I am a midwife and I need it for prenatal care! I can so often hear the heart sounds from the 10 weeks of gestation. Sometimes they do not appear (which is due to a stronger maternal heart rate) but they are clearly audible! For women with "bad" previous experience or those until the next pension which is the 4 weeks a little too long, a good alternative! However, skeptical to consider, as you sometimes might not find anything which does not automatically constitute a negative result!
