Introducing the brand new Cardiology IV stethoscope from 3M Littmann. The Cardiology IV stethoscope encompasses a redesign from the ground up featuring a brand new stainless steel chestpiece, brand new fully optimized pediatric and adult diaphragms unique to the Cardiology IV, the very latest generation long life tubing, a highly tuned bell side for instant low frequencies, and class leading 7 year warranty. This is the upgrade you have been waiting for.