3M Littmann Lightweight II S.E. Stethoscope, Burgundy Tube, 28 inch, 2451 Provides reliable acoustic performance for taking blood pressure readings and making limited physical assessments of adult patients Tunable diaphragm responds with a simple pressure change to capture low and high-frequency sounds Tear-drop shape for easy fit under blood pressure cuff Anatomically designed headset is angled to meet the path of the ear canal Nonchill rim and diaphragm provide welcome patient comfort