A precision stethoscope incorporating innovative design technology. Outstanding acoustics combined with a unique and easy-to-grasp chestpiece allow easy movement between auscultation sites. The Littmann Cardiology S.T.C. stethoscope's innovative design allows easy movement and handling by the healthcare provider while still providing outstanding acoustics. The tunable diaphragm allows the user to conveniently alternate between low- and high-frequency sounds by applying a simple pressure on the chestpiece. Benefits Attractive chestpiece is easy to grasp in multiple hand positions. Provides outstanding acoustics. Single-sided chestpiece provides both bell and diaphragm frequency responses. Dual-lumen design helps to reduce noise artifact. Excellent acoustic seal and comfortable fit with patented 3M Littmann - Snap Tight Soft-Sealing Eartips. Comfortably angled, anatomically correct headset. Patient-friendly, nonchill rim. Six-year warranty. Suggested Applications Used as a diagnostic aid as part of the physical assessment of a patient. Recommended for cardiology and high performance adult and pediatric use.