The stethoscope design conforms to the patented ergonomic ear tube and ear sinus angle of the ear canal. It fits comfortably with the ear canal of the listener without making you feel tired and uncomfortable. Before putting on the ear tube, please pull the ear tube of the stethoscope outward; the metal ear tube should be tilted forward and put the ear tube into your external ear canal so that the sinus and your ear canal are tightly closed; the size of each person’s ear canal It's not the same, you can choose an ear sinus of the right size. If the wearing method is correct, but the tightness of the ear sinus and the ear canal is not good, and the auscultation effect is not good, please pull the ear tube out to adjust its elasticity. Improper wearing method will cause poor auscultation results when the ear sinuses and ear canals are not close together. For example, when the ear tube is worn upside down, it will be completely inaudible.
