The MDF 22k Gold Edition Sprague Rappaport Stethoscope is five stethoscopes in one for a full range of diagnostic applications and is traditionally trusted to detect faint heart sounds and murmurs. As the most versatile model on the market, this classic design allows healthcare professionals to assess adult, pediatric, and infant patients using just one stethoscope. An ergonomic design ensures comfort for the doctor and patient, even during extended use. Chestpiece: The handcrafted gold-plated zinc-alloy dual-head convertible chestpiece is precisely machined for high performance and durability. Full-rotation dual-output acoustic valve stem with green indicator dot allows the user to easily identify the active sound channel. Using the included accessory kit, the adult and pediatric diaphragm assemblies can be removed and replaced with adult, pediatric, and infant bells. Acoustic Tubing: Constructed of thicker, denser, latex-free extruded PVC, the dual non-stick acoustic tubing provides insulation for superior sound transmission and seals out ambient noise while preventing the cracking and wearing that can occur from repeated use. Dual high-performance acoustic tubes are secured in place by a non-pinching, non-obtrusive gold-plated brass acoustic tube clasp. AccuFit Headset: Adjustable headset constructed from gold-plated brass allows the user to create an individualized fit. Soft ComfortSeal eartips are clear for hygienic purposes and conform to the ear to seal out extraneous noise while ensuring comfort during extended use. Force-fit, non-threaded SafetyLock eartip adaptors lead the industry in user safety. Included Accessories: 2 extra sets ComfortSeal eartips, spare adult and pediatric clear PVC diaphragms, pediatric diaphragm assembly, pediatric bell, infant bell, and ID tag. Warranty and Service: Lifetime warranty (5 years on tubing); Free Replacement Parts for Life Program.