The 3M™ Littmann® Cardiology IV™ stethoscope represents the next generation of one of the most recognized medical stethoscopes, offering improved acoustic performance with better listening to high-frequency sounds (adult side, firm pressure). The distinctive bell of the Cardiology IV, in a chalice shape, features dual-frequency diaphragms on both sides, providing excellent acoustic performance, flexibility, and ease in diagnosing adult and pediatric patients. 

The pediatric side of the bell converts to a traditional bell by replacing the dual-frequency diaphragm with a non-chill rim, which is included with every Cardiology IV stethoscope.