High performance and outstanding acoustics are the hallmark of the Clinical I stethoscope from Prestige Medial. The chestpiece and binaurals are made of stainless steel the most effective sound conducting metal available. The extra thick-walled tubing with an inside alloy sound conductor assures crisp sound. It includes two sizes of eartips which seal out extraneous noise while providing superior comfort. An easy to use snap-on rim and diaphragm help to make the Clinical I an outstanding performer. An extra diaphragm is included. Lifetime Limited Warranty. High performance dual head stethoscope Stainless steel chestpiece and binaurals Extra-thick walled tubing with an inside alloy sound conductor Includes two sizes of eartips Snap-on rim and diaphragm Extra diaphragm included Lifetime limited warranty with lifetime replacement parts Overall length is approximately 31" Weight is approximately 5.8 ounces