Initially, there is still uncertainty as to whether you can hear the right side :-) digestive sounds and tones that sound must seek with patience the Baby Luv by waves. Care must be constantly up the volume knob and turn to get no hearing impairment. Because that squeaks when searching on your stomach is very noisy when the tone control is not adjusted. On the other hand you want the hearts of new creatures anyway perceive loud and clear and provides the controller to super loud :-) All in all, an excellent product, if there is too much fear, because the actual fetal movements are not clearly perceptible in the abdomen. We have the equipment used from the 17th week
