Stethoscope, 27", Brass Finish Chestpiece, Black Tubing (2175)A patented tunable diaphragm and superb craftsmanship offer the ultimate performance in a superior single sided stethoscope meets the exacting standards of health care professionals who demand the highest acoustic response. Features patented Littmann Snap Tight soft sealing eartips, patient friendly, nonchill rim and diaphragm and special procedures adapter. Seven year warranty, plus lifetime service and repair policy.