Versatile adult and pediatric 2 Sided chest pieceDual single-piece tunable diaphragmsSmall side diaphragm prevents debris in open bellRappaport Stethoscope is designed to detect the entire range of heart and chest sounds.It is five stethoscopes in one for a full range of diagnostic capability that is clinically proven to deliver more faint heart sounds and murmurs than other stethoscopes.