Hear more with the new Littmann Cardiology IV Stethoscope. Catching subtle sounds is critical to accurate patient assessment and diagnosis. The new Cardiology IV stethoscope is engineered to help you perceive the barely perceptible — the sounds that can tell you more about a patient’s condition. Designed for clinicians who require superior quality and exceptional versatility, the Cardiology IV stethoscope’s updated design and improved acoustics give you the ability to hear more of what you need to hear.