Threaded chestpiece drum permits the use of five interchangeable chestpiece fittings – an adult and pediatric diaphragm, and three bells (1 1/4″, 1″, 3/4″) – for complete diagnostic capability in most patients. All metal parts finished in black chrome for a striking appearance. Latex-free double tube configuration. Proprietary valve mechanism eliminates acoustic leakage. Adjustable binaurals. Complete with an accessory pouch containing the bell chestpieces, chestpiece key, 2 spare diaphragms, one pair of mushroom eartips, and one pair of silicon eartips. Weighs 7 oz, measures 30″. Inspected and packaged in the U.S.A.