Professional Two Sided Cardiology Stethoscope Black, New in Box Adult and pediatric-sided chestpiece, each is with a diaphragm what allows to use both sides of the stethoscope for listening both high- and low-frequency sounds. The large side can be used for auscultating adult patients, the small side is useful for pediatric or thin patients. Patient-friendly, chestpiece comes with non-chill ring. It has the excellent acoustics with clear low-frequency responses. Soft ear - tips are with inner spring binaural tubing assembly. Special design of bin aural for suiting the ear structure Additional spare membrane and different size ear tips. Attention! Make sure to not put the Stethoscope on backwards!