ADC’s legendary Sprague with a lightweight single tube design for greater comfort and convenience.

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The 647 features:
•Threaded chestpiece drum permits the use of five interchangeable chestpiece fittings - an adult and pediatric diaphragm, and three bells (11/4", 1", 3/4") - for complete diagnostic capability in most patients
•Latex-free extra thick “Y” tubing
•Proprietary valve mechanism eliminates acoustic leakage
•Adjustable chrome-plated brass 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
•Inspected and packaged in the U.S.A.