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Fetal movement is the phenomenon that shows fetus‘ growth in mother's womb, it is an important indicator of the baby's health. When the mothers have been pregnancy 6 or 7 months, they should go to the hospital for check-ups regularly. At the same time, the mothers can use this microphone to feel fetal movement anytime. The mothers can assess the health of the fetus by recording the fetal movement. This microphone can find the problem of fetal hypoxia or insufficient placental. What's more, It can reduce the mother's excessive tension
Huifei Bao, Leijing Zhou, Jin Ge, Danping Shen