So we bought Angel sound with the appropriate ultrasound. The handling of the device is very simple. Easy gel to the abdomen and insert Angel Sound. How man heard the baby all depends on whether and how noise present (Verdaung etc.) The best use morgends. Something must also have patience until man found the Babay. There is also the possibility to connect the device to your PC and take the heart sounds with the audio recorder. A suitable cable is, but it's something kurz.Aber this cable can be from specialist retailers. So we find that it is very reassuring when you can from time to time to hear the heart sounds. And we find it is something special when you can later play for the heart sounds. Had made smart in www and not actually found negative for ultrasound (my opinion) So much fun Angelsounds ORIGINAL SET with Ultrasound