The cardiology iv stethoscope single-piece tunable diaphragm allows better audibility of high frequency sounds. Tunable diaphragms on both the adult and pediatric sides of the chest piece. Single-piece diaphragm that’s easy to attach and easy to clean because the surface is smooth and without crevices. Open bell versatility allows the pediatric side to convert to a traditional open bell by replacing the single-piece diaphragm with a non-chill sleeve. Next-generation tubing with improved resistance to skin oils and alcohol for longer tubing life, less likely to pick up stains.