The 3M Littmann Master Cardiology Stethoscope is characterized by exceptional craftsmanship by its handcrafted stainless steel chestpiece and the best acoustic response in the Littmann Cardiology line. The innovative engineering of its tunable diaphragm delivers versatile performance for medical professionals to identify, listen to, and study heart, lung, and other body sounds. 3M Littmann tunable diaphragm technology delivers significantly enhanced listening capability over conventional acoustic stethoscopes. Switching between bell and diaphragm modes is as easy as a simple pressure change on the chestpiece so there is no need to remove, index and replace for same-site auscultation. This time-saving feature allows the healthcare provider to focus on the patient. Resilient tubing folds tightly for pocket portability and retains its shape while patented Snap Tight Soft-Sealing Eartips help form an effective acoustic seal. The anatomically correct headset is angled to channel sound and enhance listening comfort while the nonchill rim and diaphragm provide patient comfort. The Master Cardiology Stethoscope is made in the USA; product and package are latex-free and come complete with small and large eartips, Special Procedures Adapter, and instructions.