The Littmann Master Cardiology stethoscope offers a handcrafted stainless steel chestpiece with the portable convenience of a single-sided stethoscope. The patented tunable diaphragm conveniently alternates between low and high frequency sounds with a simple pressure change on the chestpiece. Additionally the stethoscope comes with a special procedures adaptor for difficult site or pediatric auscultation. Benefits: Patented tunable diaphragm conveniently alternates between the low and high frequency sounds without the need to turn over the chestpiece. Handcrafted solid stainless steel chestpiece. Two-in-one tube design eliminates rubbing noise. Portable convenience of a single-sided chestpiece. Excellent acoustic seal and comfortable fit with patented 3M™ Littmann® Snap Tight soft-sealing eartips. Comfortably angled, anatomically correct headset. Patient-friendly, nonchill rim and diaphragm. Special procedures adaptor for difficult site or pediatric auscultation. Available in a selection of classic tube colors. Seven-year warranty.