Black enamel 300mmHg manometer exceeds industry standard. Navy blue nylon cuff with range markings to facilitate selection of correct cuff size and gauge holder. Chrome-plated deflation valve.Threaded chestpiece drum of chrome plated zinc 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 on most patients. Double tube configuration, not made with natural rubber latex. Proprietary valve mechanism eliminates acoustic leakage. Adjustable aluminum binaurals. Convenient 22" tubing length in 31 model options. Complete with an accessory pouch containing the bell chestpieces, chestpiece key, 2 spare diaphragms, one pair of hard eartips and one pair of soft clear eartips. Weighs 7 oz. Overall length 30" 5 Year Warranty. Inspected and packaged in the U.S.A.