I love love LOVE this doppler! After having a miscarriage and a chemical pregnancy within one year, having this doppler really gives me peace of mind with my current pregnancy. It’s so wonderful getting to hear my rainbow baby’s heartbeat and knowing my little one is safe. I love how easy it is to use! Just a dollop of the gel and I can usually hear the heartbeat within seconds. I love that you can use headphones or the speaker. This was the most reasonably priced doppler I found and I’m so glad I made the purchase!