Plain and simple
Did not work. Tried for 29 minutes. Im 35 weeks, using iPhone 4S with high quality headphones and couldnt even hear my own heartbeat when I tested this. My husband is deployed overseas and I wanted to send him our sons heartbeat as a surprise but all I heard was static. Truly disappointing. If like a refund.
Dont me dumb like me and give this a shot. Not worth your time or money.
Boobiemobster about
Fetal Heartbeat Monitor UnbornHeart - Microphone Baby Heart Rate Sound Stethoscope