfied with the product.

I’m sorry this is going to trash. It doesn’t work. Or maybe the person I bought it for doesn’t need to know what’s going on in next room. It doesn’t work.

I don't know if I received a bad device or not, but the one I received did NOT work at all. I fully charged it, and I even tried it with multiple headphones. This is really the just a toy for children to use their imagination. Got it today and returning it today!

This does not work. It only squeals and crackles the the headphones.

Works great and very sensitive. I devised a way to mount the Serounder devise on the wall so I don't have to hold it in place which causes a lot of extra noise if you move it slightly. I used a 2" hole cutter in a flat, thin piece of wood which I can tape in place on the wall. The Serounder slides into the hole exactly and a couple more pieces of tape keep it in place. I only have to turn it on and I'm set to listen. I'm tracking mice getting into an outside wall and this device is just what I was looking for.