Do. Not. Buy. – Flutter | Baby Heartbeat Monitor - Doppler Baby's Fetal Heart Beats in Pregnancy Free Obstetric Stethoscope or Ultrasound when Pregnant Review

Does not actually work. Contains pre recorded noises of heartbeats. Hold it to your couch. These companies are making a fast buck off of worried pregnant women.
Review by MiladyOfScott on Flutter | Baby Heartbeat Monitor - Doppler Baby's Fetal Heart Beats in Pregnancy Free Obstetric Stethoscope or Ultrasound when Pregnant.