The price of the Lippincott and the Mendelssohn is more expensive, and the Mendelssohn is a passive device that can only be used in the middle and late stages of pregnancy.
The title of this brand is focused on pregnancy products, you can rest assured to buy. Personally, I feel that the overall consideration is still good, this product is the same as the LiBang, baby heart language, 9 weeks can be measured. The first thing you need to do is to get a good understanding of what you're doing and how you're doing it.
Relatively speaking, Gogo pregnancy is more recommended!