How about Bao Yun prenatal education instrument? Is Bao Yun prenatal education machine useful?

An Yunbao is very good. I started using their products after two months of pregnancy. At first, I just listened to music. As the baby grows up day by day, there are more and more prenatal care products, but they all use a brand of Anyunbao. Needless to say, the product is very good, which is very helpful for prenatal care of babies.