The Cardiology IV stethoscope offers better audibility of high-frequency sounds so that you can make decisions with confidence. The Cardiology IV is useful in critical care and challenging environments such as the ED, ICU, Cardiac ICU, step-down unit and other dynamic locations and can be used on adult and pediatric patients with a quick turn of the chestpiece. Tunable diaphragms on both the adult and pediatric sides of the chestpiece. Tunable diaphragm technologya 3M inventionlets clinicians hear different frequency sounds by simply adjusting the pressure on the chestpiece. Hold the chestpiece with light pressure to hear low frequency sounds; press a little more to hear higher frequency sounds. This time-saving feature allows the healthcare provider to focus on the patient, while the non-chill diaphragm and rim provide patient comfort. Single-piece diaphragm thats easy to attach and easy to clean because the surface is smooth without crevices. Pediatric side of the chestpiece converts to a traditional open bell by replacing the single-piece diaphragm with a non-chill rim. Dual-lumen tubing combines two sound paths in one tube, eliminating the rubbing noise of traditional double tubes.