Latex free Littmann Classic II SE Stethoscope. The tunable diaphragm detects both high and low frequencies by alternating pressure on the diaphragm.It features a two sided stainless steel chest piece with snap tight soft sealing ear tips and free extra firm ear tips. Acoustical rating of 7 out of 10. Comes with three year warranty Featuring a two-sided chestpiece, this classic stethoscope offers high acoustic sensitivity for superior performance. A tunable diaphragm on one side augments the traditional bell function of the opposite side. The Littmann Classic II S.E. stethoscope offers a traditional bell combined with a tunable diaphragm that allows the user to conveniently alternate between low- and high-frequency sounds without turning over the chestpiece. Benefits Traditional bell combined with a tunable diaphragm that allows the user to conveniently alternate between low- and high-frequency sounds without turning over the chestpiece. Excellent acoustic seal and comfortable fit with patented 3M Littmann - Snap Tight Soft-Sealing Eartips. Comfortably angled, anatomically correct headset. Patient-friendly, nonchill rim and diaphragm. Single-lumen tubing is available in a variety of popular colors. Three-year warranty. Suggested Applications Used as a diagnostic aid as part of the physical assessment of a patient.