Description Featuring a two-sided chestpiece, the Littmann™ Classic II S.E. offers high acoustic sensitivity for superior performance. The Littmann Classic II S.E. Stethoscope features a patented tunable diaphragm on one side, augmenting the traditional bell function of the opposite side. The patented tunable diaphragm alternates between bell and diaphragm modes with a simple pressure change on the chestpiece. Also features: single-lumen tubing, paten