Omg!!!! I got mine delivered today and immediately took it out the box and put it to use. Me and my four year old daughter tried it out first. It took us a few minutes to find the heartbeats (we’re having twins), but it was literally a few minutes. She loved it and so did I. I ordered this device because I worry sometimes when I don’t feel them move over a course of the day. So this should ease my mind a lot.