Stethoscope features a patented tunable diaphragm on each side of chestpiece for adult, pediatric and small site auscultation. Conveniently alternate between low-frequency and high-frequency sounds without need to turn over chestpiece. Solid stainless steel chestpiece provides outstanding acoustic performance. Headset is comfortably angled and anatomically correct. Stethoscope has an excellent acoustic seal and comfortable fit with patented 3M Littmann Snap-tight, soft-sealing eartips as well as a patient-friendly, nonchill rim and diaphragm. Recommended as diagnostic aid and for cardiology and high-performance adult and pediatric use.