This monitor does not work and I cannot hear a heart rate.

Doesn’t work. Waste of money

Let me preface this with: 1) I may have received a faulty unit and 2) I work in the medical field. I can only get this thing to work once every 10 times I use it. It's pretty much all static no matter how much Aquasonic I use. I am well far enough along to be able to easily find the heartbeat so it's stressful when this unit doesn't work. I am returning it because it's caused more stress than peace...