3M Littmann Classic III Stethoscope 5803 All Black | 3M Add onn:Without Engraving Special valve design ensures the

Special valve design ensures the mucus or air would not be sucked back into the nose

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3M Littmann Classic III Stethoscope 5803 All Black | 3M Add onn:Without Engraving Special valve design ensures theThe 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