Featuring a two-sided chest piece, the Littmann Classic II Paediatric S.E. Stethoscope offers high acoustic sensitivity for superior performance. These two-sided models with traditional bell/diaphragm chestpieces are designed, sized and acoustically precise for children and infants. The solid stainless steel chestpiece features a one-inch traditional bell (pediatric) or a 3/4 bell (infant) combined with a patented floating diaphragm.