Usually at 12 weeks of pregnancy, moms-to-be can use the fetal heart rate monitor to hear the fetal heart rate monitor to hear the fetal heart beat. At 16 weeks of pregnancy, fetal heart beat could be heard out clearly for the moms-to-be and dads-to-be. This 160 heart rate baby gender fetal heart monitor precisely detect the fetal heart rate.
So if you wants to listen to a clear fetal heart beat and detect the fetal heart rate, please start fetal heart beat monitoring at 16 weeks of pregnancy. If you want to listen to your baby's heart rate early, you may start early at 12 weeks