This is awesome if you know what's good for you because if you have ever had to save lots of pictures and been able to go back and look at them, you can appreciate how this all works.
It's no wonder that everyone will appreciate being able to hear the heart beat many years from now. Think of how amazing it would be to be able to hear the heart beat of when you were just a child.
When you do finally realize you need a baby heartbeat monitor it can be a very rewarding experience.