Littman Classic III™ Stethoscope 27"A stethoscope with high acoustic sensitivity for performing general physical assessments. With a two sided chestpiece, dual tunable diaphragms, convertible open bell, improved tubing, and much more. FEATURES: Tunable diaphragms on both the adult and pediatric sides of the chestpiece. Pediatric side converts to an open bell. Single piece diaphragm. Open bell stays clear of dirt and debris by covering it with the small diaphragm. Next generation tubing.