The 3M™ Littmann Classic II S.E. is the 'industry standard' stethoscope. Featuring a two-sided chestpiece, this classic stethoscope offers high acoustic sensitivity for superior performance. The sthetoscope offers a tradional bell combined with a tunable diagraph that allows the user to conveniently alternate between low- and high-frequency sounds without turning over the chestpiece. Ideal for daily use by: • General Practitioners • Nurses • Medical Students