I’ve never written a review before, but I just had to for this because it was so awesome! I’ve had 3 ultrasounds already and no one at my doctor’s office has let me hear my baby’s heartbeat. I was so discouraged, I decided to buy this based on the reviews and great price. I had no idea it would be so easy and quick to find the heartbeat! I’m just about 15 weeks and it only took me maybe 15 seconds to find it once I read the instructions. it works great! I used belly butter for mine so it would be beneficial and not just goopy and messy. Definitely a must have for any expecting mom!