The 3M™ Littmann® Classic III™ Stethoscope is the latest version of the stethoscope that helps millions of medical professionals achieve their best.The Classic III stethoscope offers high acoustic sensitivity for exceptional performance, plus a versatile two-sided chestpiece with tunable diaphragms. The Classic III stethoscope is used by students and medical professionals alike to identify, listen to, and study heart, lung, and other body sounds for physical assessment, patient monitoring, and diagnosis.