Featuring a two-sided chestpiece, the 3M Gray 28" Littmann Classic II SE Stethoscope offers high acoustic sensitivity. A tunable diaphragm on one side augments the traditional bell function of the opposite side. Features: Traditional bell combined with tunable diaphragm technology that allows you 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 in a variety of popular colors. Gray in Color, 28" long. Latex Free. Three-year warranty.