The sounds you barely hear are often the most important. 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.Hear more with the new Littmann Cardiology IV Stethoscope. 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.The Cardiology IV stethoscope’s advanced features help you achieve more. Better audibility of high-frequency sounds* helps you learn more about your patient’s condition. Single-piece tunable diaphragms let you hear high and low frequency sounds on both the adult and pediatric sides of the chestpiece. Pediatric side converts to an open bell. Just remove the single-piece diaphragm and replace it with a non-chill rim. Open bell stays clear of dirt and debris by covering it with the small diaphragm. Dual-lumen tubing combines two sound paths in one tube, eliminating the rubbing noise of traditional double tubes. Not made with natural rubber latex or phthalate plasticizers, next-generation tubing lasts longer with improved resistance to skin oils and alcohol and is less likely to pick up stains. *Adult side, firm pressure. Compared to the 3M Littmann Cardiology III Stethoscope.