PRODUCT DESCRIPTION Primacare DS-9290-BL adult size stethoscope is professional for medical emergencies and first aid purposes. This classic series adult dual-head stethoscope performs as good or even better than other expensive brands and models. It is Great for monitoring blood pressure and listening to heart, lung, and bowel sounds. Features adjustable chrome plated brass binaural, chrome plated dual-head chest piece and lightweight flexible single channel tubing for comfortable use over extended periods. One side for low-frequency sounds and the diaphragm on the other for higher frequency sounds. Twist the tube part of the head to select which side to use. This economical and high quality stethoscope is 100% guaranteed to get the bang from your buck. MANUFACTURER CONTACT INFORMATION 908-486-7050