The Sprague stethoscope has a chestpiece drum with 5 interchangeable fittings. Adult and pediatric diaphragm, and 3 bell chestpieces. Suitable for use in virtually any clinical setting. Patented valve mechanism virtually eliminates acoustic leakage. Chestpiece key facilitates diaphragm replacement. Gasket sealed system. Double tube configuration improves stereo separation. Adjustable chrome plated brass binaurals. Accessory pouch contains the 3 bell chestpieces, chestpiece key, spare adult and pediatric diaphragm and two extra pairs of eartips. Five year warranty. Latex-free.