Introducing the Littmann Classic III Stethoscope. Littmann Classics have set the high quality standards that clinicians expect and the Classic III features several key upgrades to enhance acoustic sensitivity and durability in a stethoscope. The improved tubing is designed to resist skin oils, alcohol, and staining for a longer life. A new dual diaphragm chestpiece allows for both adult and pediatric assessment. 3M’s new “tunable diaphragm” technology lets you easily listen to both low and high frequency sounds by switching from light to firm pressure on both sides of the chestpiece. Also featured are larger ear tubes that are comfortably positioned for enhanced sound transfer and of course the manufacturers warranty that comes with all Littmann stethoscopes.