The heart is the most important part of the human body, so it is especially important to cultivate the child's perception of the heart from an early age. This high quality plastic stethoscope, in addition to being a toy accident, can indeed hear your heart rate. Not only can you develop your child's interest, but you can also improve your child's ability to think. In addition, this stethoscope can be widely used in scientific knowledge and product trade fairs. Welcome to customize your exclusive logo. 29.5" L.